Flutter App Upgrades & Bugfixes

@mrresearcher99

Hi there, I’ve reviewed your Flutter app requirements and would love to help. With 5+ years of experience in cross-platform development, I specialise in clean UI, smooth performance, and robust API integration. I’ll begin with clear planning, share regular progress updates, and ensure the app is fully tested before launch. Let’s connect to discuss your vision — I’m ready to get started! Best, Bhargav Flutter Developer | Android & iOS Expert

@pinkeegupta

Hi 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. Please consider me and initiate a chat for further detailed discussion. Regards, Anju Logical Soft Tech Pvt Ltd, Indore(M.P)

@adityapandia32

I can take this codebase forward and bring it to a clean, production-ready state without disrupting what already works. I regularly work on existing Flutter apps where the goal is to add missing core features while improving performance and UI stability. Authentication with persistent sessions, in-app purchases for both consumables and subscriptions, and reliable push notifications across all app states are things I’ve implemented and debugged multiple times on live apps. I’m comfortable pulling your repo, understanding the current architecture quickly, and making focused, well-documented changes rather than broad refactors. I also pay close attention to startup time, list rendering, and layout issues that cause flicker or misalignment, especially across different devices. You’ll get clean commits, test builds for Android and iOS, and a clear changelog so you can review and verify every improvement with confidence.

@Rahulsingh5xz

Hello, I’m Rahul Singh from Team Velora, and we’ve been enhancing and optimizing Flutter applications for over 3 years. We clearly understand your requirement to add authentication, in-app purchases, push notifications, and to resolve performance and UI issues across Android and iOS. Our Flutter experts can implement these features cleanly while improving startup time, scrolling performance, and visual stability. Let’s connect in the chat box regarding the project.

@talharehmandev

Hi there, I can extend and polish your existing Flutter app without disrupting the current architecture. ✔️ Secure auth with persistent sessions (Android & iOS) ✔️ In-app purchases (consumables + subscriptions) ✔️ Firebase push notifications (foreground, background, killed) ✔️ Performance fixes (startup time, list scrolling) ✔️ UI alignment & flicker cleanup Deliverables: ✔️ Clean, commented commits ✔️ APK & IPA test builds ✔️ Short changelog of fixes and optimizations Ready to start as soon as repo access is shared. Best regards, Talha

@RAJNI8128

Hi, I’m a Flutter developer with 5+ years of experience improving and scaling existing production apps. I can help you: Add secure user authentication with persistent sessions on Android & iOS Integrate in-app purchases (consumables + subscriptions) Set up Firebase push notifications for foreground, background, and killed states Diagnose and fix startup delays, scrolling lag, and UI flicker/misalignment Ensure everything builds cleanly on the latest stable Flutter SDK You’ll receive: Updated source with clean, well-documented commits Test builds (APK & IPA) showing all new features working A short changelog of improvements and fixes I’m comfortable jumping into existing codebases and optimizing without disrupting the architecture. Happy to start as soon as you share the repo. Best, Rajni

@kishores06

I have hands-on experience building Flutter applications integrated with backend APIs. I have worked on real-world projects including a physiotherapy management system where I handled app logic, API integration, forms, validation, and backend coordination. I focus on clean UI, proper state handling, and writing maintainable code. I understand project requirements clearly before starting and provide regular updates to ensure the final result matches expectations. I can deliver this project within the given timeline and am open to revisions to ensure quality.

@nadiad382

This project needs a clean, professional, user-friendly solution with a seamless, integrated experience. I focus on clarity, intuitive structure and making sure every part works smoothly together. No overcomplication - just a reliable, well-thought-out result that feels natural to use and easy to maintain. I understand your need to add secure user authentication with persistent sessions, integrate in-app purchases for consumables and subscriptions, enable Firebase push notifications across all app states, and resolve performance and UI issues for a polished Flutter app. With expertise in Flutter development, app security, and performance optimization, I deliver clean, well-documented code and thorough testing. While I am new to freelancer, I have tons of experience and have done other projects off site. Message me today - let's build something that works for your business. Regards, Nadia Du Preez

@bikalbinod

Hello, I can take this on immediately and improve your existing Flutter codebase without disrupting what already works. I have solid experience enhancing live Flutter apps with authentication, in-app purchases, push notifications, and performance optimizations across both Android and iOS. I’ve implemented secure user authentication with persistent sessions, in-app purchases for consumables and subscriptions, and Firebase Cloud Messaging for foreground, background, and terminated states in multiple projects. I’m also comfortable profiling Flutter apps to fix slow startup times, janky scrolling, and UI flicker or layout issues. Once you share the Git repo and walkthrough, I’ll: - Add secure, persistent authentication - Integrate in-app purchases correctly for both platforms - Enable reliable push notifications via FCM - Optimize performance and clean up UI glitches - Ensure everything builds cleanly on the latest stable Flutter SDK Deliverables: - Clean, well-commented commits in the updated source - APK and IPA test builds demonstrating all new features - A clear change log covering optimizations and UI fixes I can start right now and will complete everything within the timeline you prefer. Clear communication and clean delivery are my priorities. Looking forward to getting started. Bikal Binod Adhikari

