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

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Matija Gk

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.


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

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