
In Progress
Posted
Paid on delivery
The core of my cross-platform app is already in place—about 80 % of the functionality was generated with Claude and is running smoothly on both iOS and Android simulators. I now need a developer who can take it over the finish line and guide it through submission to the Apple App Store and Google Play Store. What’s left to do centres on three areas: implementing secure user authentication, wiring up a reliable in-app payment flow, and enabling push notifications. Alongside that, I’d like a fresh set of eyes on the UI/UX so the final build looks and feels fully polished before it reaches reviewers. Because store approval is the ultimate goal, the work will include building release candidates, resolving any guideline-related issues, configuring certificates/provisioning profiles, creating signed APKs/IPAs, and walking the binaries right through TestFlight, internal testing, and final production release. Deliverables • Fully tested authentication, payment, and push modules integrated into the existing codebase • Refined UI/UX based on best-practice mobile patterns and my brand guidelines • App Store and Play Store assets prepared (screenshots, descriptions, privacy labels, etc.) • Successful submission and acceptance on both stores, with hand-over of all publishing credentials and release documentation If you are comfortable jumping into an almost-finished React Native codebase (or can quickly orient yourself if it’s another framework), confident with Xcode and Android Studio, and have a track record of shepherding apps through review, let’s talk.
Project ID: 40668706
168 proposals
Remote project
Active 1 min ago
Set your budget and timeframe
Get paid for your work
Outline your proposal
It's free to sign up and bid on jobs
168 freelancers are bidding on average $6,500 AUD for this job

Hi — Elias here from Miami. I see you're nearing completion of your cross-platform app and need support to finalize and publish it. It's great to have such a solid foundation. The real challenge now often lies in ensuring the existing functionality integrates well and scaling it for future updates. Common issues include managing state effectively and ensuring a seamless user experience across devices. These aspects can seem straightforward but often reveal complexities that affect performance and maintainability. My approach would focus on enhancing the app's architecture for stability and ease of future updates. I would assess the codebase for potential bottlenecks and implement best practices for state management and user role permissions. This ensures a robust solution ready for expansion. I’ve worked on similar projects, refining workflows and implementing scalable solutions while maintaining a clear focus on user experience. A few questions to better understand the scope: Q1 – What specific integrations or features are you looking to implement before launch? Q2 – How do you envision the user roles and permissions functioning in the app? Q3 – Are there any specific performance metrics or user feedback you have in mind for the final version? Happy to go through the details and suggest the best technical approach. Looking forward to hearing from you.
$8,000 AUD in 26 days
8.4
8.4

What framework is the existing app built with, and which payment provider do you want to use? This will determine how cleanly the remaining integrations can be added. Hi, I’m from TechForge Innovations. We can audit the existing codebase first, preserve what is working, and focus the remaining effort on production readiness rather than rebuilding unnecessarily. Deliverables: • Secure authentication integration • In-app payment implementation • Push notifications • UI/UX polish and responsive fixes • Release builds, signing and certificates • TestFlight + Google Play internal testing • Store assets and submission support • Production release and handover documentation I’ll first audit the existing architecture, dependencies and generated code, then define the remaining work and risks. Share the repository and current stack, and I can provide a fixed milestone plan and timeline.
$5,000 AUD in 14 days
7.5
7.5

Hi, I reviewed the project: your cross-platform app is ~80% done and needs secure authentication, in-app payments, push notifications, and UI polish before App Store and Play Store submission. I’ll take over the existing React Native codebase and finish the required modules end-to-end, React Native integration, iPad-friendly UI/User Interface refinements, stable release candidates, and wired flows ready for signed APKs/IPAs. I’ll build release candidates, resolve guideline issues, configure certificates/provisioning profiles, and guide binaries through TestFlight and internal testing to production. Clean, responsive results with easy hand-over of publishing documentation, Let’s discuss here now.
$5,000 AUD in 30 days
7.1
7.1

We genuinely understand your needs as we are well-versed in efficiently picking up where others left off in almost-finished codebases, such as React Native. We have a substantial cross-platform track record with app development and our clients can attest to our ability to see an app through from beginning to end exactly what you need.
$10,000 AUD in 45 days
6.8
6.8

