
Closed
Posted
Recover, Reconstruct and Fix Existing Mobile App Project Overview I am looking for an experienced mobile app developer who can help me recover and continue development of an existing mobile application. A few months ago, I hired a freelancer through Freelancer.com to develop the app. The application was completed and uploaded to both the Apple App Store and Google Play. The iOS version was approved and published successfully. However, the Google Play version was rejected and requires changes before it can be published. Unfortunately, the original developer is no longer responding to my messages or emails, and their Freelancer.com account is no longer available. Because of this, I need a new developer who can investigate the existing application, recover as much of the project as technically possible, and take over the development. What I Currently Have I have access to: • Apple App Store Connect • Google Play Console • The existing iOS app/build that was uploaded • The existing Android/Google Play build and files that were uploaded • The Supabase backend/database • Supabase credentials and project access • The Google Play rejection information • Other files and information that the previous developer provided or uploaded However, I do not currently have the complete original source code/project files. What I Need The main objective is to determine what can be recovered from the existing builds and available project resources and then get the application back into a maintainable development state. The work may include: 1. Inspecting the existing iOS and Android builds. 2. Determining what technology/framework was used to build the application. 3. Recovering or reconstructing as much of the application source/project structure as technically possible. 4. Investigating the connection between the application and Supabase. 5. Understanding the existing database, authentication, APIs, storage and backend functionality. 6. Recreating missing project files where necessary. 7. Setting up the project so it can be built and maintained by a new developer. 8. Making the changes required by Google Play’s rejection. 9. Testing the application on Android and iOS. 10. Preparing and submitting an updated version to Google Play. 11. Ensuring that the existing iOS version continues to work correctly. 12. Providing properly organized source code and project files at the end of the project. Important I am not expecting the original source code to magically be recovered if that is technically impossible. I want an experienced developer who can first assess what is available and determine the most practical way to recover or reconstruct the project. The existing application is already functional, so I do not want to unnecessarily rebuild everything from scratch if significant parts of the application can be recovered or reused. Ideal Developer You should have experience with: • Mobile app development • iOS and Android • Reverse engineering / app inspection • Recovering projects from existing builds • Flutter, React Native or native mobile development • Supabase • Authentication and databases • Google Play Console • App Store Connect • Google Play rejection fixes • Reconstructing applications when original source code is unavailable Experience identifying the framework and structure of an existing mobile application is especially important. Before Starting Please explain: 1. Whether you have experience recovering or reconstructing mobile applications from existing builds. 2. What information/files you would need from me to assess the project. 3. How you would determine whether the application can be recovered without the original source code. 4. Whether you think it is better to recover/reconstruct the existing application or rebuild certain parts. 5. Your estimated cost and timeline for the assessment and subsequent development. I can provide access to the relevant accounts, builds and project resources once we establish the scope and security requirements. I am looking for someone who can potentially take over the project long-term, not just fix the Google Play rejection.
Project ID: 40720317
172 proposals
Remote project
Active 3 days ago
Set your budget and timeframe
Get paid for your work
Outline your proposal
It's free to sign up and bid on jobs
172 freelancers are bidding on average $8 USD/hour for this job

I HAVE WORKED ON SIMILAR APP RECOVERY & RECONSTRUCTION PROJECTS — I CAN TURN YOUR EXISTING BUILDS AND BACKEND INTO A MAINTAINABLE, PRODUCTION-READY APP AGAIN. I can take over your existing iOS/Android application, inspect the available builds and project resources, identify the technology/framework, and determine what can realistically be recovered or reconstructed without the original source code. My approach will cover: • Inspect iOS/Android builds and identify framework, architecture and dependencies • Analyze Supabase authentication, database, storage, APIs and existing data flow • Recover/reconstruct reusable project components wherever technically possible • Recreate missing modules and configure a clean, buildable development environment • Fix Google Play rejection issues and prepare the Android release • Test core functionality on Android and iOS while protecting the existing iOS version • Organize and deliver complete source code, project files and build documentation User roles and existing workflows will be preserved based on the current application and backend structure. I can first perform a technical assessment to decide whether recovery, partial reconstruction, or rebuilding specific modules is the most practical approach. I’ll provide a clear scope, timeline and cost after reviewing the available files and rejection details. I will also provide 2 years of free ongoing support after launch for maintenance and issue resolution. Thansk karuna
$5 USD in 40 days
8.4
8.4

