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# Senior Native iOS & Android Developer Required for Existing App Technical Audit We have an **existing live mobile application available on both iOS and Android** and are looking for a highly experienced **Native Mobile App Developer / Architect** to perform a complete technical audit. This is **not a new app development project**. We want an independent expert to review our existing application, source code, backend/API integration and overall architecture before we hire a full-time developer for ongoing development. ## Required Expertise You must have strong professional experience in: * Native Android — **Kotlin / Java** * Native iOS — **Swift / Objective-C** * REST APIs and backend integration * Push notifications * App performance optimization * Crash/debugging analysis * App security * Git/GitHub * Google Play Store & Apple App Store deployment * Maintaining and improving existing production applications Experience with React Native/Flutter is welcome, but **strong Native Android and iOS experience is mandatory.** ## Scope of Audit We want you to: 1. Review the complete Android and iOS source code. 2. Review overall app architecture and code quality. 3. Identify bugs, technical debt and poorly implemented areas. 4. Check app performance, loading speed and image handling. 5. Review API/backend integration. 6. Review security and handling of credentials/API keys. 7. Check crash handling, logging and analytics. 8. Review push notification implementation. 9. Review scalability for a growing inventory and user base. 10. Review App Store/Play Store build and deployment setup. 11. Identify outdated libraries/dependencies and potential risks. 12. Advise whether we should continue with the existing native architecture or consider any architectural changes in the future. 13. Provide recommendations for ongoing development and maintenance. ## Deliverables At completion, we require a **written technical audit report** containing: * Critical issues * High-priority issues * Medium/low-priority improvements * Security concerns * Performance issues * Code-quality assessment * Architecture assessment * Estimated effort required to fix major issues * Recommended development roadmap * Overall health score of the existing application We also require a video/online meeting after the audit to explain the findings. ## Important Please apply only if you have **real professional experience maintaining production Native Android AND iOS applications**. In your proposal, please provide: * Years of Native Android experience * Years of Native iOS experience * Apps you have personally worked on * App Store / Play Store links where possible * Your experience auditing existing codebases * Whether you personally perform the audit or delegate it * Estimated time required for the audit Please begin your proposal with the words **"NATIVE AUDIT"** so we know you have read the complete requirement. **We may offer long-term development work to the right expert after the audit.**
Project ID: 40663467
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59 freelancers are bidding on average ₹24,869 INR for this job

Hello Client, Greeting of the day!!!! I read your job description. I can do this job with quality product. I am always available for your support. Thanks
₹25,000 INR in 15 days
6.7
6.7

NATIVE AUDIT Hi, I’m a Senior Native iOS Developer with 8+ years of experience in Swift, UIKit, REST APIs, Firebase, push notifications, performance optimization, debugging, security, Git/GitHub and App Store deployment. * Native iOS: 8+ years * Native Android: 2+ years * Apps worked on: Multiple production mobile applications * App Store / Play Store: Can provide relevant links upon request * Codebase Auditing: Experienced in reviewing existing production codebases, architecture, APIs, performance, crashes, dependencies and technical debt * Audit: I personally perform the audit; no delegation * Estimated Time: 2–4 business days, depending on codebase size I can provide a detailed audit report with critical issues, security/performance concerns, architecture assessment, estimated fixing effort and a recommended development roadmap, followed by a video call to explain the findings. I’m available to start immediately.
₹25,000 INR in 7 days
5.5
5.5

"NATIVE AUDIT" With over 7 years of professional experience in native Android, I have built a strong foundation in understanding the overall architecture, app performance optimizations, crash and debugging analysis, security and backend integration. Reviewing an existing production app is something that I specialize in. As an advocate for clean and scalable code, I believe that my skills align directly with your project needs. I have a track record of delivering high-quality Android applications that not only meet business requirements but provide a seamless user experience as well. My technical expertise includes Kotlin/Java, REST APIs integration with modern Android libraries such as Retrofit, OkHttp, Jetpack Libraries (ViewModel, LiveData, Navigation), Firebase (Authentication, Firestore, Realtime DB, FCM Push Notifications), among others. As someone who understands the importance of reliability and stability in long-term projects, I assure you of my commitment to providing you with a comprehensive technical audit report on all aspects highlighted in your project descriptions, including detailed information on critical issues identified as well as high-priority improvements suggested. Alongside this audit report, I'll produce a recommended development roadmap based on the findings and an overall health score for your app. Together we can ensure your existing app is set up for continued success and possible architectural changes if required.
₹25,000 INR in 7 days
5.5
5.5

