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Unity Developer Needed to Rebuild and Republish Existing birdsong App - The original application was developed in Unity and previously published on Google Play. However, the original developer is no longer available, and I possess only the compiled application file, not the editable Unity source project. Therefore, this assignment requires a clean redevelopment based on the existing app, available screenshots, content, audio files, branding and functional demonstrations. The new application must preserve the core purpose and recognizable elements of the birdsong app while providing a modern, secure and fully maintainable Unity codebase. This is not an APK-decompilation project. I require a professionally rebuilt application with complete editable source code and clear documentation. Core Purpose of the App educational and research-based birdsong application that helps users explore and understand sounds of bird. The redesigned app should: Preserve the name, logo, theme and core concept. Have a modern, polished and industry-friendly appearance. Be understandable to students, researchers and members of the public. Use large, clearly labelled controls. Avoid excessive animation, clutter or game-like visual effects. Work properly on common Android phone and tablet screen sizes. Maintain consistent fonts, colours, icons and navigation. Be designed so that content and audio categories can be updated later. The existing compiled app, screenshots and available assets will be provided as functional references. The developer should reproduce the essential experience without copying inaccessible or proprietary third-party code. Technical Requirements The developer must: Rebuild the application as a new, clean Unity project. Use a current, stable and officially patched Unity LTS version. Avoid Unity versions affected by CVE-2025-59489. Target Android 16/API level 36 or the higher level required by Google Play at submission. Ensure compatibility with Android’s 16 KB memory page-size requirement. Use supported, actively maintained Unity packages and Android libraries. Remove unnecessary permissions, SDKs and background services. Implement microphone, storage and media permissions according to current Android requirements. Handle permission denial gracefully. Avoid insecure network communication or dynamic downloading of executable code. Provide clear error messages when recording, analysis or network functions fail. Optimize application size, loading time and battery use. Perform a clean release build and generate a signed Android App Bundle. Retain the existing Android package name so the new build can update the existing Google Play listing. Use a version code higher than all earlier Play Console releases. Work with the existing Google Play App Signing configuration. Assist with Play Console testing, compliance declarations and production submission. No advertising, analytics, tracking or third-party data collection SDK should be introduced without my written approval. The final delivery must include: Complete and editable Unity project. All Unity scenes, C# scripts, settings, packages and configuration files. All source assets used in the application. Final signed Android App Bundle ready for Google Play. Test APK for review before production submission. Higher Android version code and correct existing package name. Confirmation of API 36 compliance. Evidence of 16 KB memory-page compatibility. Confirmation that the build uses a patched Unity version. Source files for all custom icons and graphics. Documentation explaining how to open, build and maintain the project. List of all Unity packages, plugins, SDKs and external dependencies. Documentation for any server, API or machine-learning integration. Assistance with internal testing and Google Play production submission. Correction of reasonable technical or compliance issues identified during Google Play review. Final transfer of all code, assets and intellectual-property rights to the client. The project will not be considered complete if only an APK or AAB is delivered. The complete buildable Unity source project is mandatory.
Project ID: 40602246
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48 freelancers are bidding on average ₹955 INR/hour for this job

--- Unity Birdsong App Rebuild & Google Play Republishing --- I can help rebuild your existing birdsong app as a new Unity project with a clean, maintainable codebase while preserving its core functionality and supporting future updates. Here's my approach: → Rebuild the app from your APK, screenshots, audio, and other available assets in a new Unity LTS project. → Update the app for Android API 36, Play Store requirements, and current Unity security standards. → Deliver the complete Unity source project, signed AAB/APK, documentation, and deployment support. → Assist with Play Console testing, compliance, and production submission. Flow Review Existing App → Rebuild in Unity → Testing → Play Store Compliance → Production Release Question Does the existing app include offline audio analysis or any machine learning features, or is it primarily a birdsong library with playback and recording? Let's connect... Thanks
₹1,150 INR in 40 days
7.2
7.2

Your app will fail Google Play review if the audio processing pipeline cannot handle real-time microphone input at 44.1kHz without buffer overflow on devices with 16KB page sizes. Unity's legacy AudioClip API breaks under API 36's stricter memory alignment rules. Quick questions - are you using server-side ML for birdsong classification, or does the analysis run locally on-device? And do you have the original training dataset, or will I need to reverse-engineer the classification model from the compiled APK's behavior? Here is the architectural approach: - UNITY LTS 2022.3.52f1: Rebuild using the latest patched version that resolves CVE-2025-59489 and supports Android 16KB page alignment without runtime crashes. - ANDROID API 36 COMPLIANCE: Implement scoped storage with MediaStore API, request RECORD_AUDIO at runtime, and handle permission denial with fallback UI that explains why microphone access is required. - BIRDSONG ANALYSIS PIPELINE: Integrate either TensorFlow Lite for on-device inference or build a REST API wrapper if your classification model requires cloud processing, ensuring offline mode degrades gracefully. I've rebuilt 4 educational Android apps from legacy codebases for university research labs, including one bioacoustics tool that processed 12-hour field recordings without memory leaks. Let's schedule a 20-minute call to confirm your ML architecture before I start the Unity rebuild.
₹900 INR in 30 days
6.5
6.5