Hi, I can help assess, recover, reconstruct, and take over the long-term development of your existing mobile application. I have experience with Android/iOS applications, Flutter/React Native, APIs, databases, authentication, Supabase, Play Console, App Store Connect, and resolving store rejection issues. I suggest starting with a technical assessment of the available APK/AAB/IPA builds, Play rejection details, Supabase project, store configurations, and any files received from the previous developer. I’ll identify the framework, inspect recoverable application structure and assets, map the Supabase database/API functionality, and determine what can realistically be reused. Rather than immediately rebuilding everything, I’ll first establish the most practical recovery path. Where source code cannot be recovered reliably, we can reconstruct only the necessary components while preserving the existing backend and functionality. After assessment, I can provide a clear recovery plan, timeline, and development cost. Regards, DJ
$6 USD in 40 days
7.8
7.8

Hi there, I can assess and take over your existing mobile app without unnecessarily rebuilding everything from scratch. I’ll first identify the framework from the available builds, inspect the iOS/Android packages and Supabase backend, review the Google Play rejection, and determine what can realistically be recovered or reconstructed. I can then set up a maintainable project, fix the required Android issues, test both platforms and handle the Play Store update while keeping the existing iOS app stable. Could you share the current builds, Google Play rejection details and any files provided by the previous developer so I can assess the recovery options and give you a clear cost and timeline? Kindly send me a message to discuss more or directly award me. Thank you!
$8 USD in 40 days
7.2
7.2

Hello there , Hope you are doing well We can help you assess, recover/reconstruct, fix, and take over the existing mobile application without unnecessarily rebuilding functionality that can be reused. our team has experience with Android/iOS development, Flutter, React Native, native mobile projects, Supabase, authentication, databases, API integrations, App Store Connect and Google Play Console. Our Approach 1. Technical Assessment & Recovery Audit Inspect the existing iOS and Android builds Identify the underlying framework/technology where technically possible Review APK/AAB/IPA and available project files Analyze app structure, assets, configurations and dependencies Review Google Play rejection details Review Supabase project, database, authentication, storage and APIs Identify what can be recovered, reconstructed or reused 2. Source Reconstruction Depending on what is available, we can: Recover available project/source files Reconstruct missing application components Recreate screens, navigation and business logic where necessary Reconnect the application with the existing Supabase backend Re-establish authentication, database and storage functionality Configure development/build environments We will first determine what is technica
$8 USD in 40 days
7.0
7.0

Hello, With over a decade of experience, my name is Yasir and I am the seasoned software developer you need to solve this complex recovery issue. I have deep expertise in mobile app development and have successfully recovered projects from existing builds many times in the past. While I can't promise miracles with recovering source codes when they're missing, my problem-solving skills combined with my deep knowledge of Flutter, React Native, and native mobile development will enable me to efficiently reconstruct and recover as much as possible from the available resources. A crucial aspect of this project is understanding the existing database, authentication, storage, Supabase and API functionality. With my extensive experience in building ERP/CRM systems and SaaS platforms, I'm well-versed in working with databases and handling complex backend connections. My proficiency in Google Play Console would also ensure that I can appropriately make changes and negotiate any rejections for Google Play publishing. Besides technical competence, I am known to deliver on time while maintaining quality standards. My goal is to minimize rebuilding efforts where unnecessary while bringing your application back to a fully functional and maintainable state. For an accurate cost estimate and timeline, let's connect so that I can evaluate the current state of the application, the extent of recovery feasible without source code, and best plan a way f Thanks!
$30 USD in 33 days
6.4
6.4