@rajm267747

Hi, I’ve worked on existing Flutter apps where the code already runs but needs new features, performance fixes, and UI cleanup, so this is very familiar work for me. I can add secure user authentication with proper session handling that works the same on Android and iOS. For in-app purchases, I’ll integrate support for both consumables and subscriptions, including restore purchases and platform-specific handling for Play Store and App Store. I can also set up Firebase Cloud Messaging so push notifications work reliably when the app is in the foreground, background, or completely closed. I’ve handled FCM in production apps and understand the edge cases that usually cause missed notifications. On the performance side, I’ll profile startup time and scrolling issues, reduce unnecessary rebuilds, optimize lists, and fix the UI flicker and alignment problems you’re seeing on certain screens. Once the work is complete, you’ll get: • Updated source code with clean, readable commits • Android APK and iOS IPA builds showing all new features working • A short, clear changelog explaining what was optimized and fixed Everything will compile cleanly on the latest stable Flutter SDK and behave the same on both platforms. Happy to start once you share the repo and walkthrough. Thanks, Raj

@stefkyr

I have experience in creating mobile alls using flutter. I am driven and motivated to work. I have enough time to complete the project

@shahbaz5840

Hi, I can easily DO your work IN 2 DAYS, DM me now to get started, PRICE NEGOTIABLE 100% Work satisfaction is provided!

@gmehmood

Hello, I have carefully reviewed your requirements and I’m confident I can help you enhance and polish your existing Flutter application efficiently and reliably. I am an experienced Flutter developer with strong hands-on expertise in Android & iOS, performance optimization, and production-ready app delivery. I have worked on apps that include authentication, in-app purchases, push notifications, and UI/UX refinements.

@awab373

Hello, I can enhance your existing Flutter app by adding secure user authentication with persistent sessions, integrating in-app purchases (consumables and subscriptions), and enabling reliable push notifications via Firebase Cloud Messaging for all app states. I’ll also optimize performance (startup time, list scrolling) and fix UI issues such as misalignment and flicker to ensure a polished, consistent experience on both Android and iOS. Deliverables: Clean, well-commented source code Test builds (APK & IPA) Brief changelog of improvements I’m ready to review your Git repo and start immediately.

@iramjafar588

With my strong background in Android app development and history of creating responsive applications, I am confident that I can efficiently address the upgrades and bug fixes required for your existing Flutter codebase. Over my 3 years of experience, I have honed my skills to create clean, well-commented commits which aligns perfectly with your requirement. Throughout my career, I have paid meticulous attention to performance quality, responsiveness, and compatibility, just as you've highlighted in the project description. By leveraging this expertise, I am well-suited to handle the challenges you're facing with slow-downs and UI glitches. My past experiencesuffering performance issues. Moreover, I believe in a thorough approach to the development process. Therefore, in addition to providing updated source code and demonstrating all new features on test builds, I will also meticulously document all changes made during optimization and bug fixing. This changelog will ensure transparency and give you an accurate understanding of how your app has been improved.

@shivam518518

I can fix your app bug and also add a feature as per your requirement so let's connect and do it to make a beautiful smooth app

@waleedjamshaid0

I am a full-stack Flutter developer with strong experience improving existing production codebases, not just building from scratch. I regularly work with Firebase Auth, FCM, in-app purchases, and Flutter performance optimization, including startup time reduction, list rendering improvements, and UI stability fixes. Because I understand Flutter internals and platform-specific behaviors on both Android and iOS, I can implement new features cleanly without breaking existing functionality. My focus is on maintainable code, clean commits, and consistent cross-platform behavior, ensuring your app runs smoothly and reliably on the latest stable Flutter SDK.

@MahaAbrarR

I’m an experienced Android Developer with a strong background in building high-performance, user-friendly Android applications using Kotlin and Java. I’ve worked on apps ranging from simple MVPs to fully scalable production applications. -What I can help you with: Native Android development (Kotlin / Java) Clean architecture (MVVM, MVC) API integration (REST, Firebase) UI/UX implementation (Material Design) Bug fixing, optimization & performance improvements I focus on clean code, scalability, and clear communication to ensure the app meets both technical and business goals. I always follow best practices and keep deadlines a top priority. I’ve reviewed your project requirements and I’m confident I can deliver a reliable and well-optimized solution. I’d be happy to discuss your idea in more detail and suggest improvements if needed. Looking forward to working with you. Best regards, Maha Rani

@mayur0111

Hi, I reviewed your requirements. Your Flutter app already runs, and you now need added functionality plus performance and UI polish across both Android and iOS using the latest stable Flutter SDK. I’ve worked on Flutter apps where I implemented secure user authentication with persistent sessions, in-app purchases (consumables and subscriptions), and Firebase Cloud Messaging with reliable delivery in foreground, background, and terminated states. I’ve also optimized slow startup times, improved list scrolling performance, and fixed UI flicker and alignment issues across devices. For this project, I will: * Add secure authentication with persistent sessions * Integrate in-app purchases for consumables and subscriptions * Configure FCM notifications for all app states * Optimize startup time and scrolling performance * Fix UI glitches, misalignment, and flicker issues Deliverables include clean, well-commented commits, test builds (APK & IPA), and a short changelog covering all changes. Quick question: Do you prefer Firebase Auth and native IAP handling, or do you already have a specific setup in mind? Once you share the Git repo and walkthrough, I can start immediately. Thanks, Mayur