Hello sir i have done lot of games in unity game engine and i have more then 7 years experience in unity game engine and i can do any type of games so please send me more details about your game project and i will give you daily updates well but i need daily communication if possible so i can do fast and good as you require.
₹1,000 INR in 40 days
6.3
6.3

✋ Hi There!!! ✋ The Goal of the project:- REBUILD AND REPUBLISH A SECURE, MODERN AND FULLY MAINTAINABLE UNITY BIRDSONG EDUCATIONAL APP WITH COMPLETE EDITABLE SOURCE CODE AND GOOGLE PLAY COMPLIANCE. I have carefully read and understood your complete requirements, including clean Unity redevelopment, Android 16/API 36, 16 KB page-size support, permissions, performance, package preservation, Play Console submission, and complete source delivery. With 9+ years of experience as a full stack developer, I am the best fit for this project. 1. Unity and C# app redevelopment 2. Modern UI design and audio features 3. Android API 36 and 16 KB compatibility 4. Testing, optimization and Play Store submission 5. Complete Unity source code and documentation I have completed similar Unity educational and audio-based mobile applications with maintainable code and production-ready releases. Looking forward to chat with you for make a deal Best Regards Elisha Mariam!
₹750 INR in 40 days
5.4
5.4

With over 5 years of experience as a full-stack mobile developer, I am well-equipped to handle your project. My core skills in", "Flutter, React Native and familiarity with Firebase are directly applicable to the requirements of this task. I have produced usable and scalable applications for both Android and iOS platforms. For instance, my current projects such as Victoria UAE Real Estate and IVI Cryptos attest to my proficiency in building educational apps that can stand the test of time. In light of this, I firmly believe that my skill set is a perfect fit for this project.", "I'm also well-versed in complying with Android's strict page-size requirement and experienced in modernizing legacy applications without compromising their core functions. My previously approved applications speak for themselves when it comes to using large, clearly labelled controls that offer seamless navigation.", "In addition to coding prowess, I place great importance on post-launch support and maintenance. Hence, I give you my assurance that I will not only rebuild you a state-of-the-art birdsong app but also provide clear documentation for future alterations or updates you may require. Given the chance, I'll guarantee a modernized application, while preserving its distinctiveness and functionality."
₹1,000 INR in 40 days
6.2
6.2

As an experienced Full Stack Developer and Digital Solutions Expert, I have a track record of delivering successful projects and providing long-term support. My skillset perfectly aligns with your requirement for an efficient Unity Developer. With over 8 years of experience under my belt, I bring to the table the expertise in C# programming and mobile app development that your project demands. I understand the intricacies involved in rebuilding and republishing apps without the source code and can assure you a professionally rebuilt application with substantial documentation and a complete editable source code. By targeting a stable and patched Unity version, keeping up with current Android requirements and optimizing application size, loading time and battery use, I would ensure our reconstructed app is modern, secure, fully maintainable and industry-friendly. Most importantly, I recognize the significance of your project in imparting education and channeling research efforts into understanding bird songs. My commitment lies in preserving your app's core purpose while elevating it structurally to meet contemporary standards. With thorough internal testing ensuring smooth Google Play productions submission, I’ll be right there alongside you throughout the process. Collaborate with me for a remake that accurately replicates the existing experience while opening doors to future updates!
₹750 INR in 40 days
4.9
4.9

With over 9 years of specialized experience as a Unity Game and Mobile Application Developer, including strong skills in game optimization for performance and memory, I am the perfect fit for your project. I have extensive experience in building and rebuilding applications, maintaining its visual appeal while ensuring it functions optimally on all screen sizes. I understand the importance of preserving your brand's identity and incorporating the simplicity and efficiency that you seek. My past projects have necessitated creating maintainable codebases using supported and actively maintained packages, a requirement which aligns perfectly with your need to update audio categories later. My utmost priority is ensuring my applications are modern, secured, and fully maintainable, even when working with an existing compiled app. I also iteratively test my builds to avoid any compatibility issues conforming to Google Play requirements. Being an ardent advocate of clean release builds, anything superfluous or insecure is removed to deliver an optimized size application with less loading time and battery use – these being key areas of your project's specification. I am well-versed in situating tasks such as testing and submission into a coherent project timeline; thus, eliminating any logistical hurdles that a lack of communication could create.
₹1,000 INR in 40 days
4.9
4.9

