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# **Stack:** Flutter/Dart **Platforms:** iOS 14.0+, Android 9.0+ (API 24+) **Languages:** English, Spanish, German --- ## TASK Complete reskin of sound_generator project to pass App Store and Google Play moderation. App must be sufficiently different from original to avoid Guideline 4.3 rejection. --- ## FUNCTIONALITY ### PLAYER - Play/Stop buttons - Waveform visualization (change design from original) - Volume control - Timer/Scheduler (auto-off) - Favorites system (save favorite frequencies) --- ## SCREEN STRUCTURE ### Onboarding (5 screens) 1. Welcome screen 2. Features showcase 3. Paywall screen **Request 3 permissions in onboarding:** - Push notifications - App tracking (for analytics) - Request review (review prompt) ### Main window (5 screens/tabs) 1. Home (preset frequencies list) 2. Player (generator with visualization) 3. Favorites (saved) 4. Timer (schedule) --- ## LOCALIZATION **Languages:** English, Spanish, German **What to localize:** - All UI texts **Format:** - JSON files for each language ([login to view URL], [login to view URL], [login to view URL]) - Identical keys in all files **Client provides:** - [login to view URL] (English - base) - Spanish/German translations - we do ourselves --- ## DESIGN **Requirements:** - Completely new UI (differs from original minimum 70%) - New color scheme - New icons - New app icon (1024x1024) --- ## TECH STACK **Framework:** Flutter 3.19+ **Packages (required):** - sound_generator (base library) - in_app_purchase (subscriptions) - intl or easy_localization (localization) - shared_preferences (save favorites) - firebase_core, firebase_analytics (analytics) **State Management:** Provider or Riverpod --- ## ANALYTICS AND INFRASTRUCTURE ### Provided by client: **Accounts:** - GitHub Organization with Docker Compose - App Store Connect (iOS) - Google Play Console (Android) **Services:** - Firebase Analytics (analytics, crashes, FCM push) - Amplitude (product analytics, funnels, Session Replay) **Testing:** - Firebase Test Lab or BrowserStack - TestFlight Internal Testing --- ## DEVELOPMENT STAGES ### Stage 1: Version without permissions and In-App **Goal:** Pass moderation **Features:** - Onboarding (5 screens) WITHOUT permission requests - WITHOUT paywall (free app) - Localization (3 languages) - Firebase Analytics basic integration **Permissions:** NONE **Publishing:** App Store + Google Play (free app) --- ### Stage 2: Push notifications and actions **Add:** - Push notifications (Firebase FCM) - App tracking permission **Publishing:** Update v1.1 --- ### Stage 3: Monetization (IAP) **Add:** - Paywall screen - In-app purchases (weekly/yearly subscription) - 7-day trial - Restore purchases **Publishing:** Update v1.2 (monetization enabled) --- ## TESTING **Required:** - Unit tests (critical logic) - E2E tests (onboarding, purchases, player) - K6 load testing (1000+ users) - TestFlight Internal Testing (iOS) **All tests pass in CI/CD before release** --- ## DOCUMENTATION **Must provide:** **1. [[login to view URL]]([login to view URL])** **2. API documentation** **3. Deployment and servers** --- ## SUPPORT **After publication:** - 1 month free bug fixes Acceptance criteria: Work is considered complete after: 1. All tests (Unit, E2E, K6) pass 2. TestFlight Internal Testing passed (no critical bugs) 3. App published in App Store and Google Play in 3 releases ---
ID do Projeto: 40124818
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62 freelancers estão ofertando em média $149 USD for esse trabalho

Hi, I can sense your goal to deliver a sleek, fully compliant, and fresh user experience with this Flutter-based frequency app reskin. Having deep expertise in Flutter development and app store submission processes, I will ensure a distinct UI redesign with new visuals and a revamped app icon that exceeds the 70% difference threshold to easily bypass Guideline 4.3. I am fully aligned with your multi-stage rollout—from the initial moderation-ready version to push notifications and monetization updates, managing localization and analytics as specified. I’ll implement Provider or Riverpod for state management and integrate all required Firebase and in-app purchase functionalities, backed by comprehensive unit, E2E, and load testing pre-release. You’ll get clear documentation and 1-month post-launch support. I’ve shared an initial estimate based on your description, and once we go over a few technical or functional details, I’ll confirm the exact cost and delivery schedule. Could you clarify if you have any design preferences or references for the new UI and icon, especially for differentiating from the original app? Thanks, Asad
$95 USD em 5 dias
8,1
8,1

