Kotlin is a popular and powerful open-source programming language. It is the official language of Android development, allowing developers to create sophisticated, innovative apps. Kotlin simplifies and speeds up development, allowing ambitious projects to be implemented faster, with fewer lines of code. This makes it an attractive option for clients looking to build a highly functional app or website quickly and efficiently.

Kotlin Developers bring valuable experience and expertise to any project they take on, allowing clients to get the most out of their investment. They are experienced in app architecture and development, making sure that client’s apps function exactly as desired. They also have excellent problem-solving skills, ensuring any issue is quickly resolved. In addition, their understanding of the Kotlin language makes working with this powerful tool more efficient and effective for clients.

Here's some projects that our expert Kotlin Developer made real:

  • Intuitive payment integration platforms
  • Secure authentication systems
  • Multi-platform app development
  • Streamlined in-app purchase functions
  • API issue resolution processes
  • Customized Login activities to connect with databases
  • Bug fixes for mobile apps on all platforms
  • Detailed user profiles optimized for functionality
  • Updated Android apps up to latest Google specs
  • End-to-end VPN app solutions for iOS, Android, Windows and Macs

At Freelancer.com we want our clients to know that their projects will be handled expertly by professionals with extensive experience in building with the Kotlin language. We can provide you with an experienced Kotlin Developer who can make your ambitious projects a reality in record time. Together you can bring your plans to life quickly and efficiently, allowing you to reap the rewards of our collaboration as soon as possible. If you're interested in taking advantage of our expertise in the field of Kotlin development then please do not hesitate to post your project today so that one of our professionals can help bring your plans to life!

A partir das avaliações de 52,754, os clientes avaliam nosso Kotlin Developers 4.9 de 5 estrelas.
Contratar Kotlin Developers

Kotlin is a popular and powerful open-source programming language. It is the official language of Android development, allowing developers to create sophisticated, innovative apps. Kotlin simplifies and speeds up development, allowing ambitious projects to be implemented faster, with fewer lines of code. This makes it an attractive option for clients looking to build a highly functional app or website quickly and efficiently.

Kotlin Developers bring valuable experience and expertise to any project they take on, allowing clients to get the most out of their investment. They are experienced in app architecture and development, making sure that client’s apps function exactly as desired. They also have excellent problem-solving skills, ensuring any issue is quickly resolved. In addition, their understanding of the Kotlin language makes working with this powerful tool more efficient and effective for clients.

Here's some projects that our expert Kotlin Developer made real:

  • Intuitive payment integration platforms
  • Secure authentication systems
  • Multi-platform app development
  • Streamlined in-app purchase functions
  • API issue resolution processes
  • Customized Login activities to connect with databases
  • Bug fixes for mobile apps on all platforms
  • Detailed user profiles optimized for functionality
  • Updated Android apps up to latest Google specs
  • End-to-end VPN app solutions for iOS, Android, Windows and Macs

At Freelancer.com we want our clients to know that their projects will be handled expertly by professionals with extensive experience in building with the Kotlin language. We can provide you with an experienced Kotlin Developer who can make your ambitious projects a reality in record time. Together you can bring your plans to life quickly and efficiently, allowing you to reap the rewards of our collaboration as soon as possible. If you're interested in taking advantage of our expertise in the field of Kotlin development then please do not hesitate to post your project today so that one of our professionals can help bring your plans to life!

A partir das avaliações de 52,754, os clientes avaliam nosso Kotlin Developers 4.9 de 5 estrelas.
Contratar Kotlin Developers

Filtro

Minhas pesquisas recentes
Filtrar por:
Orçamento
para
para
para
Tipo
Habilidades
Idiomas
    Estado do Trabalho
    75 trabalhos encontrados

    Android App UI Replica (Jetpack Compose) General Information I have an existing Android application only as an APK file. There is no Android Studio source code — only a decoded version via apktool (res, drawable, xml, png, smali). The app is written using Jetpack Compose, so this task is NOT reverse engineering. The goal is to recreate the UI visually 1:1. I will provide: - APK file - decoded resources - screenshots of all screens The final result must be a clean new Android Studio project. Application Concept Type: Personal account / dashboard application 1. Splash Screen - Shows a welcome image - Duration: ~2-3 second - Automatically navigates to PIN screen 2. PIN Code Screen - 4 circles at the top - Numeric keypad (0–9) - Tap animation similar to original - Hardcode...

    $257 Average bid
    $257 Média
    66 ofertas

    I want to commission a full-featured Android application dedicated to organising eSport scrimmages and small-scale tournaments. My budget for the entire build is approximately US $1,000, which I will release in clearly defined milestones (prototype, beta, final release, and demo video). Core scope The app has to let players create and manage teams, schedule matches effortlessly, and keep ongoing statistics so organisers can review past performances. Because most users will expect a quick sign-up flow, social-media login options (Google, Facebook, Twitter) need to be baked in from the start. I also need a lightweight in-app payment gateway so teams can pay entry fees or unlock premium brackets without leaving the platform. Deliverables • Production-ready Android APK and source co...