**NATIVE AUDIT** Since this is an existing production app, I would approach this as a **codebase and architecture audit—not a redevelopment project**. I’ll review Android and iOS independently, then trace their shared API/backend dependencies to identify issues that affect both platforms. I have **5+ years of software development experience** and hands-on experience with **Kotlin/Java, Swift, APIs, Firebase/push notifications, databases, Git, debugging, and production app deployment**. I have completed **41 projects with a 5-star rating**. I will personally review: * Native Android & iOS architecture/code quality * Crashes, performance & memory/image handling * API integration and error handling * Security, credentials and dependencies * FCM/APNs implementation * Build/signing & store deployment setup * Technical debt and scalability risks You’ll receive a **prioritized technical report, health score, estimated remediation effort, development roadmap**, followed by an online walkthrough. **Estimated audit:** 5–7 working days after receiving both repositories and backend/API documentation. Can you also provide access to **Crashlytics/analytics and recent production crash logs** for the audit? Regards, **Mehboob Katiyar**
₹25,000 INR in 7 days
5.5
5.5

Hello, I can create/modify the app/web as you wish. I have 7+ years of experience in this field. Let's connect and discuss more about your requirements. Thank you.
₹23,000 INR in 10 days
5.1
5.1

NATIVE AUDIT: With over 8 years in the field, I am a seasoned Full Stack Developer and an AI Solutions Expert with a strong focus on mobile app development in both Native Android (X years) and Native iOS (X years). Moreover, I've had the privilege of being personally involved in the development and maintenance of more than 200 successful projects, a part of which are available on App Store/Play Store. Needless to say, my correspondingly vast expertise encompasses Kotlin, Java, Swift, Objective-C, REST APIs, Push Notifications, Crash/Debugging Analysis etc - exactly what you're looking for! By selecting me for your project, you can rightfully expect an objective evaluation of your application's health along with an actionable list of concerns. My final report will detail the critical issues, high-priority improvements, code quality & architecture assessment along with necessary steps required to fix any glitches found. Whether we continue with the existing native architecture or consider architectural changes - I'll furnish you with all the information needed to chart a roadmap for ongoing development. Let's connect for a fruitful discussion today!
₹17,500 INR in 7 days
4.9
4.9

NATIVE AUDIT Hello, I am interested in performing the technical audit of your existing production app. I have 10+ years of mobile development experience, with strong hands-on experience in Native Android (Kotlin/Java) and experience working with iOS/Swift, along with Flutter, REST APIs, Firebase, push notifications, performance optimization, debugging, security, and store deployment. I have personally worked on production applications including LadyFair, Yasko Dental Hospital, Egg & Broiler Rates, TogoLink, and Inflyx-Influencer Platform, along with several other mobile projects. I can personally review the Android and iOS source code, architecture, API integration, dependencies, security, performance, crash handling, notifications, and deployment setup. I will provide a structured audit report with critical/high/medium/low issues, overall health score, estimated effort, and a practical development roadmap, followed by a meeting to explain the findings. I do not delegate the audit. I will personally review the code and provide an independent assessment. Depending on the codebase size, I would expect the audit to take approximately 3–5 working days for each platform. I would be happy to discuss access to the repositories and get started.
₹20,000 INR in 10 days
4.9
4.9

NATIVE AUDIT For an existing live iOS/Android product, I’d begin by reproducing both builds locally, mapping the architecture and API flow, then auditing code quality, security, crashes, push notifications, dependency health, performance, and release configuration before recommending any architectural change. My two priorities would be clean implementation and maintainability. I’d review Kotlin/Java and Swift/Objective-C code paths, credential handling, REST integration, image/cache behaviour, logging/analytics, threading, memory use, outdated SDKs, Git structure, signing, and App Store/Play Store deployment. Findings would be ranked Critical / High / Medium / Low with fix effort, risk, health score, and a practical roadmap. I personally perform the audit rather than delegating it. Estimated audit time: 4–6 business days, followed by the written report and review call. A relevant production mobile project is Moholla, a multi-app marketplace ecosystem with customer, shop-owner, and driver apps that are live on both Play Store and App Store. I won’t invent Native Android/iOS years or store URLs that I cannot verify from current project records; those should be supplied exactly from verified work history rather than guessed.
₹25,000 INR in 7 days
4.4
4.4

NATIVE AUDIT Hi, We can perform a complete technical audit of your existing iOS and Android applications, covering both source code and the production setup. We can deliver the audit for ₹25,000 within 6 days. Audit scope: • Native iOS (Swift/Objective-C) code review • Native Android (Kotlin/Java) code review • Architecture and code-quality assessment • REST API/backend integration review • Performance and memory analysis • Crash handling, logging and analytics • Push notification implementation • Security, credentials and API-key handling • Dependency/library and version review • Git/build and deployment configuration • App Store and Google Play readiness • Scalability and technical-debt assessment Deliverables: • Detailed technical audit report • Critical/high/medium/low priority findings • Security and performance issues • Architecture and code-quality assessment • Estimated effort for major fixes • Recommended development roadmap • Overall application health score • Review meeting/video walkthrough We have experience shipping and maintaining production mobile applications, with 12+ apps live across the App Store and Google Play. The audit will be performed directly by our development team rather than delegated.
₹25,000 INR in 6 days
4.1
4.1

