I will fix bugs and issues in your android, flutter or kmp app

S
sonukg096
S
sonukg096
Sonu Kumar
fix bugs and issues in your android, flutter or kmp app
Full Screen
fix bugs and issues in your android, flutter or kmp app
Full Screen
fix bugs and issues in your android, flutter or kmp appfix bugs and issues in your android, flutter or kmp app

About this gig

Existing app crashing, broken, or stuck? I'll diagnose and fix it no full rebuild needed.

I fix bugs, crashes, and performance issues in Android (Kotlin/Java), Flutter (Dart), and Kotlin Multiplatform codebases including apps I didn't originally build.

I fix:

  • App crashes and ANRs
  • UI bugs and layout issues
  • Memory leaks and performance problems
  • Build/Gradle errors
  • Broken API or Firebase integrations
  • Play Store/App Store rejection issues

What you'll get:

  • Root cause diagnosis
  • Fixed, tested code
  • A short summary of what was wrong and what changed

Send me your repo access, error logs, or a description of the issue, and I'll confirm scope before you order.

  • App type

    • Hybrid

  • Programming language

    • Dart
    • Java
    • Kotlin
    • Swift
    • Flutter

  • Frameworks

    • Flutter
    • Jetpack Compose
    • SwiftUI
    • Jetpack Compose Multiplatform

  • Purpose

    • Chat
    • Dating
    • Delivery
    • Music
    • Restaurant
    • Shopping
    • Finance
    • Social networking
    • Health & fitness
    • Productivity tools

  • Tools

    • Android Studio
    • Xcode
    • Firebase
    • Visual Studio Code

  • Expertise

    • Localization
    • Performance
    • Security
    • Design
    • Data storage
    • Firebase

Get to know Sonu Kumar

Sonu Kumar

Fast and Reliable Mobile App Development

  • FromIndia
  • Member sinceOct 2025

  • Languages

    English, Hindi, Punjabi
I am a results-driven Android Developer with 7+ years of expertise in building scalable, secure, and high-performance mobile applications. With a strong background in Java, Kotlin, Android SDK, and modern frameworks, I have consistently delivered apps that meet business goals and delight end-users. 🔹 Core Strengths • Proven ability to design and implement robust Android architectures (MVVM, MVP, MVI, Clean Architecture) that ensure scalability, security, and long-term maintainability. • Proficient with Jetpack Compose, Kotlin Coroutines, Retrofit, Room, and modern Android tools.

My Portfolio

Other Mobile App Development Services I Offer

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