    $4289 Average bid
    $4289 Média
    38 ofertas

    Saya sedang menyiapkan sebuah aplikasi sosial media khusus Android dan ingin bekerja sama dengan satu pengembang yang bisa mengeksekusi proyek ini dari awal hingga siap diluncurkan. Tujuan Aplikasi ini akan menjadi ruang interaksi pengguna—mirip layaknya platform sosial pada umumnya—di mana mereka dapat membuat profil, berbagi postingan, berkomentar, serta menerima notifikasi aktivitas terbaru. Ruang lingkup utama • Desain antarmuka (UI/UX) sederhana, intuitif, dan responsif untuk perangkat Android terkini. • Fitur inti: pembuatan akun, login/registrasi aman, feed posting, sistem like & komentar, serta push notification. • Integrasi backend (bisa Firebase atau solusi sejenis) untuk autentikasi dan penyimpanan data real-time. • Dashboard admin rin...

    $7 / hr Average bid
    $7 / hr Média
    3 ofertas

    Saya membutuhkan sebuah aplikasi Android sederhana yang memungkinkan pengguna menonton drama Korea melalui streaming video. Fokus utama saya adalah: • Pemutar video streaming yang stabil dan mendukung kualitas adaptif. • Antarmuka bersih—daftar judul, halaman detail, dan tombol putar. • Backend ringan atau integrasi API agar saya bisa menambah/ubah tautan video sendiri. Silakan gunakan bahasa pemrograman, framework, atau player library Android yang Anda rasa paling efisien (misalnya Kotlin + ExoPlayer), asalkan performa streaming lancar dan kode mudah dipelihara. Kirimkan: 1. APK uji coba. 2. Kode sumber lengkap dengan petunjuk build. 3. Panduan singkat cara saya memperbarui katalog drama. Fitur lain seperti unduhan episode atau pemberitahuan bisa d...

    $495 Average bid
    $495 Média
    16 ofertas

    I want to turn my idea into an Android-based game that genuinely entertains players and, at the same time, brings in consistent income. The goal is a polished, lightweight game that runs smoothly on most devices and is fully set up for revenue through AdMob, rewarded video, or other proven in-app purchase models. You’ll take the lead on coding, design integration, and the entire Play Store release process. I’m open to the engine or framework you’re most comfortable with—Android Studio with Kotlin/Java or a cross-platform tool like Unity, as long as the final build is stable and easy to maintain. Deliverables: • Play-ready APK/AAB and all project source files • Monetization features integrated, tested, and demonstrably working • Brief documentat...

    $490 Average bid
    $490 Média
    22 ofertas

    Project Title: High-End Full-Scale Clone of AirDroid Parental Control (iOS & Android) ​Project Description: PRO-DEVELOPER: I am commissioning a premium, cross-platform clone of AirDroid Parental Control. The goal is to achieve 1:1 functionality with high stability and military-grade security. ​Core Real-Time Features (High Priority): ​Remote Monitoring: Silky-smooth, low-latency streaming via WebRTC (Real-time front/back camera access and Live Screen Sharing). ​Ambient Audio: One-way high-quality audio pickup from the child's surroundings. ​Remote Control & Management: Remote screen casting with the ability to manage device settings. ​Essential Management Features (The "Full Clone" Details): ​App Blocker & Schedules: Ability to block specific apps (Social media, ...

    $14211 Average bid
    $14211 Média
    94 ofertas

    We need an Android developer to add iPhone-style panorama to the Open Camera app (open source: ). Goal: Implement panorama in Open Camera so it works like iPhone: guided on-screen motion, smooth horizontal panning, and one stitched panorama image. • Works seamlessly on both the front and back cameras. • Guides the user with the same arrow-line UI Apple uses, keeping motion smooth and level. • Captures a continuous series of frames, stitches them on-device, and outputs one high-quality image without pushing memory limits. You’ll work only against the official Open Camera codebase (or a clean fork you create). I’ll take your branch and merge it into our own app later.

    $151 Average bid
    $151 Média
    22 ofertas

    We are looking for a full-time Android developer to work remotely on an active commercial application that includes live streaming, video content, stores, payment systems, and delivery company integrations via API. Working Hours & Commitment: • 10 hours daily (remote). • Continuous screen sharing during working hours. • Pre-agreed break times are allowed. • Any interruption outside agreed breaks will be considered a breach. Main Responsibilities: • Fix existing bugs. • Develop and add new features. • Improve the menu system. • Enhance the live streaming system. • Improve code quality and structure. • Strengthen security and stability. • Optimize performance. • Adjust UI colors and layouts. • Align Android e...