Hi, I specialize in mobile app recovery and development, with expertise in assessing existing builds and reconstructing applications without the original source code. I have experience with Flutter, React Native, and native mobile development, along with Supabase integration and Google Play rejection fixes. To assess your project, I would need access to the existing builds, Supabase credentials, and project resources. I will carefully inspect the iOS and Android builds to determine the most practical approach for recovery. My focus will be on salvaging as much as possible to minimize unnecessary rebuilding. I believe in providing a detailed assessment before proceeding with development. I am well-equipped to handle the technical challenges involved in recovering your application and ensuring its long-term success. Let's discuss further to determine the best way forward. Thank you.
$10 USD in 500 days
6.0
6.0

I have worked on recovering projects where the original source code was missing, helping clients regain control without full rewrites. For your app, the first step will be to analyze the iOS and Android builds, then use tools to identify the framework used—likely Flutter, React Native, or native code. From there, I’ll check what files and APIs are accessible and assess how tightly the app is coupled to the Supabase backend. To start, I’d need access to your current builds, Google Play rejection details, Supabase credentials, and any project files or documentation available. That will let me evaluate how much can be recovered versus what needs rebuilding. Typically, I examine the binary and metadata to reconstruct project structure. If key files are missing, some reconstruction or partial rewriting might be the most practical approach. Major rewrites are avoided if core functionality and integrations are intact. For timeline, I can perform the initial assessment and report findings within 3–5 days. Development and fixes for the Google Play issues will depend on the recovery scope but can be provided after the assessment. Let’s get the assessment going so you have a clear plan and can regain control. Ready to start once I get read access to the builds and accounts you mentioned.
$2 USD in 7 days
5.6
5.6

Hi, I’m a Flutter Developer with 6 years of experience building mobile apps with clean UI, reliable functionality, and smooth performance. I can help with new app development, API integration, Firebase, bug fixing, and app deployment. Thanks & Regards, Mohd Sohail
$5 USD in 40 days
5.4
5.4

With over half a decade of experience in the software engineering field, I specialize in full website and API development-feedback that I can translate to your mobile app project. Although I have rich experiences in Flutter and React-Native utility software, I have processed and delivered projects irrespective of frameworks. Your request for reviving an existing mobile application is a concern I love tackling, having done it many times effectively. As stated earlier, my proficiency isn't bound to a singular development framework. My expertise extends to API development, utilizing PHP, SQL, NodeJs, AJAX, JSON and other diverse tools your project might require. Not only do I have an excellent track record in Payment Gateway Integration with services like Stripe, Paypal, Instamojo and Payumoney -widening-full-stack developer glove. I fully understand the task ahead and propose we tackle it in 3 steps-we assess your project resources at my expense place or at least with your guidance-taking notes of what can be recovered or reconstructed from them. Finally, during reassessment after fixing any possible Google Play rejection issues I'll equip you with usable code and project files at the end of our contract. technologies;Supabase;authentication/databases;Google Play Console and more,I aim to recover as much as possible
$8 USD in 40 days
5.6
5.6

Hello, I HAVE SEEN YOUR DESCRIPTION. YOU NEED AN EXPERIENCED MOBILE DEVELOPER TO RECOVER, RECONSTRUCT AND TAKE OVER AN EXISTING IOS AND ANDROID APP WITHOUT UNNECESSARILY REBUILDING WHAT ALREADY WORKS. I have reviewed your requirements and can first perform a technical recovery audit covering the existing iOS/Android builds, framework identification, Supabase backend, authentication, database, storage, APIs and available project files. I have 10+ years of experience with Flutter, React Native, native iOS/Android development, Supabase, APIs, app-store deployment and debugging existing applications. Without the original source code, I would not assume everything can be recovered. I would inspect the available builds and project resources to determine what can be reused, what can be reconstructed, and which components would be more practical to rebuild. This approach avoids wasting time rebuilding functional backend or application components. I can also investigate the Google Play rejection, make the required Android changes, validate the iOS version remains functional, establish a clean maintainable project structure and prepare the updated build for Google Play submission. Working Flow: Build & File Audit → Framework Identification → Supabase/Backend Review → Recovery Assessment → Source Reconstruction → Google Play Fixes → iOS/Android Testing → Store Submission → Clean Handover Thanks, Invoke Tech
$5 USD in 40 days
5.7
5.7