Hello aman3647884, We went through your project description and it seems like our team is a great fit for this job. We are an expert team which have many years of experience on PHP, Mobile App Development, iPhone, Android, Dart, App Design, iOS Development, Flutter, App Reskin, Android App Development Please come over chat and discuss your requirement in a detailed way. Thank You
$140 USD em 7 dias
6,9
6,9

Hi there! ? I am excited to present my proposal for the Modern Frequency App Reskin project. With over a decade of experience in Full-Stack Development, Digital Solutions, and Mobile App Development, I am confident in my ability to reskin the sound_generator project to meet your requirements and pass App Store and Google Play moderation successfully. I will create a new UI design, different from the original by at least 70%, with a fresh color scheme and icons, ensuring compliance with Guideline 4.3. In the development process, I will focus on implementing the required functionalities such as Player controls, Favorites system, scheduling features, and multilingual support for English, Spanish, and German. The reskinned app will have distinct screens for onboarding, main windows, and localization based on JSON files for each language. By utilizing Flutter 3.19+ framework and essential packages like sound_generator, in_app_purchase, and firebase_analytics, along with state management using Provider or Riverpod, I will deliver a high-quality, user-friendly app. My proposed timeline includes three stages - Stage 1 for basic app functionality, Stage 2 for push notifications and actions, and Stage 3 for monetization through in-app purchases. I am committed to thorough testing, including unit tests, E2E tests, K6 load testing, and TestFlight Internal Testing to ensure a seamless user experience. Post-launch, I offer 1-month free bug fixes and support. Looking forward to collab
$160 USD em 25 dias
6,9
6,9

Hi there, I appreciate the detailed project outline for the Modern Frequency App Reskin, and I'm excited about the opportunity to work on it. With extensive experience in Flutter and Android/iOS development, I can ensure the app meets the guidelines for App Store and Google Play while delivering a fresh and engaging user experience. My approach will involve creating a completely new UI that is at least 70% different from the original while implementing the functionalities specified, including advanced features like the favorites system and an effective timer/scheduler. I propose to kick off the project with an initial version that complies with your requirements and successfully passes moderation. Given the scope, I estimate it can be completed within 30 days, followed by the testing stages to ensure quality.
$100 USD em 5 dias
6,5
6,5

Hi there, I’m offering a 30% discount on my first project to reskin your Modern Frequency app at an affordable rate. I specialize in creating visually appealing, user-friendly, and modern mobile app designs that enhance the look and feel of existing applications while maintaining functionality. Each reskin will be tailored to your app, including updated UI elements, color schemes, typography, icons, layouts, and interactive components to ensure a refreshed and polished user experience. I understand how important it is for app reskins to balance aesthetics, usability, and brand consistency to keep users engaged. I can help with full interface redesign, theme customization, visual consistency, and testing across devices while ensuring a seamless transition without disrupting existing features. My focus is always on delivering app reskins that feel modern, intuitive, and professionally designed. If you’re looking for a reliable professional who can reskin your Modern Frequency app effectively, I’d be delighted to collaborate and bring your refreshed app vision to life. Kind regards, Sohail Jamil
$30 USD em 1 dia
6,7
6,7

Hello There!!! ⚜⭐⭐⭐⭐⚜(( Flutter reskin built to pass App Store and Google Play moderation ))⚜⭐⭐⭐⭐⚜ What stands out in your brief is the clear focus on Guideline 4.3 compliance and a staged rollout that prioritizes approval before monetization. This is not just a visual refresh, it is a structural and experiential redesign that must feel genuinely new while keeping the core sound generation logic reliable. You are looking for a Flutter developer who can handle a full reskin, rethink onboarding and navigation, manage localization properly, and deliver a moderation safe release before layering permissions, analytics depth, and subscriptions. The attention to testing, CI, and documentation shows you are aiming for a long term product, not a quick clone. I have worked on Flutter applications where store compliance, phased releases, and localization were critical. My approach would start with a clean visual system and navigation redesign, then align state management, analytics hooks, and testing with your three stage release plan so each submission feels deliberate and low risk. Key project features: * A fully original UI with new waveform visuals, icons, and color system * Structured onboarding and navigation redesigned for moderation safety * Robust localization, testing, and CI ready builds for staged releases Warm Regards, Farhin B.
$100 USD em 1 dia
6,5
6,5