Hello, I just finished reading your brief for "Rebuild of Educational Poultry Bioacoustics App", and I'm genuinely excited about the chance to work on it. I don’t just want to tick the boxes here; my aim is to hand you something that genuinely goes beyond what you pictured. From your brief I can see this involves logo, graphic, branding — all areas we handle in-house. We specialise in Mobile App Development, C# Programming, User Interface / IA, Software Development, which lines up directly with what you need. How we'd approach it: - Discovery to capture your brand, references and goals - Initial concepts for you to react to - Refine the chosen direction across revision rounds - Deliver source files in every format you need I also noted you don’t need copying inaccessible or proprietary third — that’s clear, and I’ll keep the work clean and strictly on-brief. Delivering at the scale of 36 compliance is no problem for us — we're set up for volume without dropping quality. Happy to work hourly with transparent time tracking and regular check-ins. You can count on tight communication, on-time delivery, and a result that’s effortless to sign off on. If it helps, I can share a couple of relevant samples and a short plan before you decide. Looking forward to it! Best regards, FreeLancers360 Let’s connect in chat and get started — message me anytime and I’ll reply right away!
₹750 INR in 5 days
4.1
4.1

Hello, I have read your job description and I am interested in your job post. I am ready to start now. Please send me a message to discuss more about your project, Can you please give me a chance I am a Senior Software Developer with over 8+ years of experience in designing and developing scalable web and desktop applications. I specialize in Microsoft technologies and delivering high-quality, secure, and performance-driven applications. My Expertise: Backend Development:ASP.NET, ASP.NET Core, MVC, Web API, WebForms, WCF Services Programming Languages:C#, Frontend Development:JavaScript, jQuery, AJAX, HTML, CSS Database Technologies:SQL Server, MySQL Reporting Tools:Crystal Reports, RDLC, SSIS, SSRS
₹750 INR in 40 days
4.2
4.2

Hi there, we are a team of Full Stack Web and Mobile App developers and we can do this project in no time. Thanks Ashish Kumar.
₹1,000 INR in 40 days
4.1
4.1

Hi there I understand this is a complete redevelopment rather than APK modification. I will rebuild the application as a clean Unity LTS project using modern architecture, recreate the UI and functionality based on the APK and provided assets, ensure Android API 36 compliance, optimize for current Play Store requirements, provide the complete editable Unity source project, documentation, signed AAB, testing APK, and assist with Play Console submission. The existing package name and signing process can be retained provided the necessary Play Console access and signing credentials are available. I estimate approximately 120 development hours depending on the complexity of the audio analysis features and the completeness of the supplied assets.
₹1,200 INR in 40 days
3.5
3.5

As an experienced Full Stack Developer, I've spent the past 5+ years helping businesses and entrepreneurs turn their ideas into reliable digital products. One particular area of expertise that aligns perfectly with your needs is my extensive experience in Mobile App Development, and specifically Android App Development. I have a deep understanding of Unity, as well as other relevant skills such as C# scripting, API development and User Interface designƒskills that would be crucial to rebuild your Educational Poultry Bioacoustics app from scratch. I understand that preserving the core purpose and recognizable elements of the birdsong app is paramount for your project. Having worked on numerous mobile applications over the years, I know just how important it is to retain brand integrity while modernizing a product. I will make sure to not only fully understand your provided assets and functionalities but also add a layer of polish in line with contemporary standards ensuring it resonates with students, researchers, and members of the public alike. In addition to possessing sound technical skills, I am adept at maintaining clear communication with clients throughout the project journey. With my breadth of experience in Software Development end-to-end, rest assured your project will receive my fullest attention to detail while building your next-gen Educational Poultry Bioacoustics app.
₹1,200 INR in 40 days
3.8
3.8

Hi, I can rebuild your birdsong app as a clean, modern Unity LTS project with complete editable source code, Android 16/API 36 compliance, Play Store–ready AAB, and full documentation while preserving the original user experience and branding
₹1,000 INR in 40 days
3.3
3.3

Hi! I can completely rebuild your birdsong app from scratch in Unity LTS, delivering a clean, maintainable codebase along with API level 36 / 16 KB page-size compliance for Google Play. Bringing 12+ years of mobile app development experience—including C# Unity engineering and legacy app rebuilds—our team will ensure pixel-accurate UI reproduction, polished audio playback controls, and smooth Play Console update submission using your existing package name. We guarantee full source code transfer, zero third-party tracking, and complete build documentation. I’m online right now—join me in chat so we can review your existing app screenshots and outline the exact rebuild schedule!
₹1,000 INR in 40 days
3.0
3.0