"NATIVE AUDIT" Thank you for considering me, Mahad Sheikh, for your Native App Technical Audit project. With over a decade of professional experience in Native Android and iOS Development, I am equipped with the requisite skills and expertise to conduct a comprehensive, in-depth audit of your live mobile application. Having worked on various complex projects, I have gained vital knowledge in REST APIs, backend integration, push notifications, performance optimization, crash debugging analysis, security enhancement, Git/GitHub version control, and deploying apps on both Google Play Store and Apple App Store. My previous work includes mentoring teams on code quality improvements as well as rectifying technical debt issues. Hence my capability to identify potential risks including outdated libraries/dependencies. I personally perform all audits to ensure a hands-on approach to each task at hand while providing an objective assessment of key areas like code quality, architecture efficiency, overall application health and more. In the final deliverables, I not only provide detailed issue reports but also prioritize them for your convenience. This would include a recommended development roadmap that takes into account any architectural changes which could improve your app's future-proofing plus the correlating estimated effort required.
₹12,500 INR in 5 days
4.2
4.2

NATIVE AUDIT This should be handled as an independent engineering assessment, not a surface-level code review. I would audit the Android and iOS applications separately, then trace the shared backend/API, authentication, notifications, analytics, and deployment dependencies to identify risks across the full production system. My review would cover architecture, code organization, dependency health, API usage, threading/concurrency, memory and image handling, crash reporting, push notifications, credential storage, logging, build configurations, signing, and App Store/Play Store release setup. I would also inspect performance-sensitive user flows and classify findings by severity: critical, high, medium, and low. Each issue would include the technical reason, impact, recommended fix, and relative effort. The final report would include an overall application health assessment and a practical roadmap for stabilization and future development. I would personally perform the audit rather than delegate it, and I can walk your team through the findings in a technical review call afterward. Before starting, I would need repository access, backend/API documentation, crash analytics where available, and the current production app links. Are the Android and iOS apps using the same backend/API and feature set, or have the two native codebases diverged over time?
₹15,000 INR in 3 days
4.2
4.2

NATIVE AUDIT Hello, I read your requirement for an independent technical audit of the existing live iOS and Android applications. I have 6 years of mobile development experience with Flutter, along with hands-on experience with native Android (Kotlin/Java) and iOS (Swift). I’ve worked on production applications, API integrations, Firebase, push notifications, performance optimization, crash debugging, security, and both App Store and Google Play deployments. I’m comfortable auditing an existing codebase myself rather than delegating the work. I can review the Android/iOS architecture, dependencies, API integration, security, notifications, performance, logging, build configuration, and overall maintainability. The final report can clearly separate critical, high, medium, and low-priority findings, with recommended fixes, estimated effort, and a practical roadmap for future development. I can share relevant production apps and store links from my portfolio. Estimated audit timeline: 1–2 days after receiving the source code and required access. Best Regards, Ravina
₹25,000 INR in 7 days
4.0
4.0

As an experienced Full Stack Developer with over 5 years in the industry, including significant Native Android and iOS experience, I have the necessary background to successfully undertake your Native App Technical Audit. I have worked on numerous mobile applications, thereby gaining deep insights on their architectural designs, source codes, backend integration, and deployment setups. My skills span across Kotlin, Java, Swift, Objective-C, Git/GitHub, API development and more — all the components you are seeking expertise for in this project. I understand that this audit requires a precise assessment of the app's performance in various aspects that include security concerns, scalability capacities and overall code quality. You can entrust me with these tasks as I'm experienced in reviewing existing codebases and detecting critical issues that may affect not only the app's functionality but its commercial viability as well. My ultimate goal is to provide you with granular reports detailing critical issues regarding code quality, security standards or outdated dependencies believed to be risky while proposing effective fixes and providing an overall path forward estimation. It is crucial to stress that the audit must be conducted by someone who truly knows what they’re doing - a responsibility I want to personally take up. Your satisfaction is my priority. Let's connect and discuss further in the chat!
₹15,000 INR in 7 days
3.9
3.9

I will thoroughly review your existing mobile application’s source code and overall architecture to identify critical issues and areas for improvement. My first step will be to assess the backend/API integration to ensure everything is functioning optimally. Based in Toronto, I work efficiently and remain available for any questions or discussions throughout the process.
₹12,500 INR in 3 days
3.3
3.3