Hello!, I am a US-based senior software engineer and I’d love to help you finish and publish this app the right way. Your biggest pain point isn’t the 80% that’s already built, it’s the last 20% where apps usually break: edge cases, UI polish, testing, and store readiness. I can audit the current React Native/cross-platform build, close the gaps, fix issues, and get it ready for iOS and Android release. My approach: 1. Review what’s done vs. what’s missing 2. Fix bugs, missing logic, and UX friction 3. Polish the UI so it feels consistent and complete 4. Test on real devices and prep for App Store / Google Play submission 5. Support launch until it’s live I’m detail-oriented and won’t just “finish code” and disappear. I make sure the app is stable, clean, and genuinely ready for users. Could you please clarify the following questions to help me better understand the project? 1. What parts of the remaining 20% are most important: features, UI polish, bug fixing, or publishing? 2. Do you already have TestFlight / internal testing set up, or should I handle release workflow too? 3. Are there any must-keep integrations, auth flows, or store requirements I should preserve exactly? Relevant work I’ve handled includes FitTrack Pro, LocalLoop Delivery, GreenMint Health, and StudyNest Mobile. If you want someone who will treat this as a real launch and not just a code cleanup, I’m your guy. James Zappi
$8,000 AUD in 19 days
6.4
6.4

Hi I can help take your existing React Native application from its current stage to a production-ready release on both the Apple App Store and Google Play Store. I understand that the core functionality is already built, so my focus will be on completing the remaining critical modules, improving quality, and preparing the app for successful store approval. I can integrate secure authentication, reliable in-app payments, push notifications, and refine the UI/UX to ensure a polished final experience. I have experience with React Native, iOS and Android development, API integrations, authentication systems, payment workflows, push notifications, Xcode, Android Studio, TestFlight, and Play Store release processes. I can review the existing codebase, fix any issues, configure certificates and signing, prepare store assets, and guide the application through submission. My approach is to preserve what is already working, improve where needed, and deliver a maintainable app with complete release documentation. I would like to review the current codebase, framework setup, backend services, and remaining requirements to define the final steps. Best, Justin
$7,500 AUD in 30 days
6.3
6.3

Hello, I’m Stefan from WebAIProTech, based in Australia. I can take over your existing cross-platform app, review the current codebase, and finish the remaining production work without unnecessarily rebuilding what already works. I can implement secure authentication, in-app payments, push notifications, and polish the UI/UX across iOS and Android. I can also handle the full release process including Xcode, Android Studio, certificates, provisioning, signed IPA/APK builds, TestFlight, Play Console testing, store assets, privacy requirements, and final submissions. I’m available to start immediately and can work directly from the existing codebase. Best Regards, Stefan
$10,000 AUD in 30 days
6.3
6.3

Hi, I have great experience with Claude. Let's discuss and finish and upload to store without rejection. Your app is already 80% complete, so the priority is finishing the remaining production-critical pieces without disturbing the working codebase. I’ll implement secure authentication, in-app payments, and push notifications, then polish the UI/UX and run a full release QA pass. After that, I’ll handle signing, certificates, TestFlight/Play Internal Testing, store compliance fixes, and final submission. My relevant experience includes mobile authentication, StoreKit/in-app purchases, Firebase notifications, and App Store/Google Play production releases. Share the current codebase and remaining issue list, and I can map the fastest path to launch.
$7,500 AUD in 25 days
6.2
6.2

Hello there, Hope you are doing well I can take your existing 80% complete cross-platform application and bring it to production without unnecessarily rebuilding what already works. I’ll first audit the current codebase, identify remaining gaps, then implement, test, polish, and prepare the app for successful iOS and Android release. Key Features & Work Scope Audit and understand the existing React Native/codebase Secure user authentication and session management Reliable in-app payment integration Push notifications with proper device/token handling UI/UX review and visual refinement Bug fixing and performance optimization iOS and Android release configuration Apple certificates & provisioning profiles Android signing configuration TestFlight and Google Play internal testing App Store / Google Play compliance checks Store screenshots, descriptions and required assets Privacy information and permissions review Production release builds: IPA/AAB Final submission and review issue resolution Complete source-code and deployment handover Recommended Tech Stack Mobile: React Native iOS: Xcode / Swift integration where required Android: Android Studio / Kotlin integration where required Authentication: Firebase Auth / Supabase Auth or existing backend Thanks & Regards Dheeraj K.
$5,000 AUD in 25 days
7.0
7.0

Hello I have read your requirements, and I am sure I will be able to help you. Please message me so that we will have detail technical discussion. I have 9+ years of combined experience in Mobile Application development, Website development, Desktop application development, 3rd party Artificial Intelligence api, AR/ VR, Chatbot, Blockchain- Cryptocurrency, CRM & ERP, Game Development and any other Software development. I am having expertise in Native on Android Java, kotlin and IOS Swift, and For Hybrid Cross platform on Flutter Dart & React- Native, and for web and backend on react js and node js, Python Django. Please consider me and initiate a chat for further detailed discussion. Regards, Anju
$5,000 AUD in 45 days
6.6
6.6

