React Native Mobile App Bug Fixes, Feature Development & App Store Launch

@a4logic

Hello, With over a decade of experience in JavaScript and Mobile App Development, my team and I at A4Logic have honed our abilities to handle the most complex of projects. In fact, we've been specially sought after to complete and rescue existing codebases - your project description resonated very strongly with us. We understand the crucial importance of bug fixes, optimization and UI enhancements in delivering a polished app and we have a proven track record in all these areas. Additionally, our expertise in employing Firebase for efficient authentication, push notifications and other features you require is unparalleled. We've also successfully integrated numerous REST APIs and Payment Gateways over the years, adding prowess to an already diverse skill set that includes knowledge of React Native, Node.js, Firebase, Redux, Git android and iOS. Our values align neatly with your required outcomes: we focus on clear milestones, practical recommendations and maintainable deliveries while ensuring fast response, careful testing and long-term support. We know that launching on both Google Play and the Apple App Store can be a daunting task but rest assured our team possesses necessary publishing expertise. Overall, our 5.0 rating on completion of almost 500 projects is testament to our capabilities. Should you choose us for your project, we promise not just commitment to excellence but care in every step , starting from promptly revie Thanks!

@ykarora26

With hands-on experience in React Native, Node.js, and Firebase, our team specializes in completing, maintaining, and reviving mobile applications. Could you share more details about the current challenges you're facing to help us better understand the scope of work needed for your project? Regards, Yogesh Kumar

@ozbas

❤️❤️❤️ Greetings ❤️❤️❤️ I have reviewed your React Native Mobile App project and I can help finish, stabilize, test, and publish the existing application rather than rebuilding it from scratch. I am Ozgur Ozbas, a Full-Stack Mobile Developer with 10+ years of experience in React Native, Flutter, Node.js, Firebase, REST APIs, authentication, push notifications, payment integrations, Android, and iOS. I can take over the existing codebase, reproduce and fix current bugs, optimize performance, improve UI issues, resolve Firebase/API/authentication problems, configure push notifications and payment flows, and thoroughly test the application before release. I can also handle the final Android/iOS build configuration and assist with Google Play and Apple App Store submission. Q1. Is the current React Native project already building successfully on both Android and iOS, or are there build/configuration issues that need fixing first? Q2. Do you already have a complete bug/task list, or would you like me to audit the existing codebase and prepare a prioritized list of remaining issues? I am comfortable working with existing codebases and can provide clear Git commits, regular progress updates, and release documentation. Looking forward to reviewing the project and getting it production-ready. Best regards, Ozgur Ozbas

@kabirchy

Hi there, I’ve reviewed your project and understand you need a reliable React Native developer to finalize your app, fix bugs, optimize performance, and prepare it for App Store launch. I’ve successfully delivered multiple React Native apps from 70% to 100% completion, including bug resolution, UI refinements, and performance tuning using native modules and efficient state management. I’ll ensure clean, maintainable code with proper error handling and memory optimization. I’ll also assist with App Store Optimization (ASO) basics—title, description, keywords, and metadata—to improve visibility. My approach includes thorough testing on both iOS and Android devices, along with debugging tools like Flipper and React Native Debugger. I can deliver the final build within 10 days, ready for submission. Let’s connect to discuss specifics and move forward. Best Regards, Khorshed Alam, RS Software

@ahmadayaz

Harnessing our expertise in React Native, Node.js, Firebase, REST APIs, Redux, and more, we are well-equipped to address bug fixes, performance optimization, UI enhancements, Firebase issues, API integrations, and authentication fixes for your mobile application. Our experience includes push notifications, payment gateway integration, rigorous testing, and successful deployments on Google Play and the Apple App Store. Our track record in troubleshooting, performance optimization, and ensuring seamless functionality distinguishes us in delivering top-notch mobile applications. We prioritize scalable solutions, robust security measures, maintainable codebase, and user-centric designs for an enhanced user experience. To tailor our solutions to your long-term objectives and scalability requirements, we would appreciate insights into any future features you envision for the application. Our commitment to quality, timeliness, and ongoing support positions us as the ideal partner for successfully completing this project and facilitating your future digital endeavors. We are eager to further discuss the project and explore how we can contribute to its success.