    $15 / hr Average bid
    $15 / hr Média
    74 ofertas

    I want to replicate the smooth, quick-credit experience that apps such as KreditBee and Money View deliver, but with my own branding and flow. The build is strictly for Android and must be submitted to – and accepted by – Google Play, so every screen, permission request, and data-handling practice has to comply with the latest Play Store lending and personal-loan policies. Core flow • Registration → basic details • KYC verification – Aadhaar/PAN capture, selfie match, secure API hand-off to a third-party service of your choice • Loan application and approval dashboard • Before loan disbursement, the app must harvest and store the user’s full contact list (names, phone numbers, email where available) after an explicit consent prompt ...

    $1184 Average bid
    $1184 Média
    25 ofertas

    Title: Senior Android Developer: Hybrid Computer Vision Pipeline (Local ML + Gemini API) Project Description: We are seeking a Senior Android Engineer to develop a modular, high-performance infrastructure for real-time video capture and analysis. The core of the project is a "Hybrid AI Routing Engine" that intelligently switches between on-device local processing and high-depth cloud analysis. This application is an R&D prototype that must be Play Store Ready, with a heavy focus on background stability, thermal management, and seamless connectivity transitions. Technical Specifications: 1. Camera Pipeline & Intelligent Routing: Implement CameraX to ensure maximum compatibility across various Android OEMs (Samsung, Pixel, Xiaomi, etc.). Develop a Routing Engine to in...

    $378 Average bid
    $378 Média
    80 ofertas

    Saya ingin membangun sebuah aplikasi Android berfokus pada manajemen tugas. Intinya, pengguna harus dapat: • Menambah, mengedit, dan menghapus tugas • Mengelompokkan tugas berdasarkan kategori atau prioritas • Menerima pengingat (push notification) untuk tenggat waktu • Melihat statistik penyelesaian tugas dalam tampilan ringkas Desain antarmuka cukup sederhana dan intuitif; Material Design sudah memadai. Backend boleh lokal (SQLite/Room) atau memakai solusi ringan berbasis cloud—silakan rekomendasikan pendekatan terbaik. Harap sertakan: • Rencana arsitektur singkat (struktur folder, pattern seperti MVVM jika digunakan) • Daftar dependensi utama (Jetpack, Retrofit, dsb.) • Estimasi waktu pengerjaan per fase (UI, logika inti, testing) ...

    $5 / hr Average bid
    $5 / hr Média
    5 ofertas

    The goal is to build a lightweight Android utility focused on task management. Core capability centres on notifications and reminders—covering everyday to-dos as well as specialised payment nudges and simple order-processing follow-ups—delivered reliably on Android 8.0+ devices. Scope of work • Create the full Android application in Kotlin (Java is acceptable if strongly preferred) with Android Studio. • Design clean Material-compliant screens for adding, editing and browsing tasks. • Persist data locally with Room; structure the code so a future cloud sync (e.g. Firebase) can slot in without major refactoring. • Implement a reminder engine that schedules push notifications, survives device reboots and handles recurring events such as monthly paymen...

    $96 Average bid
    $96 Média
    19 ofertas

    Saya ingin mewujudkan sebuah aplikasi hiburan khusus Android. Aplikasi ini harus: • Menyajikan konten hiburan yang ringan dan menarik (video pendek, audio, kuis, atau format serupa—saya terbuka didiskusikan). • Memiliki antarmuka sederhana, responsif, dan mudah dipahami pengguna. • Berjalan lancar di beragam ukuran layar Android terbaru. • Siap diintegrasikan dengan sistem iklan (AdMob atau solusi setara) untuk monetisasi dasar. • Disertai file APK, kode sumber lengkap, serta petunjuk build sehingga saya dapat melakukan update sendiri di kemudian hari. Saya akan memberikan panduan konten, struktur dasar halaman, serta aset grafis yang diperlukan. Mohon sertakan portofolio proyek Android serupa, perkiraan durasi pengerjaan, dan teknologi atau framewo...

    $11 / hr Average bid
    $11 / hr Média
    8 ofertas

    I’m ready to have a brand-new feature built from scratch for my mobile application, and the entire codebase needs to be written in pure Java. Performance, clean architecture, and clear inline documentation are non-negotiable because this module will slot straight into an existing codebase that already follows solid, maintainable practices. Here’s what I need from you: • A concise outline of your technical approach—how you’ll structure the code, the patterns or libraries you prefer, and the way you’ll keep the footprint lightweight on a mobile device. • A short overview of your relevant Java mobile experience, especially any instances where you created a feature end-to-end rather than extending existing code. • Your best estimate of the cale...

    $110 Average bid
    $110 Média
    18 ofertas

    I need the Android proctoring SDK I already built in Kotlin ported to iOS using pure Swift so it can be dropped into any React Native-based LMS or quiz app. Core purpose The SDK must deliver full-featured exam proctoring: it authenticates the test-taker (biometric login), records periodic face snapshots and screen images, and monitors audio, screen activity, and user presence to flag anyone who leaves the exam environment. Scope of work You will mirror every capability of the existing Android library; I will share the full Kotlin source and its React Native bridge as a reference. The iOS package must expose the same React Native interface so current JavaScript calls remain unchanged. Key feature set • Biometric user authentication via Face ID / Touch ID • Periodic fron...

