Build Custom iOS & Android App

@Microlent

Hello, I understand that you are looking for a developer to create fully-functioning native iOS and Android apps based on a detailed specification you have prepared. My expertise lies in mobile app development, specifically in creating seamless and user-friendly experiences for both platforms. From your project description, I see that you require a modern and sleek interface that is not only visually appealing but also fast and professional. I am skilled in developing apps that prioritize user experience and design aesthetics, ensuring that the final product meets your expectations. In terms of technology preference, I am proficient in Swift, Kotlin, React Native, and Flutter, and I can adapt to your chosen platform to ensure optimal performance, maintainability, and native-look animations. I take pride in delivering high-quality work with clear documentation, allowing you to easily manage and update the project post-handoff. I am committed to providing guidance through the entire development process and ensuring that the final builds meet the necessary requirements for App Store and Google Play submissions. Feel free to review my portfolio here: https://www.freelancer.com/u/Microlent Let's discuss further details and kickstart this project promptly. Sincerely, Rajesh

@diektech

Hi, This is Elias from Miami. I checked your project description and understand you need an iOS and Android app built from your detailed specification, with secure authentication, a polished responsive UI, shared maintainable code, and production-ready TestFlight/Play Store builds. I’ve worked with cross-platform mobile applications, authentication, APIs, responsive UI, and app-store deployment workflows. I’d recommend Flutter for a single codebase with strong native performance, then structure the project cleanly around your specification, implement the wireframes, add secure email/password authentication, and prepare both platforms for testing and release. I have a few questions for clarification: Q1 – Is the backend/API already available, or should it be developed as part of this project? Q2 – Do your wireframes cover all required screens and user flows, or are some still to be defined? Q3 – Are Apple Developer and Google Play Console accounts already set up for the final submissions? Looking forward to hearing from you.

@shubhamshrimal7

Hello, Greetings Hope you are doing well. I am a Mobile Application developer with over 5 years of experience. I am confident in my ability and skills to develop high-quality Mobile apps and would like to work on your project. I will complete the work as per your requirements. I want to discuss more this project to prepare the final concept. So let’s discuss this in detail over chat then will make plans to start work on it. Waiting for your earliest reply. Thanks. Shubham

@Dreamappsolution

Hello, I’d be happy to turn your detailed specification and wireframes into polished, production-ready mobile applications for both iOS and Android, with a shared, well-structured codebase that is easy to maintain and extend. I’m a full-stack/mobile developer experienced in building modern, responsive applications with a strong focus on performance, clean architecture, security, and user experience. What I’ll Deliver iOS & Android applications developed from a single maintainable codebase Secure Email/Password authentication Sign-up, login, logout, password reset, and proper validation Secure handling of authentication credentials and user data Modern, clean UI based on your colour references and wireframes Responsive layouts for phones and tablets Smooth, native-feeling transitions and animations Well-organized and scalable application architecture API/backend integration as required by your specification Complete source code in your private Git repository Production-ready iOS and Android builds TestFlight build preparation Google Play internal testing build preparation Assistance with App Store and Google Play submission Clear setup, build, deployment, and maintenance documentation I’m ready to review your specification and wireframes and can start by identifying the key technical requirements, estimating the timeline, and defining a practical milestone structure. Thanks Prosanto

@sigbl

I personally reviewed your brief. The priority is delivering both iOS and Android simultaneously without creating two disconnected codebases or sacrificing native performance and polish. Our expert mobile development team can build the application around a maintainable cross-platform architecture using React Native or Flutter where appropriate, with secure email/password authentication, password recovery, responsive layouts and smooth native-style interactions. The implementation will follow your wireframes and colour references while keeping the UI clean across phones and tablets. We’ll provide the complete source code in your private repository, configured builds for TestFlight and Google Play internal testing, and support through the final store submission process. The handover will include clear setup and build documentation so your team can run, maintain and update the project locally. Development can be structured into milestones covering foundation/authentication, core functionality, UI integration, testing and release preparation. Regards, SI Global Solutions

@onkarkulkarni8

As the founder of a highly reputable and tenured software development firm, I bring a wealth of expertise to this project encompassing both iOS and Android apps. Our company's forte is in building scalable, secure, and high-performance applications using modern technologies - precisely the skills you need for this endeavor. With 10+ years of experience, our team is well-versed in multiple programming languages such as Swift, Kotlin, React Native, and Flutter, ensuring that your app will be technically sound, maintainable while boasting native animations and quick interface. We understand the importance of clear documentation and ensuring that you have complete control over your project post-completion. Hence, our deliverables are centered on this requirement: complete source code in a private repo along with compiled builds ready to be tested and submitted on TestFlight and Google Play Store. Moreover, we are not just focused on creating; we also offer ongoing support, maintenance & DevOps services to proactively address any present or future concerns or updates.

