Takeovers, rescues, and rejected-app fixes
Your Developer Left. Your App Is Stuck. We Take It From Here.
We take over unfinished, broken, or rejected apps — audit the code and backend, fix what's critical, and get the product ready for launch. No blame, no rebuild-everything pitch, just a clear technical path forward.
Who this is for
• Founders whose previous developer disappeared mid-project
• Apps rejected by the App Store or Play Store
• Products with recurring crashes or broken Firebase auth
• FlutterFlow or AI-built MVPs that hit a wall
Problems we solve
• Unfinished app with no documentation and no handover
• App Store rejection (including Guideline 4.2 minimum functionality)
• Firebase authentication, OTP, or notification bugs
• Crashes in production you can't reproduce
• Codebase nobody on your side can safely change
Services included
• Code and backend takeover audit (written report)
• Critical bug and crash fixing
• Firebase auth / OTP / notification repair
• App Store rejection fixes and resubmission
• Completing unfinished features
• Refactoring only where it protects delivery
• Documentation and safe handover
• Ongoing maintenance after rescue
A practical delivery process
We keep the technical path clear so you know what is being built, what is being fixed, and what needs to happen next.
You give us repo + store access — we sign an NDA if needed
Audit: what works, what's broken, what's risky (3–5 days, written)
Fixed-scope rescue plan — fix, finish, and stabilize in priority order
Launch or relaunch, then optional monthly maintenance
Tech stack we use when it fits
We choose the stack around product needs, not hype.
Related services
Useful next steps if your product needs more than one layer of technical support.
AI MVP Audit & Rescue Service
If your AI-built MVP is buggy, slow, expensive to run, or hard to update, we can audit it and create a clear plan to fix and scale it.
App Maintenance and Scaling Services
Already have an app? We help you fix bugs, clean the code, improve performance, reduce server cost, and prepare the product for growth.
Hire Flutter Developers
Get a senior Flutter and backend team that builds, fixes, and ships cross-platform apps for Android and iOS — from MVP to App Store and Play Store launch. Clear communication, weekly demos, and rates that make sense for startups.
Related case studies
A few examples of products and workflows that align with this service.
Casino Tracking App
BCT Casino Tracker
BCT Casino Tracker is a mobile casino companion app designed to help users track sessions, monitor bankroll changes, and review game-related insights in one place.
Mobile App + PWA
GTechOfficial
GTC is a Web3 rewards platform built to help users monitor wallet activity, complete social tasks, build streaks, and participate in token engagement flows.
AI OCR / Health Utility
Doctor OCR / Medical Summarizer
Doctor OCR / Medical Summarizer is a concept case study for a health utility app that extracts report content and explains it in simpler language.
What clients say
Direct quotes from founders we've worked with — added as they come in.
“He significantly improved the performance and smoothness of my app, and the quality of his work is outstanding. He is reliable, professional, and always willing to find the best solution.”
mariusz100
Long-term Fiverr client · Poland
“Abdullah did an exceptional job updating and improving my project. They understood exactly what I needed, paid great attention to detail, and delivered high-quality work beyond my expectations.”
howeasyymp
Fiverr client · Cyprus
“Each stage is completed reliably, quickly, and with full professionalism. You can trust him with any task — it will be done well. Communication is smooth, clear, and never a problem.”
mariusz100
Repeat Fiverr client · Poland
Frequently asked questions
Short answers to the questions founders usually ask before starting.