    $366 Average bid
    ADC
    $366 Média
    4 ofertas

    I need a complete Android and iOS matrimony application tailored for the Indian market. The build must centre on four core modules: • Rich user profiles and advanced search – each member should enter detailed personal information and upload both photos and videos so they can be found through intuitive filters. • Real-time communication – text messaging must work instantly, and in-app voice calls should connect members securely without sharing phone numbers. • Matchmaking and recommendations – an algorithm that suggests compatible profiles based on user-supplied criteria. • Free horoscope matchmaking – a built-in tool that automatically compares two users’ horoscopes, displaying clear compatibility results at no extra cost. I expect...

    $422 Average bid
    $422 Média
    19 ofertas

    I’m ready to turn my SaaS concept into a lean, test-ready MVP focused exclusively on mobile. The build should cover the absolute essentials only—enough for early adopters to sign in, experience the core service and give actionable feedback. Scope • Mobile-first: iOS and Android released through TestFlight / Google Play internal testing or a comparable beta channel. • Cloud-hosted backend and database set up for easy scaling and analytics plug-ins later on. • Clean, modular codebase so I can iteratively add dashboards, user management or other features after validation. Acceptance criteria 1. A fully functional mobile app compiled and installable on both platforms. 2. Basic navigation, secure sign-in and the core workflow of the SaaS idea working e...

    $123 Average bid
    $123 Média
    39 ofertas

    A responsive frontend web application built for a photography business to showcase services, portfolios, and client information. The platform focuses on clean UI design, smooth navigation, and optimized performance. It is deployed on cloud infrastructure and structured for scalability and future backend integration. Link:

    $52 Average bid
    $52 Média
    10 ofertas

    I want a cross-platform mobile app that serves fresh, uplifting affirmations every day on both iPhone and Android. The content will span three key themes—positive, health, and motivational messages—so users can decide which tone suits them each morning. Core features need to feel effortless: a gentle daily notification, a simple way for people to track what they’ve read or favorited, and a settings area where they can truly make the experience their own. Customization is central to the concept. Users must be able to pick from our preset categories, type in personal affirmations, and switch backgrounds or color themes to match their mood. Because the idea hinges on habit-building, efficient local storage and a lightweight cloud backup for favorites or streak data will be...

    $648 Average bid
    $648 Média
    199 ofertas

    I’m building a dedicated Android application for my eyewear chain and I need a developer who can take it from concept to a polished, Play-Store–ready release. The app must recognise that we operate several branches. Each location needs its own working hours, contact details, Google Maps pin, and real-time stock availability. When a customer opens the app, they can immediately see which branch is open, what products are in stock there, and book their appointment accordingly. Our product catalog is the heart of the experience. Frames, lenses, sunglasses and contact lenses should be displayed with photos, prices and “available in store” status. Shoppers must be able to filter by type, price range and availability, not just keyword search. Speed here is critical&mdash...

    $1229 Average bid
    $1229 Média
    51 ofertas

    I want to bring a dedicated Android e-commerce application from concept to Google Play. The core of the build is straightforward: customers must be able to browse products, add items to a cart, and check out smoothly—but the standout requirement is a robust push-notification system that keeps shoppers updated on promotions, order status, and cart reminders in real time. My priority stack is Kotlin with Android Studio, though I am open to proven cross-compatible libraries where it makes sense. Payment processing, user profiles, and basic analytics are already budgeted for the next phase, so please set up the project architecture with future modules in mind. Deliverables: • Production-ready APK plus signed AAB for store release • Complete, well-commented source code in a ...

    $210 Average bid
    $210 Média
    36 ofertas

    I’m ready to launch an e-commerce experience on Android and need a complete application built from the ground up. The core idea is simple: shoppers must be able to browse a catalog, add items to a cart, pay securely, and track their orders—all within a clean, responsive interface that feels fully native to Android. You’ll focus on coding and UX while I supply the product data, brand colors, and any graphics you need. Material Design principles are a must so the layout adapts gracefully across phones and tablets. Please integrate a widely-used Indonesian-friendly payment gateway such as Midtrans (or propose an alternative) and set up push notifications for order status updates. Deliverables • Production-ready APK plus full source (Kotlin or Java, latest Android SD...

    $35 / hr Average bid
    $35 / hr Média
    70 ofertas

    I’m ready to launch an e-commerce experience on Android and need a complete application built from the ground up. The core idea is simple: shoppers must be able to browse a catalog, add items to a cart, pay securely, and track their orders—all within a clean, responsive interface that feels fully native to Android. You’ll focus on coding and UX while I supply the product data, brand colors, and any graphics you need. Material Design principles are a must so the layout adapts gracefully across phones and tablets. Please integrate a widely-used Indonesian-friendly payment gateway such as Midtrans (or propose an alternative) and set up push notifications for order status updates. Deliverables • Production-ready APK plus full source (Kotlin or Java, latest Android SD...