Hello, I understand you need the existing mobile application carefully assessed, recovered where possible, and brought back into a maintainable state. I can review the available iOS and Android builds, identify the underlying framework, examine Supabase authentication, database, APIs, and storage connections, and evaluate whether reconstruction or a targeted rebuild is most practical. I would begin with a structured recovery assessment covering available artifacts, signing access, store rejection details, and backend resources, then document findings before development. I can also organize the resulting project files and address the Google Play requirements while protecting the published iOS version. Check out my portfolio here:- https://www.freelancer.com/u/installerpoint Best Regards, Muhammad Adeel
$25 USD in 29 days
5.4
5.4

Hi, I understand you need to recover and take over an existing iOS/Android app without the original source code. I can inspect the existing builds, identify the framework, review the Supabase backend, and determine what can be recovered or reconstructed without unnecessarily rebuilding the app. I can also handle the Google Play rejection fixes, testing, build setup, and deployment while keeping the existing iOS version working. I’d start with a 2–4 day technical assessment and then provide the exact development scope, cost, and timeline. Quick question: Can you share the existing APK/AAB and Google Play rejection report for the initial assessment? Best Regards, Hassan H
$10 USD in 40 days
5.5
5.5

Hi, I can assess the existing mobile app builds and help recover what’s possible, including addressing the Google Play rejection. However please note that original source code is not recoverable from app stores. The recommended way is to use the apps from app stores as a guideline / inspiration and code everything again while keeping deliverables under your control from start. Please share the app link ad I will take it from there. My approach will involve analyzing the current Android and iOS versions to identify the technology stack, then determining how to integrate with Supabase and recreate any necessary project files. Given the existing builds, we can minimize rebuilding from scratch wherever possible. With similar projects under my belt, I'm confident in navigating the recovery and development of your app while ensuring both platforms function smoothly. Happy to discuss the current setup and take it from there. Best regards, Mohammad
$20 USD in 40 days
5.4
5.4

Hello, I can help take ownership of this mobile application recovery and development effort, beginning with a structured audit of the available iOS and Android builds, submission files, Supabase project, credentials, and Google Play rejection details. I will identify the framework, assess what can be recovered or reconstructed, document dependencies, and recommend recovery versus targeted rebuilding before making unnecessary changes. The process can then continue into a maintainable project setup, Supabase integration review, Google Play compliance fixes, cross-platform testing, and organized handover of the source and build configuration. I will also protect the currently published iOS version while validating Android changes. Please share the available build artifacts, rejection notice, package identifiers, and any signing or repository files for the initial assessment. Thank you! Muhammad
$25 USD in 26 days
5.0
5.0

I've recovered and reconstructed mobile apps from existing builds before, so this is right in my wheelhouse. I'll inspect the iOS and Android builds to identify the framework, then reverse-engineer the Supabase integration and database schema. I'll set up a development environment, fix the Google Play rejection, and ensure the iOS version remains stable. The project will be fully documented for long-term maintenance. I can start immediately. Thanks, Andrii.
$5 USD in 40 days
4.9
4.9

I see you need a developer to recover and continue work on your mobile app after the Google Play version was rejected. Given your access to App Store Connect, Google Play Console, and Supabase, I can help assess what can be salvaged from those existing builds. A key challenge will be determining the framework used, especially since you don’t have the original source code. And I’ve handled similar situations where reverse engineering was necessary, so I know the pitfalls to avoid. My approach will involve inspecting both the iOS and Android builds to identify the tech stack and reconstruct the project structure as much as I can. I’ll also address the Google Play rejection issues, and make sure the app remains functional on iOS. I’m ready to go ahead and dive in and get started on this right away. Rajavel Mobile App Developer | iOS | Android | Supabase
$2 USD in 1 day
5.2
5.2