NATIVE AUDIT: As an experienced Native Android and iOS developer, I am well-positioned to conduct a thorough technical audit of your existing live mobile application. My focus on code quality, performance optimization, and app security aligns perfectly with the scope of the project you've outlined. Through my previous work, I have demonstrated a keen eye for identifying bugs, tackling technical debt, and implementing effective solutions for scalability. In line with your requirements, I have strong expertise in REST API integration, push notifications, Google Play Store, and Apple App Store deployment. Besides my proficiency in Kotlin/Java/Swift/Objective-C, I am open to embracing relevant technologies like React Native/Flutter to deliver comprehensive insights during the audit process. The understanding I offer extends beyond the assessment itself - I'm adept at explaining complex technical aspects in clear terms with personalized recommendations.
₹12,500 INR in 7 days
3.4
3.4

NATIVE AUDIT Hello! I'm Karthik, a seasoned developer with over 15 years of experience in Native Android (Kotlin/Java) and iOS (Swift/Objective-C) app development. I have successfully maintained and optimized numerous production applications and have a solid understanding of REST APIs, app performance, security, and deployment processes on both Google Play Store and Apple App Store. I will perform a thorough technical audit of your existing app, focusing on: - Source code quality and architecture - Bug identification and technical debt - Performance metrics and security assessments - API integration and scalability for future growth Deliverables will include a comprehensive audit report with prioritized issues, a health score, and a recommended development roadmap. I will personally conduct the audit to ensure accuracy. I estimate the audit will take approximately 3-5 days to complete. I’m ready to discuss my previous projects and provide links to apps I've worked on. Looking forward to helping you enhance your app! Best, Karthik
₹25,000 INR in 7 days
3.1
3.1

NATIVE AUDIT Most native audits miss the same thing: the Play/App Store signing and provisioning setup, which quietly blocks the next developer from shipping on day one. I'll review both codebases (Kotlin and Swift), API layer, keychain/keystore handling, crash and push setup, then deliver the written report with health score and roadmap, plus a walkthrough call. I personally perform audits, no delegation. 1) Is the backend in scope, or Android and iOS repos only? 2) Which crash tool is wired in, Firebase Crashlytics or Sentry? Cheers Shayan
₹21,250 INR in 3 days
2.8
2.8

NATIVE AUDIT Hello, I have 3 years of hands-on Native Android development experience with Kotlin, including Jetpack Compose, Hilt, Room, Coroutines/Flow, REST API integration, Firebase, authentication flows, debugging, performance considerations, and maintaining structured Android codebases. My strongest expertise is on the Android side. I want to be transparent that I do not have equivalent professional Native iOS/Swift experience, so I would not claim to independently perform a complete iOS audit at the same level. For Android, I can personally review architecture, code quality, technical debt, API integration, dependency risks, credential handling, performance, crash/logging setup, build configuration, Play Store readiness, and provide a prioritized technical report with remediation estimates and a development roadmap. I have worked on production-oriented Android applications including data-collection systems and Kotlin-based mobile platforms. My repositories are private, but I can provide a PDF portfolio showing my projects and technical contributions. If you are open to splitting the audit between an Android specialist and an iOS specialist, I would be very interested in handling the Android portion and supporting the final technical assessment.
₹12,500 INR in 7 days
1.9
1.9

Hello, I’m Bhargav, and I bring over 10 years of experience in matching job skills, particularly in Java and Android. My expertise aligns perfectly with the requirements of your Native App Technical Audit. I understand your need for a thorough examination of your existing mobile application on both platforms. I will conduct a complete review of the source code, back-end integration, and overall architecture, identifying critical issues, performance bottlenecks, and security aspects to provide you with a comprehensive audit report and actionable recommendations. Let’s start a chat to discuss how we can move forward seamlessly. Best regards, bhargav922002
₹26,250 INR in 3 days
1.2
1.2

NATIVE AUDIT The hidden risk in your current build is the mix of legacy SDKs that often trigger crashes after OS updates. I’ll clone both iOS and Android repos, run static analysis tools, and profile launch times on real devices to spot performance bottlenecks. Then I’ll compare your API handling against the latest Swift and Kotlin guidelines to catch any unsafe credential storage. A common mistake I see is relying on default crash logs instead of attaching a custom handler that records device state before termination. By adding a lightweight logger and reviewing the existing analytics setup, you’ll get clear insight into the root causes of freezes and crashes. The audit will deliver a prioritized list so you can fix critical bugs now and plan a clean roadmap for future growth.
₹25,000 INR in 4 days
0.0
0.0

Balicha, India
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