Hi, Taking an 80% complete AI-assisted mobile app through production is exactly where careful engineering matters most. I can take ownership of the existing codebase, audit what Claude generated, preserve the working functionality, and focus development on the remaining production and publishing requirements. I’ll first review architecture, dependencies, native iOS/Android configuration and existing security issues. From there I’ll complete secure authentication, in-app payments, push notifications, UI/UX refinement and device-level testing. I’m comfortable with React Native, Xcode, Android Studio, TestFlight and Google Play internal testing, including certificates, provisioning, signing, privacy declarations and store-review troubleshooting. I also use AI coding tools in development, but every generated change is reviewed, tested and validated rather than assuming generated code is production-safe. I’ll handle release builds, store assets/configuration, submission, review fixes and final handover under your Apple/Google accounts.
$5,900 AUD in 24 days
6.1
6.1

Hi We can take over your existing cross-platform app, quickly understand the current codebase, and take it through the final development, testing, and App Store/Google Play submission stages. Our focus will be on completing and thoroughly testing the remaining core functionality: * Secure authentication, including proper session handling and validation * Reliable in-app payment integration and transaction testing * Push notifications with appropriate device/permission handling * UI/UX refinement to ensure a polished, consistent experience across iOS and Android * Code review and fixes across the existing React Native codebase We’ll also handle the complete release process, including Xcode/Android Studio configuration, certificates and provisioning profiles, signed IPA/APK/AAB builds, TestFlight, Play Console internal testing, store assets, privacy information, and submission requirements. Most importantly, we’ll work through any App Store or Google Play review issues that arise and make the required adjustments until the production releases are successfully approved. We’re comfortable taking over partially completed AI-generated code and turning it into a stable, production-ready application. We can start by reviewing the existing codebase and providing a clear assessment of what remains, along with a practical completion plan. Infineosoft
$7,000 AUD in 30 days
6.0
6.0

Hi, I’ve carefully reviewed your requirements and understand that the application is already around 80% complete, and you need an experienced developer to take over the existing cross-platform codebase, complete the remaining production-critical functionality and successfully guide the app through Apple App Store and Google Play Store submission. I have 7+ years of experience with React Native, iOS/Android development, authentication, payment integrations, push notifications and production releases, including working with existing codebases rather than rebuilding unnecessarily. For the release process, I’ll handle release configuration → certificates/provisioning → signed Android/iOS builds → TestFlight → Google Play internal testing → store asset preparation → guideline checks → submission → review issue resolution → production release. The development will follow Codebase audit → Authentication → Payment → Push notifications → UI/UX refinement → QA → Release candidates → TestFlight/Play testing → Store submission → Review fixes → Production launch → Handover. I have already worked on React Native applications, API/payment integrations and App Store/Google Play release workflows, and I’m comfortable taking ownership of the final stage from an existing development team or AI-generated codebase. PLEASE INITIATE CHAT SO I CAN SHARE MY RELEVANT REACT NATIVE, PAYMENT, PUSH NOTIFICATION AND APP STORE/PLAY STORE PROJECTS. Best Regards, Nikita Gupta
$5,000 AUD in 25 days
6.0
6.0

Hi there, We understand you need a developer to finalize your cross-platform app, which is about 80 complete, and guide it through submission to the Apple App Store and Google Play Store. The remaining work involves implementing secure user authentication, setting up a reliable in-app payment flow, and enabling push notifications, alongside refining the UI/UX for a polished final build. With our experience in React Native and mobile development, including successful submissions to both the App Store and Google Play Store, we're confident in our ability to complete your project. We've worked on similar projects, such as a music voting mobile app using React Native and a furniture store mobile shopping app with Flutter. Our team has a strong background in iOS and Android development, ensuring a smooth process from building release candidates to final production release. One question: Are there any specific brand guidelines or design preferences you'd like us to follow while refining the UI/UX? Feel free to message us to discuss the details! — Webbook Studio
$7,000 AUD in 30 days
6.1
6.1

I am excited about the opportunity to help you complete and publish your mobile app. With 80% of the functionality already in place, I can focus on implementing secure user authentication, a reliable in-app payment flow, and enabling push notifications. I understand the importance of a clean, user-friendly interface that aligns with your brand guidelines to ensure a polished final product. I have extensive experience with React Native, Xcode, and Android Studio, along with a proven track record of guiding apps through the submission process. I will ensure that all deliverables, including fully tested modules and App Store assets, are meticulously prepared for a successful launch. Feel free to reach out, I would be happy to chat about your project, budget, and timeline. Kind Regards, Desmond.
$5,000 AUD in 14 days
5.7
5.7

