Browse categories
Explore
Fiverr Pro
English
$
USD
I will fix android ios app bugs, crashes and optimize performance
Mobile App Developer App Fixes No Code MVPs AI Integration App Launch
Mobile app developer specializing in 4 areas most freelancers ignore: fixing broken apps, no-code MVPs (FlutterFlow/Bubble/Adalo), adding AI features to existing apps, and native-feel website-to-app c...
About this Gig
Is your Android or iOS app crashing, freezing, or running slow?
I'll find the root cause and fix it fast.
I specialize in repairing existing apps, not just building new ones. Whether your app crashes on launch, has memory leaks, broken API calls, slow load times, or UI bugs after an update, I isolate the issue and deliver a stable, optimized build.
What I fix:
- App crashes and force-closes
- Slow performance and lag
- Memory leaks and battery drain
- Broken APIs, login, or payment flows
- UI glitches across devices
- Play Store/App Store rejection issues
- Outdated SDK or dependency conflicts
I work with Flutter, React Native, Kotlin, Java, Swift, and native Android/iOS codebases. You'll get a short diagnostic summary before any major fix so you know exactly what's wrong and how I'm solving it.
Send your app's repository (GitHub/GitLab/ZIP) and a description of the issue, and I'll reply with a clear fix plan.
Message me before ordering.
FAQ
Do you need my full source code?
Yes I need access to your app's repository (GitHub, GitLab, Bitbucket) or a ZIP file to diagnose and fix the issue.
What if a bug takes longer than scoped?
I'll always message you first before requesting extra time or budget no surprise charges.
Can you fix apps you didn't build?
Yes, most clients come to me with apps built by other developers or agencies.
Do you fix both Android and iOS?
Yes native Android (Kotlin/Java), native iOS (Swift), Flutter, and React Native.
Will I get a report of what was wrong?
Yes, every package includes a short summary of bugs found and how they were resolved.
