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I will fix flutter app bugs, crashes, UI issues and add new features for android ios
Ahsanul
About this gig
Your Flutter app is crashing, showing errors, red screen or the UI is broken?
This gig will fix Flutter bugs, crashes and UI issues and also add new features to your existing Flutter app for Android and iOS.
Services in this gig
- Fix Flutter bugs, errors, red screens and app crashes
- Resolve API, Firebase and backend integration issues
- Fix UI and layout problems (overflow, wrong alignment, responsiveness)
- Improve performance, responsiveness and app loading speed
- Add new screens and features to your existing Flutter app
- Memory leaks and performance issues
- Responsive design fixes (different screen sizes)
Tech stack
- Flutter, Dart
- Firebase (Auth, Firestore, Realtime DB, FCM) or your REST/GraphQL API
- Android & iOS builds, Play Store / App Store ready code
Why this gig
- Specialized in Flutter bug fixing, UI fixes and feature development
- Clean, maintainable code and clear communication
- Focus on longterm support for your business app
- Long-term Support for your app's success
- Cost Savings by avoiding app store rejections
Calltoaction:
Send a message before ordering so your Flutter app issue can be checked and you can get the best package or a custom offer
Get to know Ahsanul
Ahsanul
Software Engineer,Flutter Mobile App Developer,API And Firebase Expert
- FromBangladesh
- Member sinceNov 2025
Languages
English, Hindi
Expert Full-Stack Engineer: Flutter, Laravel, & NodeJS Specialist
I am an Expert Full-Stack Engineer focused on building robust and scalable digital products that drive growth.
I specialize in backend development using Laravel and NodeJS to create secure, high-performance web applications and REST APIs, database optimization.
For modern mobile solutions, I utilize Flutter for beautiful, optimized, cross-platform apps (iOS/Android).
I am committed to clear communication and 100% client satisfaction.
I deliver clean, optimized, and business-ready code guaranteed to meet your project needs.
My Portfolio
FAQ
What if I don't know what's causing the crash?
That's completely fine! In the initial consultation, I'll analyze your app, review error logs, and identify the root cause. I specialize in diagnosing complex issues that are hard to track down. Send me a message with your app details and I'll investigate.
Can you fix issues in an existing production app?
Absolutely! I work with live apps regularly. I'll carefully diagnose issues without affecting your production app. We can work on a development branch, test thoroughly, and then deploy the fix. Zero downtime guaranteed.
Do you handle all types of Flutter apps?
Yes! I've worked with e-commerce apps, social media platforms, healthcare apps, fintech solutions, educational apps, and more. No matter the app type, if it's Flutter-based, I can help.
What if the issue is device-specific?
Device-specific issues are common (Android vs iOS, different screen sizes, OS versions). I test on multiple devices and emulators to identify platform- specific problems and provide reliable fixes.
Can you fix UI issues on iOS and Android?
Yes! Responsive design across iOS and Android is my specialty. I fix layout issues, screen orientations, safe areas, notches, and ensure perfect UI on all devices.
Can you integrate payment gateways?
Yes! I can integrate: - Stripe - PayPal - Apple Pay - Google Pay - Local payment systems - Custom payment solutions
How long does a typical bug fix take?
It depends on complexity: - Simple UI fix: 1-2 hours - Single bug: 4-8 hours - Multiple bugs: 1-2 days - Major features: 3-10 days Most fixes are delivered in the timeframe promised. Complex issues might take longer, but I'll communicate clearly.
Will you provide source code?
Yes! You'll receive: - Clean, documented source code - APK for Android testing - IPA for iOS testing (if needed) - Detailed changelog - GitHub repository (if requested) All code is yours to use, modify, and deploy.
Can you deliver faster than the timeline?
Often yes! Simple fixes can be done same-day or next-day. For complex issues, I work as fast as possible without compromising quality. You can also purchase the "Expedited Delivery" add-on for 2x faster delivery.
Do you work with desktop and web Flutter apps?
Primarily, I specialize in mobile apps (iOS & Android). However, I can handle web and desktop Flutter issues if requested. Let me know your specific needs.
