I will fix bugs in your mobile app and solve errors quickly

S
sumitr0y
S
sumitr0y
Roy
fix bugs in your mobile app and solve errors quickly
Full Screen
fix bugs in your mobile app and solve errors quickly

About this gig

I will fix bugs, crashes, and errors in your mobile app built with Flutter, React Native, Java, or Kotlin. Using modern cross-platform and performance optimization practices, I resolve issues like app crashes, API failures, UI glitches, build errors, and slow performance so your app runs smoothly on Android and iOS.

My service includes clean debugging, tested fixes, and clear notes on what was changed. I focus on mobile app maintenance, bug tracking, and code quality to improve stability, user experience, and app store ratings.

Whether you need a quick fix for a single error or full debugging for a production app, I deliver reliable, maintainable solutions with fast turnaround and clear communication.

  • App type

    • Hybrid

  • Programming language

    • Dart
    • Java
    • Kotlin
    • React Native
    • Flutter

  • Frameworks

    • Flutter
    • React Native

  • Purpose

    • Chat
    • Streaming
    • Finance
    • Social networking
    • Entertainment
    • Health & fitness
    • Maps & navigation
    • IoT
    • Productivity tools
    • Custom

  • Tools

    • Android Studio
    • Xcode
    • Firebase
    • Visual Studio Code
    • Visual Studio

  • Expertise

    • Localization
    • Performance
    • Security
    • Design
    • Release management
    • API integration

Get to know Roy

Roy

Your idea, my code a perfect Mobile app

  • FromIndia
  • Member sinceApr 2025
  • Avg. response time1 hour

  • Languages

    Hindi, English
Hi! I’m Sumit Kumar Roy, a Flutter Developer with 3+ years of experience in building smooth, fast, and scalable mobile applications. I specialize in creating clean UI, Firebase-integrated apps, API-based systems, dashboard modules, and complete end-to-end solutions. I focus on quality, performance, and simple user experience, and I deliver apps that are easy to manage and ready for real-world use. If you need bug fixing, new features, or a complete app from scratch — I’m here to help with reliable and professional service.

My Portfolio

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