@crtvecode

It sounds like you're at a critical stage with your mobile application, particularly with Firebase issues and API integration. I understand the importance of ensuring seamless communication between your app and backend services, especially when it comes to user authentication and push notifications. I can dive into the existing codebase to identify and resolve these Firebase-related challenges while optimizing API calls for better performance. In addition to fixing bugs and enhancing UI, I'll also focus on ensuring a smooth deployment process for both Google Play and the Apple App Store, which can often be tricky due to differing requirements. This includes comprehensive testing to ensure everything functions as expected before launch. Could you clarify if there are specific Firebase features or functionalities that are currently problematic, or are you looking for a general audit and fix? Looking forward to your response. Rajavel React Native Developer | Firebase | API Integration

@SBITServices

Hi, I can take over your existing React Native app and complete the remaining 20%. I'll fix the bugs, improve performance and UI, resolve Firebase and authentication issues, complete API and payment integration, test everything thoroughly, and handle both Google Play and App Store submissions. We've spent 10+ years working on web and mobile applications and are comfortable taking over existing codebases. I'm happy to review your current project and share a clear action plan before we begin. Thank you. Regards, Sai

@Web1devloper

From my extensive experience with mobile app development, there isn't a task on your to-do list that I haven't tackled before. Having worked as a React Native developer for the past 5 years, I've not only built but also maintained apps like yours across multiple industries, including e-commerce and healthcare. In fact, I specialize in restructuring and improving existing codebases in order to achieve optimum performance - something your project requires. I'm versed in Firebase and know how to seamlessly integrate it with APIs and backend systems using Node.js, granting me the capability of sufficiently handling your Firebase issues. Additionally, my experience with Redux will come handy for efficiently dealing with authentication fixes and payment gateway integration. With me on board, you can be confident in receiving on-time deliveries of high-quality code - a necessary ingredient for any successful app launch. Finally, client satisfaction and effective communication remain at the heart of my professional ethos. I promise to keep you engaged throughout the development process and provide regular updates on progress made. I believe this level of transparency coupled with my technical expertise is the combination you need to turn your 80% complete project into a successful app store reality. Let's connect so I can bring your ideas to life!

@offshore9006

With over a decade of experience building and maintaining mobile applications spanning various industries, my team at Amita offers the specialised skills your project requires. We are an honest, reliable and dedicated software house that prides itself on delivering cutting-edge solutions to clients worldwide. As you can see from our extensive portfolio, we have successfully tackled similar projects, including the tasks you need help with, like bug fixes, UI improvements, and API integration, among others, on React Native. One of the things that sets us apart is our commitment to ensuring you feel comfortable every step of the way on your project. We will not only fix bugs but also optimise performance, improve the UI, resolve any authentication issues you may have and much more. Whether it be Firebase issues or Payment Gateway integrations, leveraging our skills in Node.js, Redux and REST APIS will ensure smooth operations. Before commencing work, we always sign NDAs, MSAs and SOWs to foster transparency and avoid any unpleasant surprises for both parties. In addition to our extensive technical expertise in React Native across Android and iOS for mobile app development, we offer competitive pricing that is strategically tailored to small- to mid-sized international businesses like yours. Let's get to work!

@BarryCrouch

Stepping into an existing React Native codebase to tackle push notifications, payment gateways, and store deployment requires a methodical audit before writing new code. Since the app is around 80% complete, tackling Firebase sync issues and authentication stability first prevents compounding bugs during final testing and store submission. We will begin with a focused diagnostic of the current state, resolving critical blockers in API integration and UI layout before moving to Google Play and Apple App Store packaging. The main dependency for a smooth launch will be prompt access to your existing Firebase console credentials and developer accounts. Could we start with a narrow diagnostic milestone to review the current repository state and confirm the exact build configurations?

@Eliteinno

Hello, Is your team already utilizing Redux for state management? Also, are there any specific Firebase issues you’ve identified yet? Excited to complete your mobile app! I've tackled similar challenges, and I'm ready to dive in and streamline the process, focusing on resolving Firebase and API integration smoothly. Let's discuss the best ways to enhance user experience and how I can contribute effectively. I'd love to share examples of my past work in chat. Shall we have a brief call to align on your requirements and timeline? Looking forward to hearing from you! Just drop a message to get started effortlessly.