@c0909h1179

Shipping iOS and Android simultaneously from one codebase is exactly where Flutter or React Native pays off — and where a sloppy auth layer or janky animation ruins the "sleek" feel you're after. I've delivered 80+ apps since 2008 across Flutter, React Native, Swift and Kotlin, including App Store/Google Play submissions with TestFlight and internal track rollouts, plus secure auth and session pipelines on Node.js/Supabase backends. My approach: (1) review your spec, wireframes and colour references, then lock a milestone plan and tech choice; (2) build the design system and email/password auth with secure hashing and reset flows; (3) deliver feature screens in reviewable builds, ending with store submission support and README documentation so you can build locally. Is the backend already in place, or should authentication be built too?

@starttechno

I’d start by translating your colour references and wireframes into a shared React Native foundation, then build the email/password authentication and responsive phone/tablet navigation before refining native-feel animations. Authentication will use a secure backend flow for hashing and reset tokens rather than exposing credentials in the app, with platform-specific Swift/Kotlin modules only where they improve behaviour. Within 7 days, I’ll deliver the private-repo source, documented local setup, TestFlight-ready iOS build, Android internal-testing build, and submission guidance for both stores. I’ve also built SyncWave, a cross-platform TV casting and screen-mirroring app with a separate Android TV receiver, so I’m comfortable handling shared mobile logic alongside platform-specific behaviour. Are the colour references and wireframes ready to share at the start? Muhammad Saad

@asifalimzd

Hi there, Thank you for sharing the detailed specification. I can turn your scope into fully‑functioning native apps for both iOS and Android, released simultaneously from a single, well‑structured codebase. I’ll implement secure Email/Password authentication with hashing and reset flows, and deliver a modern, sleek interface that feels clean, fast, and professional across phones and tablets. With your colour references and wireframes, I’ll ensure the UI matches your vision. Deliverables will include complete source code in a private repo, compiled builds ready for TestFlight and internal Play Store testing, plus guidance through final App Store and Google Play submissions. I’ll also provide clear documentation so you can run, build, and update locally after hand‑off. Tech stack can be Swift/Kotlin, React Native, or Flutter — whichever best balances performance, maintainability, and native‑look animations. Could you please share: - Your preferred tech stack (or if you’d like me to recommend one)? - Expected timeline and milestone structure? - Any additional integrations or third‑party services beyond authentication? I’m ready to begin immediately and refine small details with you during development. Best regards, Asif Ali Zaman Budget and Duration: TBD

@gotucat

We will build a cross-platform mobile app for both iOS and Android using React Native, focusing on a modern, professional design and secure login features. The stack includes React Native, with attention to performance and native animations. Our previous work 'Car Service Appointment Booking System with Real-Time Notifications, Chat, Booking Tracking & Meta WhatsApp API' showcases our ability to deliver high-quality mobile solutions. The project will be completed in 14 days, with the first milestone covering initial setup, wireframes, and core authentication.

@OutsourceMan

Hi, CnEL India can build your iOS and Android apps from the provided specification using React Native, with a shared and maintainable codebase. Our methodology: * Review the complete specification, wireframes and design references. * Finalize user flows, screen structure and technical architecture. * Build the React Native application with reusable components for iOS and Android. * Implement secure email/password authentication, password hashing and reset flows. * Create a modern responsive interface for phones and tablets. * Match the provided colours, layouts and interaction requirements. * Implement the required business logic and API integrations from the specification. * Add validation, error handling and secure data management. * Optimize performance, navigation and native-like interactions. * Test core workflows across representative iOS and Android devices. * Prepare TestFlight and Google Play internal-testing builds. * Resolve build/release issues and support final store submission. * Deliver complete source code in a private repository with setup and build documentation. We would first review the specification and confirm the React Native architecture, then develop in milestones with regular builds, testing and final release preparation.

@AITSoft

Hi, I understand you need a complete iOS and Android app built from your specification, with both releases moving together from one clean codebase. I’ll review the handover ZIP, wireframes, colours, and full feature list first, then confirm the app structure and milestones before development starts. The app will include secure email/password access, reset flows, responsive phone and tablet screens, smooth native-feel animations, and careful testing on both platforms. I can use Swift where it gives the best iPhone experience and choose a suitable shared approach for Android, while keeping the source code clear and easy to maintain. You’ll receive the private repository, TestFlight and Play Store testing builds, setup notes, local build instructions, and practical help with both store submissions. I’ll keep progress visible through milestone builds so small details can be refined without turning the project into a mystery novel. Does the handover ZIP include the complete feature list, backend/API details, and any existing database or authentication service?