Hi, You’re in a difficult position: the app is already live on iOS, the Android version is blocked by Google Play, and the original developer has disappeared without handing over the source code. The priority should be recovering what already works and getting you back to a maintainable project—not blindly rebuilding an app you’ve already paid to develop. I have 8+ years of mobile/web application development experience and can audit the existing iOS/Android builds, identify the framework and project structure, inspect the Supabase integration, and determine what can realistically be recovered or reconstructed. I can then handle the missing implementation, Google Play rejection fixes, Android/iOS testing, deployment, and organize everything into a maintainable codebase. For the initial assessment, I’d need the existing APK/AAB, iOS build if available, Google Play rejection details, Supabase access, and any files from the previous developer. I’d assess the recovery potential before recommending whether to recover, reconstruct, or rebuild specific parts. I’m also available to take over the project long-term once it’s stabilized.
$8 USD in 40 days
5.1
5.1

hello there , I can help recover, reconstruct, and take over your existing mobile app ,I have experience working with Flutter/React Native, Android/iOS, Supabase, authentication, databases, APIs, App Store Connect and Google Play Console, including projects where the original source code is incomplete or unavailable. Inspect the existing iOS/Android builds and identify the technology/framework used. Analyze the available APK/AAB/IPA and project files to determine what can realistically be recovered. Review your Supabase database, authentication, storage, APIs and backend structure. Reconstruct missing project/configuration files where technically feasible. Set up a clean, maintainable development environment. Analyze the exact Google Play rejection and implement the required fixes. Test both Android and iOS while ensuring the published iOS version remains unaffected. Build, sign and submit the corrected Android version to Google Play. I would first perform a technical assessment to determine what can be recovered, what needs to be reconstructed, and whether selective rebuilding is required. I’ll then provide a clear development plan, estimated timeline and cost. I’m also interested in taking over the project for long-term development and maintenance after the recovery and Google Play approval. Please share the existing APK/AAB, available project files, Supabase resources and Google Play rejection report, and I can begin the assessment. thanks
$5 USD in 40 days
5.2
5.2

Experienced mobile app developer specializing in project recovery and reconstruction. I understand the need to revive and further develop your existing mobile app project that faced challenges during Google Play approval. With a background in mobile app development and experience working with Supabase backend systems, I'm well-equipped to investigate, recover, and continue the development seamlessly. How can we ensure that the new changes meet Google Play's requirements while maintaining the app's core functionality? Regards, Yogesh Kumar
$3 USD in 31 days
4.9
4.9

Hello, I am an experienced mobile app developer. I can reconstruct your existing mobile app and continue development as per your requirement. I will answer the 5 questions asked in the description later in the chat. Why hire me? - 8+ years of Software engineer experience. - Clear communication in English - Reasonable rate with no compromise in quality - Individual freelancer you can talk with directly, not an agency, no middle-man Please send me a message to discuss further and get started. Thanks.
$4 USD in 40 days
5.3
5.3

Jönköping, Sweden
Payment method verified
Member since May 30, 2026
$2-8 USD / hour
$2-8 USD / hour
$2-8 USD / hour
$2-8 USD / hour
$2-8 USD / hour
₹100-400 INR / hour
₹12500-37500 INR
$30-250 CAD
₹750-1250 INR / hour
₹250000-500000 INR
$3000-5000 AUD
$15-25 USD / hour
$2-8 USD / hour
€30-250 EUR
$750-1500 USD
₹37500-75000 INR
₹100-400 INR / hour
₹1500-12500 INR
₹750-1250 INR / hour
₹12500-37500 INR
₹37500-75000 INR
₹12500-37500 INR
€250-750 EUR
£20-250 GBP
₹750-1250 INR / hour