    $34 / hr Average bid
    $34 / hr Média
    62 ofertas

    I’m ready to launch an e-commerce experience on Android and need a complete application built from the ground up. The core idea is simple: shoppers must be able to browse a catalog, add items to a cart, pay securely, and track their orders—all within a clean, responsive interface that feels fully native to Android. You’ll focus on coding and UX while I supply the product data, brand colors, and any graphics you need. Material Design principles are a must so the layout adapts gracefully across phones and tablets. Please integrate a widely-used Indonesian-friendly payment gateway such as Midtrans (or propose an alternative) and set up push notifications for order status updates. Deliverables • Production-ready APK plus full source (Kotlin or Java, latest Android SD...

    $35 / hr Average bid
    $35 / hr Média
    69 ofertas

    Saya ingin membangun sebuah aplikasi produktivitas khusus untuk perangkat Android. Fokus utama proyek ini adalah pengembangan aplikasi end-to-end, mulai dari rancangan antarmuka hingga fungsi inti yang membantu pengguna bekerja lebih efisien. Ruang lingkup pekerjaan: • Membuat wireframe sederhana berdasarkan kebutuhan dasar yang akan saya bagikan. • Mengembangkan aplikasi Android native (Java atau Kotlin) dengan struktur kode yang rapi dan mudah dipelihara. • Mengintegrasikan fitur produktivitas utama—misalnya pencatat tugas, pengingat, atau pelacak waktu—(saya terbuka pada masukan Anda untuk menentukan fitur mana yang paling relevan). • Menyediakan dokumentasi singkat tentang cara mengonfigurasi, membangun, dan menjalankan proyek. • Menyerah...

    $2 / hr Average bid
    $2 / hr Média
    3 ofertas

    Saya ingin membangun sebuah aplikasi produktivitas khusus untuk perangkat Android. Fokus utama proyek ini adalah pengembangan aplikasi end-to-end, mulai dari rancangan antarmuka hingga fungsi inti yang membantu pengguna bekerja lebih efisien. Ruang lingkup pekerjaan: • Membuat wireframe sederhana berdasarkan kebutuhan dasar yang akan saya bagikan. • Mengembangkan aplikasi Android native (Java atau Kotlin) dengan struktur kode yang rapi dan mudah dipelihara. • Mengintegrasikan fitur produktivitas utama—misalnya pencatat tugas, pengingat, atau pelacak waktu—(saya terbuka pada masukan Anda untuk menentukan fitur mana yang paling relevan). • Menyediakan dokumentasi singkat tentang cara mengonfigurasi, membangun, dan menjalankan proyek. • Menyerah...

    $3 / hr Average bid
    $3 / hr Média
    5 ofertas

    I need a lightweight Android application with three to five screens that primarily display information to the user. A simple login/signup form will gate access, after which the remaining screens should present static or lightly-dynamic content without any heavy backend logic. The look and feel must stay minimalistic and clean—think standard typography, ample white space, and subtle Material touches only where they help usability. Core scope • Splash → Login/Signup → 2–4 info screens navigated by toolbar or bottom-nav. • Smooth performance on the latest Android release (targetSdkVersion 34). • Written in Kotlin (Jetpack Compose or XML—your call) with clear, well-commented source code supplied at hand-off. • Read-me explaining build ...

    $584 Average bid
    $584 Média
    65 ofertas
    Logo kebahagiaan
    4 dias left

    Saya berencana meluncurkan sebuah aplikasi produktivitas khusus Android yang fokus pada fitur pengingat dan notifikasi. Tujuannya sederhana: membantu pengguna menjadwalkan serta mengingat tugas-tugas penting tanpa kerepotan. Lingkup pekerjaan: • Merancang dan mengembangkan aplikasi Android native (Java atau Kotlin). • Membuat modul pengingat yang memungkinkan pengguna menetapkan jadwal harian, mingguan, atau kustom. • Mengimplementasikan notifikasi lokal yang dapat diulang, ditunda (snooze), dan dihapus dengan mudah. • Antarmuka bersih dan intuitif agar pengguna baru langsung paham alur penambahan maupun pengelolaan tugas. • Dokumentasi singkat tentang cara build, struktur kode, dan petunjuk rilis di Google Play. Kriteria keberhasilan: – Apl...

    $38 Average bid
    $38 Média
    5 ofertas

    Saya berencana meluncurkan sebuah aplikasi produktivitas khusus Android yang fokus pada fitur pengingat dan notifikasi. Tujuannya sederhana: membantu pengguna menjadwalkan serta mengingat tugas-tugas penting tanpa kerepotan. Lingkup pekerjaan: • Merancang dan mengembangkan aplikasi Android native (Java atau Kotlin). • Membuat modul pengingat yang memungkinkan pengguna menetapkan jadwal harian, mingguan, atau kustom. • Mengimplementasikan notifikasi lokal yang dapat diulang, ditunda (snooze), dan dihapus dengan mudah. • Antarmuka bersih dan intuitif agar pengguna baru langsung paham alur penambahan maupun pengelolaan tugas. • Dokumentasi singkat tentang cara build, struktur kode, dan petunjuk rilis di Google Play. Kriteria keberhasilan: – Apl...

