I will fix bugs and errors in your ios and android app

Vetted Pro

Canada

I speak English, Ukrainian, Russian, Polish

130 orders completed

Vetted Pro, Mobile, Web, SaaS, AI and Design Development

100+ production apps shipped. 4.9 stars maintained across every single one. That's the standard I've held for 10 years as Founder of Marrix Power — a Vetted Pro software agency building mobile, web, S...
Vetted by Fiverr Pro

Andrew Maksakov was selected by the Fiverr Pro team for their expertise.

Vetted for

  • App Design

  • Mobile App Development

  • Mobile App Maintenance

  • Software Development

  • Website Development

About this Gig

Vetted Pro

Looking for a Vetted Pro agency to fix bugs and errors in your mobile app frontend, backend or both?


You've found the right partner.


I'm Andrew, Founder of Marrix Power and a Vetted Fiverr Pro. My team has debugged and fixed 100+ mobile applications worldwide from simple crashes to complex performance issues and broken integrations.


What we deliver:

  • Bug fixing for iOS and Android mobile apps
  • Crash fixes and error resolution
  • Performance optimization and memory leaks
  • UI glitches and layout fixes
  • API and integration bug fixes
  • Backend and database error resolution
  • App Store rejection fixes
  • Code review and cleanup


Whether your app is crashing, failing in production, losing users due to performance issues, or rejected from the App Store we diagnose the real cause and fix it properly.


Stack: Flutter, React Native, Swift, Kotlin · Node.js, NestJS, Python, Firebase.


The Marrix Power Advantage:

  • Agency team, personal oversight from Andrew on every project
  • We identify root causes, not just symptoms
  • Vetted Pro independently approved by Fiverr for technical excellence
  • We work with any existing codebase
  • Clean fix with documented changes every time


Message us before placing your order.

Platform:

Cross-platforms

App type:

Hybrid

Frameworks:

Flutter

NativeScript

Laravel

Angular

SwiftUI

Node.js

Purpose:

Chat

Social networking

Entertainment

Medical

Expertise:

Cross-browser/Device compatibility

Performance

Programming language:

C#

Dart

Java

JavaScript

PHP

Python

Swift

Tools:

Bubble

Flutterflow

Expo

Android Studio

Unity

Xcode

Supabase

My Portfolio