Hi, Mateo here, from Toronto, to help you. Auth, payments, and push are exactly the three areas where an AI-generated codebase tends to have the most gaps, since they require real credentials, platform-specific configuration, and edge-case handling that's hard to fully stub out in a simulator, so I'd start by auditing how much of that groundwork is genuinely in place versus scaffolded. I'd implement secure authentication, wire up a tested in-app payment flow, add push notifications, then do a UI/UX pass against your brand guidelines before moving into release prep, certificates, provisioning profiles, signed builds, and store assets, then shepherd both binaries through TestFlight, internal testing, and final review. Comfortable orienting quickly in an existing React Native codebase and experienced with the App Store/Play Store submission process end to end. Is the payment flow meant to support one-time purchases, subscriptions, or both, since that affects how deep the store-specific IAP integration needs to go? Looking forward to working with you.
$5,200 AUD in 16 days
5.8
5.8

As a seasoned developer with over 5 years of experience, including mobile app development using React Native, your project is right up my alley. My expertise in React Native, Xcode, and Android Studio specifically aligns with the needs outlined in this project - secure user authentication, reliable payment flow, push notifications - not to mention my capability in revamping the UI/UX based on best mobile patterns. Having worked on numerous applications, I understand the importance of thorough testing and adherence to guidelines for store approval. From building release candidates to navigating TestFlight and ensuring final production release, I am equipped to handle every aspect of the publishing process. Plus, my proficiencies in API integration and database management will contribute positively toward your goal of a fully functional and polished app. Pairing these technical skills is my commitment to clean code, efficient delivery, and clear communication. I aim not just to meet your expectations but also exceed them. Let's collaborate to transform your already solid codebase into an exceptional, ready-for-release product that demonstrates the full beauty of your great idea!
$7,500 AUD in 7 days
5.4
5.4

Hi there, I’d be excited to build your Arabic-first Gulf dating MVP for iOS and Android, starting with Saudi Arabia and keeping the architecture ready for GCC expansion. I recommend Flutter + Node.js + PostgreSQL, with scalable APIs, real-time chat, subscriptions, admin dashboard, and a marketing website. The MVP will cover swipe/matching, the rule that the person accepting the match starts the conversation, Arabic/English RTL support, premium features, reporting/blocking, privacy controls, and AI-assisted matching, profile assistance, and moderation. I’ll focus heavily on RTL Arabic UX, Gulf-specific onboarding, secure authentication, moderation, privacy, and App Store/Google Play compliance. AI and payment integrations will remain modular for future expansion. Target timeline: 10–12 weeks, subject to the final RFP scope. I’ll provide a fixed-price proposal after reviewing the RFP, including third-party costs, warranty, and support. I’m looking to build this as a long-term scalable product, not simply a Tinder clone. Looking forward to reviewing the RFP. Thanks.
$5,800 AUD in 25 days
4.7
4.7

Since the app is already ~80% functional and running on both simulators, I’d start with a codebase audit and preserve what already works rather than rewriting Claude-generated sections unnecessarily. My two priorities would be clean implementation and integrations. I’d harden authentication, payment flows, push notifications, error handling, and environment/config management, then run device-level testing to catch issues simulators can miss. That reduces regression risk and improves the chances of passing App Store and Play review without repeated rejection cycles. I’m comfortable taking over an existing React Native codebase, working through Xcode and Android Studio, configuring signing/provisioning, TestFlight, Play internal testing, privacy disclosures, store assets, and release builds. I’d also review the UI/UX for navigation consistency, loading/error states, spacing, accessibility, and platform-specific patterns so the final product feels intentional rather than merely functional. A relevant example is Mohollla, where I worked on a multi-app retail ecosystem with customer, shop-owner, and driver applications that were released on both the Play Store and App Store and used in production.
$7,500 AUD in 7 days
4.4
4.4

Hi - Truong here >>>>>>>>>> "MOBILE APP STORE RELEASE" — you need the final steps completed and approved on iOS and Android. I can take over your existing React Native app, review the current code, complete authentication, payments, and push notifications, then prepare stable release builds. I will check the current implementation carefully because AI-generated code often needs extra attention around security, edge cases, and app store requirements. I will focus on getting the app ready for approval: polishing UI/UX, testing real device flows, preparing certificates, fixing release issues, and making sure the handover is clean with your publishing accounts under your control. Which authentication system and payment provider are already integrated, and what parts are still missing or causing issues before submission? Looking forward to working with you.
$5,000 AUD in 12 days
4.2
4.2

Melbourne, Australia
Payment method verified
Member since Aug 24, 2026
$250-750 USD
€250-750 EUR
₹37500-75000 INR
₹12500-37500 INR
₹37500-75000 INR
₹600-1000 INR
£20-250 GBP
£250-750 GBP
₹1500-12500 INR
min $100000 CAD
₹1500-4000 INR / hour
₹75000-150000 INR
₹1500-12500 INR
€30-250 EUR
₹600-1500 INR
$250-750 USD
$15-25 USD / hour
₹12500-37500 INR
$2-8 USD / hour
$25-30 AUD / hour