With over 3 years of hands-on experience in Flutter app development and UI/UX design and a sound knowledge of the required framework and packages of this project, I am perfectly equipped to handle your Modern Frequency App Reskin. My ability to handle both design and development - eliminating gaps between UI and implementation - ensures a seamless execution of new designs, new color schemes, and new icon placements. Moreover, my multilingual proficiency - English, Spanish, German - will be an asset as we plan on adapting all UI texts into three languages using JSON files. Additionally, I have comprehensive experience with Firebase Analytics which is incredibly helpful as I have previously configured it for analytics, crashes as well as FCM push notifications. The fact that you require someone who also values writing clean, maintainable, and scalable Flutter code aligns perfectly with my personal coding ethos. Finally, my ability to perform thorough testing including K6 load testing (1000+ users) guarantee zero critical bugs at the time of launch. And within my one month support period after launch, any issues or bugs that arise will be immediately taken care of. In conclusion: my proven experience in Flutter app development; fluency in multiple languages; adherence to user-focused principles; and careful attention to detail make me the perfect candidate for this project. Let's get to work!
$200 USD em 7 dias
5,4
5,4

Hello there, I am excited to assist with the complete reskin of your sound_generator project for both iOS and Android platforms using Flutter/Dart. I will ensure the app's UI is at least 70% different from the original to meet App Store and Google Play guidelines. The focus will be on redesigning the player interface, updating the color scheme, and creating new icons and app icon. I will handle the onboarding flow, localization in English, Spanish, and German, and integrate Firebase Analytics for insightful user data. Utilizing Provider or Riverpod for state management will ensure efficient app performance. I will conduct thorough unit and E2E tests, ensuring the app passes all moderation criteria in the initial version. Questions: • Do you have any specific design preferences or inspirations for the new UI? • Would you prefer to use Provider or Riverpod for state management? I am committed to delivering a polished and market-ready app, ensuring seamless updates for push notifications and monetization in subsequent stages. Looking forward to bringing your vision to life. Thanks and best regards, Faizan
$90 USD em 5 dias
5,4
5,4

Hi There!!! !!>>> THE PROJECT GOAL IS TO COMPLETE A FULL RESKIN OF A SOUND GENERATOR APP TO PASS APP STORE AND GOOGLE PLAY MODERATION <<<!! I have carefully studied your project description and understand all your requirements, from onboarding, player functionality, localization, to testing and publishing. I am the best fit for this project because I can deliver high-quality Flutter apps with clean UI, proper state management, and smooth app store compliance. Key points: 1. Complete reskin with 70% new UI, icons, and app design. 2. Multi-language support (English, Spanish, German) with JSON localization. 3. Integration of Firebase Analytics, push notifications, and in-app purchases in stages. I provide design, database management, testing, source code delivery, and basic app maintenance. I have 9+ years experience as a full stack developer and worked on apps with audio players, timers, favorites, and subscription models. Looking forward to chat with you for make a deal Best Regards Elisha Mariam!
$100 USD em 1 dia
5,1
5,1

Hi, I can help with this task. Ready to start immediately.
$30 USD em 1 dia
4,3
4,3

Hello, I am a Flutter developer and I work exclusively with Flutter. I can handle this project end-to-end, including a complete reskin, localization, testing, and ensuring full App Store and Google Play compliance. I will redesign the app with a fully new and unique UI (colors, icons, waveform visualization, onboarding flow, and app icon) so it is clearly different from the original and meets Guideline 4.3 requirements. All player features, favorites, timer, localization (EN / ES / DE), Firebase analytics, and the staged releases (Stage 1, Stage 2, Stage 3) will be implemented as described. I have hands-on experience with Flutter 3.x, Provider/Riverpod, JSON-based localization, Firebase services, In-App Purchases, and testing workflows. The code will be clean, well-structured, and ready for future updates. Since the scope is detailed and multi-stage, I would prefer to discuss the project first in chat to fully understand the current app, confirm stage-wise planning, and align on timeline and budget. Let’s connect in chat and go through the details before starting. Looking forward to your response.
$220 USD em 6 dias
4,1
4,1