    $614 Average bid
    $614 Média
    6 ofertas

    Saya ingin sebuah aplikasi media sosial khusus Android yang dibangun dari nol hingga siap rilis di Google Play. Fokusnya adalah pengalaman pengguna yang lancar, antarmuka modern, dan arsitektur backend yang mudah diskalakan. Fungsi inti yang saya butuhkan: • Pendaftaran & login (email, Google, atau Facebook) • Beranda/feeds real-time tempat pengguna dapat mem‐post teks, foto, atau video pendek • Fitur suka, komentar, dan follow/unfollow akun lain • Laman profil dengan foto, bio, dan daftar posting • Pencarian akun & tagar • Notifikasi push untuk interaksi penting • Panel admin web sederhana untuk moderasi konten dan pengguna Teknologi yang disarankan—namun terbuka jika Anda punya opsi lebih baik—antara lain Kotlin + Andro...

    $420 Average bid
    $420 Média
    5 ofertas

    I’m building a fully native mobile application that lets drivers book automotive services The core flow is simple: users create an account (email, phone, or social login),check real-time availability, reserve a time, then pay securely without ever leaving the app. Both iOS and Android need to feel identical in look and speed, so I’m expecting Swift/SwiftUI on the Apple side and Kotlin with Jetpack on Android, backed by a single REST or GraphQL API. South African gateway must handle payments, supporting saved cards and one-touch checkout via Credit Card (VISA) or selected electronic transfers as well as PayPal etc. Please show me past work that demonstrates: • native builds (no hybrid wrappers) • secure login implementation • a live payment gateway...

    $7 / hr Average bid
    $7 / hr Média
    64 ofertas

    I need a secure, lightweight VPN application built for both and Android. The interface can stay minimal; stability, speed, and protocol flexibility are the real priorities. Core capabilities I expect: • Kill switch that reliably blocks traffic if the tunnel drops • Split tunneling so the user can choose which apps bypass the VPN • Support for the following protocols or transport layers: ssh, ssl, udp, v2ray, and websocket • A menu of multiple server locations that I can expand later through simple JSON or similar remote config No in-app user-authentication flow is required; the build should assume pre-provisioned profiles or embedded credentials. Deliverables: 1. Clean, well-commented source code (/Kotlin or Java/) 2. Signed release builds ready for TestFli...

    $251 Average bid
    $251 Média
    48 ofertas

    I am building a utility-style Android application and need an experienced Kotlin developer to take it from concept to a stable, Play-ready release. The core of the job involves: • Designing clean, maintainable Kotlin code that follows Android best practices (MVVM, Jetpack components, coroutines). • Implementing a small feature set typical of tools apps—think background services, permission handling, and a concise, responsive UI built with XML or Jetpack Compose. • Integrating basic analytics and in-app settings so the user can customise the experience. • Connecting the app to a lightweight local data store (Room or DataStore) for persistence. • Packaging, signing, and preparing a release build that passes Google Play requirements. I will provide...

    $149 Average bid
    $149 Média
    21 ofertas

    I am building a mobile-first social networking app with one clear goal: dramatically improve user engagement across my social media ecosystem. The app will serve as the hub where followers connect, share content, and keep returning, amplifying everything I post on Instagram, TikTok, and future channels. Core functions need to feel instantly familiar—think intuitive onboarding, a dynamic content feed, frictionless chat, real-time notifications, and lightweight rewards or gamification that keep people scrolling and sharing. Seamless social log-in, push-notification opt-ins, and in-app analytics are essential so I can track retention and tweak campaigns in near-real time. Because engagement is the metric that matters, every screen should encourage interaction. I’m open on the te...

    $572 Average bid
    $572 Média
    76 ofertas

    When my Android app is minimized, any YouTube video inside the WebView pauses immediately. I need a clean, reliable way to keep playback running in the background the same way the regular Here’s the current state of things: • I’m loading the video inside an Android WebView. • I have already experimented with various WebView settings—JavaScript, media playback flags, setMediaPlaybackRequiresUserGesture =false, etc.—but nothing has stopped the pause on “home” or “recent-apps” actions. • No alternative implementations (custom players, exo-player wrappers, or different WebView engines) are in place, What I need from you: 1. A working code solution (Java or Kotlin) that lets the video continue playing when the user switch...