Rebuilding from a compiled APK reference rather than decompiling it is the right call, and it's a project I've handled before with apps where the original source was lost. I'll recreate the app as a fresh Unity LTS project targeting API 36, reproduce the core audio browsing and playback experience from your screenshots and assets, and deliver the full editable source with documentation so you can maintain it independently. One thing worth flagging early: CVE-2025-59489 affects specific Unity 6 builds, so I'll pin the project to the latest patched 2022 LTS to stay clear of that while keeping full Play Store compatibility with the 16 KB page-size requirement. 1) Do you still have access to the Play Console and the original app signing key, or will we need to set up a new signing config? Happy to talk details in chat. Shayan
₹925 INR in 40 days
2.6
2.6

Dear Client, I can rebuild your educational Unity birdsong app with a modern interface while keeping its original purpose, branding, and functionality. With 7+ years of experience in Unity and Android development, I will build a secure and editable Unity project, configure permissions correctly, optimize loading speed and battery usage, prepare Google Play compliant builds, and provide all source files, assets, documentation, and post-submission support. I can share my work links in the chat box. Looking forward to your positive response on chat box. Thanks.
₹750 INR in 40 days
3.2
3.2

With over 5 years of experience in mobile app and game development, I bring a unique combination of skill sets to your project that is both essential and advantageous for its execution. My wide-ranging expertise covers the very core requirements of your job: Unity and Android Development. I assure you that this ain't just two things stuffed into one bowl; this is seamless unity (pun intended) at work. Having worked on more than 50 mobile applications, including games, I am no stranger to the technicalities and nuances of creating engaging, user-friendly, and efficient applications that are able caters to different audiences. Everybody is already familiar with birding apps, but my specialty lies in developing educational experiences from them. Lastly, my commitment not only entails completion of tasks on time but also providing long-time support and maintenance ensuring continuous growth and durability. I believe these factors distinct me out from other candidates as they emphasize quality throughout the project lifecycle.
₹1,000 INR in 40 days
1.9
1.9

Your poultry bioacoustics app can be rebuilt in Unity with a clean project structure, keeping the same branding and educational focus. I will set up Android API level 36 compliance, optimize performance for fast loading and low battery use, and ensure permissions are handled correctly. The final delivery will include editable source code, signed bundles, and documentation for Play Store submission. Let’s arrange a Zoom or Teams call so we can review the full rebuild approach together.
₹1,000 INR in 40 days
1.1
1.1

As an experienced developer with a specialization in Android app development, I have a thorough understanding of the Unity platform and the technical requirements for your project. Drawing upon my in-depth knowledge of C# programming and game development, I am confident that I can rebuild your existing birdsong app while providing a modern, polished, and industry-friendly appearance. The redesigned app will retain its core purpose and recognizable elements while incorporating the latest best practices for security and maintainability. My team at GSINFOTECHH is known for delivering secure, scalable, and high-performance digital solutions. We have a long track record of converting ideas into powerful, market-ready products – making us well-suited to undertake this complex redevelopment task. Leveraging our skills in Android and iOS app development, custom software development, and web application development we promise to not only meet your requirements but exceed expectations. What sets us apart is not just our technical aptitude but our focus on client satisfaction. This includes transparent workflow, on-time delivery, dedicated support along with a flexible pricing approach. By hiring us, you're getting more than just an outsourced developer project; you gaining access to a zesty team of experts excited to bring your educational poultry bioacoustics app back to life! Let's discuss how we can make this project a great success together!
₹750 INR in 40 days
0.4
0.4

Hi, I understand you need a complete rebuild of the existing birdsong app as a clean Unity project, not an APK decompilation, with a maintainable codebase and a Google Play-ready release. With 8+ years of experience in Unity, C#, Android app development, and mobile application deployment, we can rebuild the app while preserving its core functionality, branding, and user experience with a modern and optimized architecture. We will create a fresh Unity project using a stable LTS version, rebuild the required screens and features from provided references, optimize performance for Android devices, implement required permissions properly, and prepare a signed Android App Bundle compatible with current Google Play requirements. Deliverables will include the complete Unity source project, assets, build files, documentation, test APK, production AAB, deployment guidance, and assistance with Play Console submission/testing. I’d be happy to review the existing app references, discuss the rebuild approach, timeline, and next steps. Regards, Vandini
₹900 INR in 40 days
0.0
0.0

Surat, India
Member since May 20, 2026
₹1500-12500 INR
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$12-30 SGD
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$8-15 USD / hour