Hi, I’m Karthik, a Flutter/Dart lead with 10+ years of experience delivering App Store– and Play Store–compliant mobile apps, including full reskins to avoid Guideline 4.3 issues. I understand this is a complete reskin + staged release project. The goal is a 70%+ UI differentiation, clean architecture, solid testing, and smooth moderation across iOS & Android. How I’ll execute: • Full UI/UX reskin (new color system, icons, app icon 1024×1024, redesigned waveform) • Rebuild screens: Onboarding (5), Home, Player, Favorites, Timer • Player features: Play/Stop, new waveform, volume, timer, favorites • Localization (en/es/de) using JSON with identical keys • Flutter 3.19+, Provider/Riverpod, clean state separation Staged delivery (as requested): • Stage 1: Free app, no permissions/IAP, localization, Firebase Analytics → publish v1.0 • Stage 2: FCM push + tracking permission → v1.1 • Stage 3: Paywall, IAP (weekly/yearly), trial, restore → v1.2 Quality & Infra: • Unit + E2E tests, K6 load (1k+), CI/CD passing • Firebase + Amplitude integration • TestFlight Internal + Play Console release • Full README, API docs, deployment notes • 1 month post-launch bug fixes I’m comfortable with your stack, moderation rules, and release discipline. Ready to start and ship all 3 releases cleanly.
$333 USD em 7 dias
4,0
4,0

Hello, Greetings ! I’ve carefully checked your requirements and really interested in this job. I’m full stack developer working at large-scale apps as a lead developer with U.S. and European teams. I’m offering best quality and highest performance at lowest price. I can complete your project on time and your will experience great satisfaction with me. I have rich experienced in App Reskin, Flutter, Android, PHP, Mobile App Development, Android App Development, iPhone, Dart, App Design and iOS Development. For more information about me, please refer to my portfolios. I’m ready to discuss your project and start immediately. Looking forward to hearing you back and discussing all details.. Thank you
$100 USD em 5 dias
3,7
3,7

Hello, I’ve reviewed your requirements in detail, and this is a well-structured, moderation-driven Flutter reskin project—exactly the kind of work I handle end-to-end. I can deliver a 70%+ differentiated reskin of the existing sound_generator app that fully complies with App Store Guideline 4.3, including a completely new UI, color system, icons, app icon, and redesigned waveform visualization—while preserving required core functionality. I’m comfortable working with Flutter 3.19+, Provider/Riverpod, and the full stack you specified: sound_generator, in_app_purchase, intl/easy_localization, shared_preferences, Firebase Analytics, and Amplitude. Localization will be handled cleanly via JSON files with identical keys across EN/ES/DE. I understand and support the 3-stage rollout strategy: • Stage 1: Free app, no permissions, no IAP, moderation-safe • Stage 2: Push + tracking permissions • Stage 3: Paywall, subscriptions, trials, restore purchases Testing will include unit tests, E2E flows, TestFlight internal testing, and CI/CD gatekeeping before each release. I’ll provide full documentation (README, deployment, API notes) and 1 month of post-release bug fixes. I’m comfortable working inside your GitHub org, Firebase, App Store Connect, and Play Console, and coordinating releases cleanly. If you want this done correctly, review-safe, and future-proof, I’m ready to proceed. Best regards, Amaan Khan L. (CUBEMOONS PVT.)
$200 USD em 7 dias
3,6
3,6

With extensive experience in building highly-functional, user-friendly, and aesthetically pleasing Flutter applications, I am confident I can deliver a reskinned sound_generator app that not only meets your aesthetic requirements but also successfully secures approval on both App Store and Google Play. My familiarity with the pertinent frameworks, packages, and state management practices (Provider or Riverpod) ensures swift and excellent implementation of requested functionalities such as play/stop buttons, waveform visualization, volume control, timer/scheduler system, and favorites saving. Additionally, my knowledge of and experience with key packages like sound_generator (base library), in_app_purchase (subscriptions), intl or easy_localization (localization), shared_preferences (save favorites), firebase_core, firebase_analytics (analytics) aligns well with your project's need. Notably, my facility with Firebase Analytics for tracking and crashes would be a great asset in integrating the provided infrastructure. Crucially, my discipline in employing unit tests for critical logics[E2] along with K6 load testing to ensure robustness ensures high-quality applications while my enthusiasm to provide one-month free bug fixes demonstrates commitment to clients’ success. Let’s collaborate to create an app that passes moderation seamlessly and impresses the end-users with its refreshing design and reliable functionality.
$140 USD em 7 dias
3,8
3,8

