I will fix bugs and errors in your mobile or desktop application

M
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M
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Matija Gk
fix bugs and errors in your mobile or desktop application
fix bugs and errors in your mobile or desktop application
Full Screen
Full Screen
fix bugs and errors in your mobile or desktop applicationfix bugs and errors in your mobile or desktop applicationfix bugs and errors in your mobile or desktop application

About this gig

Is your mobile or desktop app crashing, freezing, or behaving unexpectedly? I can help.


I specialize in debugging and fixing issues in .NET MAUI and C# applications for Android and Windows. Whether it's a crash on startup, a broken navigation, a UI glitch, or a logic error I will find it and fix it.

What I can fix:

  • App crashes and exceptions
  • Navigation and routing errors
  • UI layout and display issues
  • Data not saving or loading correctly
  • API and network connection problems
  • Performance issues and slow loading

What I need from you:

  • Your project code or the relevant files
  • A description of the problem
  • Any error messages or screenshots

I respond fast, communicate clearly, and don't stop until the problem is solved.


  • App type

    • Hybrid

  • Programming language

    • JavaScript
    • Python

  • Frameworks

    • MAUI

  • Purpose

    • Restaurant
    • Booking
    • Finance
    • Health & fitness
    • Education
    • Lifestyle
    • Travel
    • Custom
    • Ecommerce
    • Quiz

  • Tools

    • Android Studio
    • Visual Studio Code
    • Visual Studio

  • Expertise

    • Cross browser/Device compatibility
    • Performance
    • Design
    • Data storage
    • API integration
    • Compatibility

Get to know Matija Gk

Matija Gk

Mobile and Desktop App Developer

  • FromCroatia
  • Member sinceJan 2026
  • Avg. response time1 hour

  • Languages

    English, Croatian, German
Looking for a reliable developer to build or improve your mobile or desktop app? You're in the right place. I specialize in .NET MAUI and C#, building clean, fully functional applications for Android and Windows from a single codebase. What I can build for you: Android mobile apps Windows desktop apps Cross-platform apps (Android + Windows from one codebase) Bug fixes and feature additions to existing .NET/C# apps Clean, well-structured code Fast communication

My Portfolio

Other Mobile App Development Services I Offer

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