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Fiverr Pro
English
$
USD
I will fix flutter bugs, performance issues, and firebase errors in your app
Owais Khan
About this gig
About This Gig
Stop the crashes. Launch with confidence.
Nothing is more frustrating than a "Red Screen of Death" or a laggy app. As a Flutter expert, I specialize in deep-level debugging and performance optimization. I don't just "patch" errors; I solve the root cause to ensure your app is stable, scalable, and market-ready.
️My Specialized Fixes:
- Crashes & Logic: Resolving Null safety, initialization errors, and app freezes.
- UI/UX Polishing: Fixing layout overflows, responsiveness, and broken widgets.
- API & Database: Troubleshooting REST APIs, JSON parsing, and Firebase connectivity.
- Performance: Eliminating lag, optimizing list views, and reducing app size.
- Upgrades: Fixing dependency conflicts and outdated packages.
Why Choose Me?
- Clean Code: Production-ready fixes following clean architecture.
- 2026 Ready: Expert in Flutter 3.0+ , Impeller, and the latest Firebase features.
- Fast Turnaround: I treat bugs as emergencies and respond promptly.
I solve the technical headaches so you can focus on your business.
NOTE: Every bug is unique. Please message me with a screenshot or error description before ordering so I can provide an accurate quote!
Get to know Owais Khan
Owais Khan
Mobile Engineer Flutter
- FromPakistan
- Member sinceFeb 2026
- Avg. response time1 hour
Languages
Urdu, English
I am Muhammad Owais, a Mobile Engineer specializing in Flutter, with a strong focus on building secure, scalable, and production-ready mobile applications. I design clean, maintainable architectures and deliver smooth, performance-optimized user experiences.
FAQ
Do you need access to my entire source code?
Yes. To diagnose the issue accurately, I will need access to your repository (GitHub/GitLab) or a zip file of your source code. Rest assured, your project remains 100% confidential.
Can you fix bugs in apps built by other developers?
Absolutely. I am experienced in jumping into existing codebases, understanding the logic quickly, and cleaning up errors left by previous developers.
Will you help me upload the fixed version to the Play Store/App Store?
My standard packages cover fixing the code. However, if you need help with the submission process or fixing rejection issues, we can add that as a custom extra!
What if you can't fix the bug?
If the issue is fundamentally impossible to fix due to external API limitations or platform constraints, I will inform you immediately. If I cannot deliver the fix I promised, I offer a full refund.
Do you offer long-term maintenance?
Yes! Many clients hire me for monthly maintenance to ensure their apps stay updated with the latest Flutter and Android/iOS versions.