@efanntyo

Hi there, I’m excited about the opportunity to work with you on building a custom iOS and Android app. With a strong background in mobile app development, I specialize in creating seamless, high-performance applications across both platforms. Your project’s emphasis on a single, well-structured codebase aligns perfectly with my expertise in Swift/Kotlin, React Native, and Flutter, ensuring your app delivers a native experience on all devices. I understand the importance of a secure authentication process and will implement robust email/password sign-up and login flows, incorporating industry-standard hashing and reset options. The modern and sleek interface you're envisioning is something I’m passionate about, and I’m eager to translate your wireframes and color references into a professional and intuitive user experience. Your deliverables will be handled with precision, providing complete source code in a private repository, compiled builds for testing, and smooth guidance through the App Store and Google Play submission processes. I guarantee comprehensive documentation to enable you to manage and update the project locally post-completion. Let's discuss any questions you have about the spec, and outline a timeline and milestone structure that aligns with your vision. I’m ready to dive in and start bringing your app to life. Best Regards, Efanntyo

@kabirchy

Hi there, I’ve reviewed your description and am confident I can turn your detailed specification into fully-functioning native-quality apps for both iOS and Android. I have extensive experience building cross-platform apps using Flutter and React Native, and I also work with native Swift and Kotlin when your requirements call for platform-specific features. My approach starts with a careful walkthrough of your spec to ensure no detail is missed. I then break the work into clear code modules, implement pixel-perfect UI, and test thoroughly on both platforms. I’m happy to refine small details together as development progresses, keeping communication smooth and timelines clear. - Proven track record delivering polished, high-performance mobile apps from detailed specs. - Focus on clean, maintainable code that’s easy to extend or update later. - Immediate availability to start once we align on final scope. Let’s discuss your spec in detail and I’ll prepare a tailored plan for you. Best Regards, Khorshed Alam, RS Software

@shivmirthyusl

Hi, With almost 20 years of experience, IT Flex Solutions India has been focused on turning client's ideas into powerful digital solutions. As our portfolio suggests, we are highly adept in creating high-performance mobile applications for both Android and iOS platforms using the precise skills you seek. Our comprehensive understanding of iOS/Android systems, Swift/Kotlin languages, React Native, and Flutter frameworks aligns perfectly with the project at hand. At IT Flex Solutions India, we ensure the quality and longevity of your product with robust code and a serious commitment to maintaining native-look animations, performance optimizations, and excellent delivery. We understand the vital importance of secure authentication features like email/password sign-up/log-in flows and can design sleek yet professional interfaces to meet your needs exactly. Thanks, SBM

@mobiappsoftware

Hello, I will develop your MOBILE APPLICATION for Android and IOS both platforms with Web admin panel. I am Tulsiram. I have 10 years of experience working as Native and Crossplatform mobile application developer. I am understood your requirements. I am glad if we are working together. If you interested then let's connect. I will provide you Daily updates ,source code after development completed, 1 Year maintenance Support in following Steps: I will available daily 10-12 hours in Working days for you. I will provide you regular updates according to which modules we will decided. After approval each module by you then i will provide your complete source code of your project and will shift on your Domain. Thanks

@ciss26

Hello there, Hope you are doing well We can develop your custom iOS & Android application from the detailed specification and wireframes, with a clean architecture, modern UI, secure authentication, and production-ready builds for both stores. Recommended Tech Stack For a single maintainable codebase, we recommend: - Mobile App: Flutter + Dart - Architecture: Clean Architecture / MVVM - State Management: Riverpod / BLoC - Backend: Node.js / NestJS or integration with your existing API - Database: PostgreSQL / MySQL Core Scope - Email/password signup - Secure login/logout - Forgot/reset password - Session/token handling - Phone and tablet responsive layouts - Modern UI based on your colours/wireframes - Native-feeling transitions and animations - API/backend integration - Error/loading/empty states - Secure local storage - Production configuration - TestFlight build - Google Play internal testing build

@bcosley

Hi, You're looking to turn a detailed spec into native iOS and Android apps with a single codebase, ready for TestFlight and Play Store submission. I've shipped cross-platform mobile apps with polished UI and maintainable codebases. I'd start by validating the current flow against the chosen stack, set up a minimal, shared codebase, and establish a practical rollback and QA workflow to verify real-device performance. Balancing native feel across platforms while keeping a consistent animation cadence can be tricky. What should happen if a design token changes mid-project, and how will design system updates sync across platforms? Who owns release gating and build validation, and what is your expected beta cadence and submission windows? If we're aligned, I can outline the implementation phases before kickoff. Best regards, Brandon

@melikatfz

Hi there, Building cross-platform apps that feel truly native while sharing a single codebase is where many projects face performance bottlenecks and clunky animations, but my expertise in React Native and Flutter ensures butter-smooth UI, secure auth flows, and robust architecture from day one. Here are my questions: 1. Are you leaning towards Flutter or React Native for the single codebase, or would you prefer my recommendation based on your wireframes? 2. Do you have a preferred backend service already set up for the email and password authentication, or should I build that from scratch? Drop me a message so we can get started right away.