    $83 Average bid
    $83 Média
    16 ofertas

    I’m building an Android-only application and need a clean, secure login flow that relies on one-time passwords sent strictly by SMS. Users will enter their phone number, receive the code, and gain access after successful verification—no usernames or emails involved. You’ll be responsible for wiring up the full authentication cycle, choosing a reliable SMS gateway, and writing the Android code (Kotlin or Java—your call) that: • accepts the phone number, • triggers the SMS OTP dispatch, • validates the returned code with sensible expiry and limited retries, • handles resend logic, and • stores / refreshes session tokens once the user is verified. Deliverables must include the documented source code, any backend or cloud function n...

    $85 Average bid
    $85 Média
    46 ofertas

    Je dispose déjà d’une plateforme SaaS en PHP / MySQL ; l’objectif est maintenant de lui adjoindre une application mobile native Android et iOS entièrement en français. L’app devra communiquer avec mon back-end via API (REST / JSON) afin de récupérer et mettre à jour les données existantes. Fonctionnalités clés • Notifications push configurables depuis le SaaS • Mode hors ligne avec synchronisation automatique dès qu’une connexion est retrouvée • Prise de photo directe depuis l’application puis annotation libre (dessin, surlignage) avant envoi L’expérience utilisateur doit rester fluide et réactive, c’est mon critère num&ea...

    $668 Average bid
    $668 Média
    107 ofertas

    I’m ready to turn a solid concept into a polished Android application focused squarely on business and productivity for my customers. The end goal is a Play-Store–ready build that lets users handle three core jobs in one place: • Task management – create, assign, track, and get notified in real time • Invoicing & payments – generate invoices, accept card / wallet payments securely, and surface simple analytics • Lightweight CRM – store customer profiles, log interactions, and view a history that ties back to tasks and invoices A clean, modern UI is key because my audience is external customers, not internal staff. They need to open the app and immediately understand what to do next without training. Here’s how I picture the fl...

    $113 Average bid
    $113 Média
    28 ofertas

    We are seeking experienced iOS and Android developers to assist in completing and optimizing our iOS VPN application. The developer will need to synchronize all features and logic from the reference template (Android version) to the iOS version, address existing issues in the iOS app, and update and optimize backend code to ensure compatibility and performance with the iOS client. Pre-Development Requirements (Must Complete): To ensure development quality and feature consistency, all developers must complete the following steps before starting coding: Download and thoroughly experience the reference template: This is a crucial step to understand project requirements. Please download the reference template from Google Play and fully experience all features, including connection flow, sett...

    $360 Average bid
    $360 Média
    16 ofertas

    We are seeking experienced iOS and Android developers to assist in completing and optimizing our iOS VPN application. The developer will need to synchronize all features and logic from the reference template (Android version) to the iOS version, address existing issues in the iOS app, and update and optimize backend code to ensure compatibility and performance with the iOS client. Pre-Development Requirements (Must Complete): To ensure development quality and feature consistency, all developers must complete the following steps before starting coding: Download and thoroughly experience the reference template: This is a crucial step to understand project requirements. Please download the reference template from Google Play and fully experience all features, including connection flow, sett...

    $106 Average bid
    $106 Média
    11 ofertas

    We are seeking experienced iOS and Android developers to assist in completing and optimizing our iOS VPN application. The developer will need to synchronize all features and logic from the reference template (Android version) to the iOS version, address existing issues in the iOS app, and update and optimize backend code to ensure compatibility and performance with the iOS client. Pre-Development Requirements (Must Complete): To ensure development quality and feature consistency, all developers must complete the following steps before starting coding: Download and thoroughly experience the reference template: This is a crucial step to understand project requirements. Please download the reference template from Google Play and fully experience all features, including connection flow, sett...

    $1005 Average bid
    $1005 Média
    19 ofertas

    I’m ready to turn my idea into a fully-functional Android application and need a developer who can guide the process from concept to Google Play release. At this stage I have the core concept and a handful of rough sketches; what I need now is help refining the user flow, designing an intuitive interface, building the backend logic, and packaging everything into a clean, well-tested APK. You’ll be working exclusively for the Android platform, so familiarity with current SDK versions, Kotlin or Java, Android Studio, and the play-store submission process is essential. If you can also advise on best-practice architecture (MVVM, Clean Architecture, Jetpack components) and integrate common services such as Firebase or in-app billing, that’s a plus. Please let me know: ...

    $11 / hr Average bid
    $11 / hr Média
    17 ofertas

    I’m building CareSync, an AI-assisted medication manager that puts caregivers first. The goal is a seamless experience on both Android and the web where a single profile, stored in Firebase Firestore, keeps every prescription, reminder and adherence metric perfectly in sync. The stack is locked in: • Python Flask will expose a clean, versioned REST API. • Firebase Auth secures every call, and Firestore holds all structured data. • Android is written in Kotlin, following Jetpack best practices and a repository-pattern clean architecture. • A lightweight web dashboard (React, Flutter Web or another modern framework you’re comfortable with) should consume the same endpoints so information mirrors in real time. Core functionality I need you to deliver...

