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I will fix your vibe coded bugs, crashes, and optimize performance
App Developer Mobile, Web and Desktop Clean and Scalable Apps
Are you looking for a skilled Mobile App developer to bring your app idea to life?
You’re in the right place!
I specialize in building high-quality cross-platform applications with clean UI, smooth p...
About this Gig
Your app is crashing, lagging, or stuck in review, and every hour it stays broken is costing you users and revenue.
I fix that. Fast.
I'm Nouman, a developer with 4+ years of experience in Flutter bug fixing, React Native debugging, Android (Kotlin) app crash fixes, and iOS (SwiftUI) bug fixing. I've shipped 20+ production apps and worked on 90+ real-world projects across fintech, e-commerce, and enterprise systems.
What I Fix :
App crash fixes (Flutter / React Native / Android / iOS)
Flutter bug fixing & app debugging
iOS app bug fixing & SwiftUI error resolution
Firebase error fixes & backend sync issues
App performance optimization (lag, slow UI, freezes)
UI/UX bug fixing (overflow, layout issues, animations)
App optimization & publishing fixes (Play Store / App Store rejection fixes)
Why hire me?
Fixed apps with 100K+ downloads, reducing crashes by 60%. I don't patch bugs; I fix the root cause with clean, scalable solutions. You get reliable, production-ready fixes built for long-term stability.
Ready to fix your app?
Message me if you're unsure Ill help you choose the right package quickly and honestly.
Let's make your app stable, optimized, and ready for publishing.
My Portfolio
FAQ
Do you fix errors in existing apps?
Yes, I specialize in fixing bugs and improving existing Flutter apps.
Will you explain what you fixed?
Yes, I can explain the solution clearly after delivery.
Do you support Firebase & APIs?
Yes, I work with Firebase, REST APIs, and backend integrations.
Will I get the source code?
Yes — I send back the updated files (or a pull request if you prefer). You own the code 100%.
What if you can't fix the bug?
I only accept the order after confirming I can fix it within the package — so this rarely happens. If it does, full refund.
What Flutter versions do you support?
Flutter 3.x and above is fastest. I can work with older versions — message me first so I can scope it correctly.
Do you sign NDAs?
Yes, on Standard and Premium packages.
Can you also add new features after fixing bugs?
Yes — I'll send a Custom Offer for any additional work outside the bug fix scope.
How do I send my code privately?
Private GitHub repo invite, GitLab, Bitbucket, or zip via Fiverr's secure file share.
Reviews
1 reviews for this Gig
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Rating Breakdown
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stefan_stevanov
Serbia
Ongoing collaborationgood job man
$50
Price
10 days
Duration
Helpful?
Reviews
1 reviews for this Gig
| (1) | ||
| (0) | ||
| (0) | ||
| (0) | ||
| (0) |
Rating Breakdown
- Seller communication level
- Quality of delivery
- Value of delivery
Sort By
Most relevant
S stefan_stevanov
Serbia
Ongoing collaborationgood job man
$50
Price
10 days
Duration
Helpful?