I NEVER USE AI FOR BIDDING! You need a full Flutter app reskin, localized in 3 languages, with revised UI to pass App Store and Google Play moderation and staged feature rollout. I have delivered identical reskin and moderation-passing projects on Flutter targeting iOS and Android with custom onboarding, localization, analytics, paywalls, and CI/CD-tested releases. Looking forward to discussing more details. Stack: Framework: Flutter Packages: sound_generator, in_app_purchase, intl/easy_localization, shared_preferences, firebase_core, firebase_analytics State Management: Provider, Riverpod Languages: Dart Platforms: iOS, Android Testing: Unit/E2E/K6, CI/CD integration Analytics: Firebase, Amplitude Infrastructure: GitHub, Docker Compose, TestFlight, Firebase Test Lab Design: Full UI redesign, icons, color scheme, new app icon Support: 1 month bug fixes after publication
$140 USD em 1 dia
3,4
3,4

Hi there, I have carefully reviewed your project requirements for the Modern Frequency App Reskin. The task involves a complete reskin of the sound_generator project to meet App Store and Google Play guidelines. The new design will include updated features like Play/Stop buttons, waveform visualization, volume control, and a Favorites system. The app will have an onboarding process with 5 screens and main windows with 5 tabs for different functionalities. Localization in English, Spanish, and German will be implemented with JSON files for each language. The new UI design will be unique, with a different color scheme, icons, and app icon. The development will be done using Flutter 3.19+ and required packages like sound_generator, in_app_purchase, and firebase_analytics. The project will be developed in stages, focusing on passing moderation, adding permissions and In-App purchases, and implementing monetization. Testing will include unit tests, E2E tests, and K6 load testing before publishing on App Store and Google Play. Documentation and support will be provided as per the requirements. Let's discuss in detail through chat.
$150 USD em 1 dia
3,2
3,2

I think we are the perfect fit for your project. We specialize in customizing Wix websites, creating secure client login systems, and developing user-friendly dashboards. Our expertise includes integrating various storage applications like Dropbox, Google Drive, and OneDrive seamlessly into web portals. With over 60 5-star reviews on similar projects, we ensure a professional and seamless experience. We're adept at implementing unique authentication methods for each client for a personalized touch. Your vision of a clean, professional, and integrated web portal aligns perfectly with our skills. I’d love to chat about your project! The worst that can happen is you walk away with a free consultation. Chris | Lead Developer | Novatech
$140 USD em 14 dias
3,5
3,5

Hi, I can do this. I have extensive experience in Flutter and Dart, specializing in mobile app development for both iOS and Android platforms. I understand the requirements for reskinning the sound_generator project to meet App Store and Google Play guidelines, ensuring a unique design and functionality. I will implement the specified features, including a new UI, waveform visualization, volume control, and a favorites system. Localization will be handled efficiently with JSON files for English, Spanish, and German. I will ensure all development stages are completed, including thorough testing and documentation. With a focus on quality, I will ensure all tests pass and the app is published successfully in three stages. I am committed to providing one month of free bug fixes post-launch. Looking forward to collaborating on this project. Ashnasajid
$140 USD em 3 dias
2,9
2,9

Hi, I hope you are doing well. I understand that you need a complete reskin of the sound_generator project to ensure it meets App Store and Google Play guidelines while providing a fresh and engaging user experience. My approach will involve: - Designing a completely new UI that is at least 70% different from the original, incorporating a new color scheme and icons. - Implementing all required functionalities, including the player controls, timer/scheduler, and favorites system, while ensuring localization in English, Spanish, and German. - Conducting thorough testing, including unit and E2E tests, to ensure all features function smoothly before the final release. I can start immediately and complete the work within a short timeline. Looking forward to your reply.
$30 USD em 7 dias
3,2
3,2

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