    $424 Average bid
    $424 Média
    40 ofertas

    I want to launch an Android-only mobile application whose core purpose is blogging so I can share lessons and insights from my online classes with students. The must-have capabilities for this first release are a smooth post-publishing workflow (text, images, short videos) and built-in shareability that lets readers pass any article straight to their social-media apps with a single tap. You are free to choose the tech stack—Kotlin, Flutter, React Native, or any modern Android-friendly framework—as long as the final APK is stable on current versions of Android and the codebase is clean and well-documented. A lightweight backend or Firebase setup for storing posts is fine; I simply need to create, edit, and delete articles from an admin side and have them display instantly for...

    $40 Average bid
    $40 Média
    20 ofertas

    Quiero una aplicación nativa para Android que permita al usuario escribir el título de la pelicula o el fragmento de la misma , para obtener un resumen breve y tambien detallado en texto de lo que el director de la pelicula quiere expresar en la pelicula de lo que se supone que quiere decir con el argumento su significado. Estructura de negocio En Español – Modo gratuito: el usuario podrá ver la letra y un significado muy resumido; la pantalla mostrará anuncios (banner o intersticial, según recomiendes) como única fuente de monetización. – Modo premium: acceso a la explicación completa, sin anuncios. El pago debe gestionarse únicamente a través de Vizun; u la opcion de pago con targeta de debito...

    $255 Average bid
    $255 Média
    44 ofertas

    Quiero una aplicación nativa para Android que permita al usuario escribir el título y la pelicula o el fragmento de la misma , obtener la letra completa del estidio de lo que quiere decir el argumento y leer su significado. Estructura de negocio – Modo gratuito: el usuario podrá ver la letra y un significado muy resumido; la pantalla mostrará anuncios (banner o intersticial, según recomiendes) como única fuente de monetización. – Modo premium: acceso a la explicación completa, sin anuncios. El pago debe gestionarse únicamente a través de Vizun; u la opcion de pago con targeta de debito o credito, necesito Stripe. Flujo deseado 1. Pantalla de búsqueda con autocompletado. 2. Resultados con le...

    $184 Average bid
    $184 Média
    20 ofertas

    I need a warm, intuitive Android-only mobile app that lets users enjoy seamless conversations with a “friendly chat partner.” The core of the build is real-time communication on three levels: • Text chat • Voice chat • Video chat Please code natively for Android (Java or Kotlin via Android Studio) so the experience feels fast and integrated. I’m happy to rely on proven back-end services such as Firebase for authentication and real-time text, and WebRTC or a comparable library for voice and video—feel free to suggest the stack you’re most comfortable with. Key goals – Clean, welcoming UI that encourages users to start chatting within seconds – Reliable connection handling to keep calls and messages stable on spotty netwo...

    $354 Average bid
    $354 Média
    42 ofertas

    I’m building a small showcase app for a school contest and need a polished Android solution that makes printed text friendlier for students with dyslexia. The flow is straightforward: the user opens the camera, points it at a page, and the app instantly recognises the words (OCR). As soon as the text is captured, each word is spoken aloud in sequence while that same word is highlighted on-screen in real time. The result should feel like a karaoke-style guide that lets the reader follow along word by word without losing their place. Must-have fundamentals • Android only — Kotlin or Java is fine, as long as it runs smoothly on common mid-range phones. • Real-time OCR (Google ML Kit, Tesseract, or any on-device library you prefer) with no dependency on an active int...

    $284 Average bid
    $284 Média
    53 ofertas

    Saya ingin membangun sebuah aplikasi jejaring sosial Android (APK) yang berfokus pada fitur perpesanan. Versi pertama hanya perlu mendukung pesan teks satu-lawan-satu—cukup stabil, ringan, dan aman. Ruang lingkup utama: • Autentikasi pengguna (email / nomor ponsel) • Profil dasar dengan foto dan status singkat • Daftar kontak/teman yang bisa dicari • Layar chat real-time dengan pengiriman, penerimaan, dan notifikasi pesan teks • Panel admin sederhana untuk moderasi konten dan laporan bug Teknologi yang saya pertimbangkan meliputi Kotlin atau Flutter untuk sisi client, serta Firebase atau backend ringan setara untuk realtime database dan push notification. Jika Anda memiliki stack lain yang lebih efisien, silakan ajukan. Kriteria penerimaan:...

    $22 / hr Average bid
    $22 / hr Média
    26 ofertas

    I need both the Android and iOS builds of my app brought up to the latest 6am Mart release so that all existing features continue working after the core upgrade. There is no redesign involved—the task is strictly functional. Primary areas to tackle • User authentication – the current login and token flow occasionally fails after the recent server-side updates. I need seamless sign-in on first try, consistent session persistence, and full parity between the two platforms. • Payment systems – Stripe and Razorpay SDKs must be bumped to their current stable versions and retested so every purchase, refund, and webhook callback runs without error on Android 13+ and iOS 17. • 6am Mart core update – integrate the official latest release, resolve any br...

    $124 Average bid
    $124 Média
    35 ofertas

    Artigos Recomendados Só para Você