@krupnovdenis

Hello! We can finish the remaining React Native work, stabilize the app, and help with launch. 1. Which parts are still unfinished and most important first? 2. Do you already have a test build and store access? — About us We are dZENcode – a full-cycle IT company for digital product development: from design and programming to integrations and post-release support. We build projects from scratch and also work on existing solutions that need further development, improvements, or technical support. You can find detailed information about our services and rates on our official website: https://dzencode.com. Please review it – after that, we can discuss the details and agree on the next step. ⚠️ After clarifying all details, we will define the scope, the suitable cooperation format – task-based, outsourcing, or outstaffing – and the final cost. Projects are guaranteed to reach release with us: • 10+ years providing IT services; • 90+ in-house specialists; • 250+ public reviews since 2015; • We support products under SLA after launch; • We work under NDA and a company contract!

@toriquldev123

Hello There! I'm Md. Toriqul Islam, and I'm excited to partner with you. I understand your React Native application is already around 80% complete, and you need an experienced developer to finish the remaining work. I can resolve bugs, optimize performance, improve the UI, fix Firebase and authentication issues, complete API integrations, implement push notifications and payment gateway functionality, perform thorough testing, and successfully publish the app on both Google Play and the Apple App Store. I am skilled in React Native, Node.js, Firebase, REST APIs, Redux, JavaScript, Git, Android, iOS, Payment Gateway Integration, Push Notifications, and App Store Deployment. I'm confident I can efficiently work with your existing codebase, deliver a stable production-ready application, and ensure a smooth deployment process with clean, maintainable code. Looking forward to hearing from you. Best regards, Md. Toriqul Islam

@Tacticssoft

Hi, I can quickly take over your existing React Native project, resolve the remaining issues, optimize performance, complete integrations, and deliver production-ready Android and iOS releases with clean, maintainable code. Thanks

@shayankhan333

Three developers in and 80% done usually means the last 20% is the hardest, authentication edge cases, payment gateway callbacks, and Firebase messaging token issues that only surface on iOS. I've rescued projects like this more times than I can count. I'll audit the current codebase first, fix critical bugs and Firebase auth flows, then handle payment integration, push notifications, and both store submissions. One thing worth flagging: Apple's review process is stricter on apps using third-party payment SDKs, so I'll make sure the implementation follows their latest guidelines to avoid rejection. I've got relevant examples of React Native apps I've taken over and shipped. Happy to share those in chat. 1) Which payment gateway are you using, or is that still undecided? Let's get this moving. Shayan

@technologiesit

Having successfully built and deployed over 200 projects over my 8-year career, I am confident in my ability to complete your React Native mobile app development. My broad skillset in Mobile Development and proficiency in JavaScript including React.js and React Native, aligns directly with your project needs. In addition to meeting the outlined requirements, I bring an added value with my expertise in UI/UX design as well as maintaining a clean, scalable & secure codebase which is vital for future sustainability of your app. My past clients hold high regard for my fast communication and ability to deliver on time; expect no less from me regarding your Google Play Deployment & Apple App Store Submission needs.

@thomasb726

Hi , Thanks for sharing your project. I read through the description and it looks like you're looking for someone with experience in iPhone, App Store Optimization, Mobile Development, Mobile App Development, PhoneGap, React Native, Swift, JavaScript, React.js and App Development. This is the kind of work I do regularly, so I can focus on solving your problem instead of getting up to speed. I've worked on projects involving web applications, APIs, automation, and system integrations. Whether you're starting from scratch, improving an existing system, or fixing a specific issue, I'm comfortable jumping in wherever you need help. You can view examples of my work here: https://www.freelancer.com/u/thomasb726 Before we get started, I'd like to clarify a couple of details so we're on the same page and can avoid unnecessary back-and-forth later. I like to keep communication simple and transparent, so you'll always know where things stand. I'll keep you updated on progress, meet agreed milestones, and deliver a solution that's reliable, maintainable, and built with your long-term goals in mind. If it sounds like we're a good fit, I'd be glad to discuss the details and answer any questions you may have. Thanks for your time, and I look forward to hearing from you. Best, Tom

@Sohailzk

Hello, Im expert in app deployment work, I published many apps on playstore and appstore without any issue, Kindly dm me to start work immediately. Thanks

@abhishek060

Hi, Finishing and stabilizing an existing React Native app is something I have experience with. I can quickly audit the current codebase, resolve bugs, optimize performance, fix Firebase and authentication issues, complete API integrations, implement push notifications and payment gateway, perform thorough testing, and handle both Google Play and App Store submissions. I've worked on maintaining and rescuing existing React Native projects, improving app stability, performance, and release readiness without rewriting the entire application. Let's review your current codebase and pending task list—I can provide a realistic timeline and start with the highest-priority issues immediately. Best, Abhishek