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I will bug fix mobile app flutter react native android ios app fix webapp firebase
I build and fix web, mobile and Shopify apps Flutter, React, no code
Hi, I'm a developer who turns app and store ideas into real products. I build and fix mobile and web apps with Flutter, React, and no-code tools like Lovable, Base44, and Replit, and turn them into na...
About this Gig
Is your app crashing, freezing, or throwing errors? I'm James, and I specialise in fast, reliable bug fix and app debugging for Android and iOS mobile apps.
Whether your app is built in Flutter, React Native, or native code, I diagnose the real cause and deliver a clean, tested fix no band-aids.
What I offer:
- App crash fix, freezes & startup errors
- Mobile app bugs, UI glitches & broken layouts
- API integration, REST API & Firebase fixes
- Backend, database & authentication issues
- Build, deployment & app store rejection fixes
- Performance optimization for slow apps
- Flutter & React Native bug fixing
- Native Android & iOS debugging
- App maintenance, updates & upgrades
- Payment, notification & third-party SDK fixes
From a single crash to full mobile app maintenance, I get your app stable, fast, and store-ready.
Don't let bugs cost you users message me now with your issue and I'll get your app running perfectly today!
Platform:
Cross-platforms
App type:
Hybrid
My Portfolio
FAQ
What kind of app bugs can you fix?
I fix crashes, freezes, UI glitches, API errors, build failures, login issues, and app store rejections across Android and iOS.
Which frameworks do you work with?
Flutter, React Native, and native code, plus Firebase, REST APIs and common backends. Send your stack and I'll confirm the fit.
Do I need to share my source code?
Yes, I need access to your project code or repository to diagnose and fix issues properly and securely.
Can you fix an app you didn't build?
Absolutely. I regularly debug and repair existing apps built by other developers or AI tools.
My app was rejected by the App Store, can you help?
Yes. I fix the underlying issues causing rejection and prepare your app to pass review and go live.
Will fixing bugs break other features?
No. I test thoroughly after each fix to make sure existing features keep working as expected.
Do you offer ongoing maintenance?
Yes, my Premium package includes maintenance, and I offer continued support to keep your app stable long-term.
Can you also improve app performance?
Definitely. Beyond bug fixing, I optimize speed, reduce crashes, and improve overall app stability.
