App Diagnosis & RepairRobert Kaltenbach
I specialize in stabilizing and restoring existing applications that have stalled due to technical debt, incomplete implementations, or unreliable production behavior. My approach combines structured diagnosis with targeted engineering fixes to reinforce core systems, resolve deployment and authentication issues, and reestablish a dependable foundation for continued development or launch. The result is a clear, functional application state that teams can confidently test, demo, iterate on, or take to market.
What's included
System Audit & Diagnosis
Before touching code, I perform a structured technical audit to identify root causes and risk areas.
Includes:
• Environment & deployment review (dev / preview / prod)
• Authentication & user flow verification
• Backend services & database integrity check
• Dependency, build, and configuration analysis
• Clear identification of blocking vs. non-blocking issues
Deliverable:
A concise Repair Plan outlining:
• What’s broken (and why)
• What’s risky but recoverable
• What can be safely ignored or deferred
• Recommended fixes and priority order
Targeted Repair and Stabilization
I implement focused fixes that restore functionality without unnecessary rewrites.
Includes (as applicable):
• Authentication & session repair
• Build / deployment failures
• API & backend logic fixes
• Database schema or data corrections
• State, routing, or flow issues
• Platform-specific fixes (web, iOS, Android, Expo, etc.)
Deliverable:
A working, stable application state with verified core flows (sign-in, navigation, critical actions).
Environment & Deployment Validation
Many apps “work locally” but fail at launch. This step ensures the app behaves correctly where it actually matters.
Includes:
• Production parity checks
• Environment variable & secret validation
• Hosting / publishing configuration fixes
• TestFlight / App Store / Play Store readiness (if applicable)
• Demo-ready
Deliverable:
A verified deployment or distribution build that behaves as expected outside of preview mode.
Clean Handoff & Future-proofing
Once the app is stable, I make sure you’re not stuck again.
Includes:
• Cleaned source files and updated configs
• Documentation of key fixes and architectural notes
• “What to touch / what not to touch” guidance
• Optional recorded walkthrough or live handoff session
Deliverable:
A clear handoff package that lets you or your dev team move forward confidently.
FAQs
I work with existing web and mobile applications that are partially built or malfunctioning — including Expo/React Native apps, web apps, Anything.com apps and hybrid builds. Common issues include broken authentication, failed deployments, unstable environments, and features that work in preview but not in production.
No. The goal is targeted repair, not unnecessary rewrites. I focus on diagnosing root causes and fixing only what’s required to restore stability and core functionality. If a larger rebuild is genuinely needed, I’ll clearly explain why before proceeding.
That’s common with broken apps. I’ll prioritize issues, fix the critical blockers first, and communicate clearly if additional work is recommended so you can decide how to proceed.
Yes. I regularly repair apps built by other developers, agencies, or platforms like Anything, Expo-based stacks, and custom setups. You don’t need to understand the original architecture. I’ll handle the investigation.
The goal is a stable, working application with verified core flows. While this service focuses on repair rather than feature expansion, the end result is something you can confidently test, demo, deploy, or continue building on.
Yes. You’ll receive a clean handoff with notes on what was fixed, how things are structured, and what to be careful with moving forward.
Example work
Robert's other services
Starting at$75 /hr
Tags
Anything
Cursor
Expo
GitHub
Supabase
Android Developer
iOS Developer
Web Developer
Service provided by
Robert Kaltenbach proChicago, USA
- $1k+
- Earned
- 5
- Paid projects
- 5.00
- Rating
- 80
- Followers
App Diagnosis & RepairRobert Kaltenbach
Starting at$75 /hr
Tags
Anything
Cursor
Expo
GitHub
Supabase
Android Developer
iOS Developer
Web Developer
I specialize in stabilizing and restoring existing applications that have stalled due to technical debt, incomplete implementations, or unreliable production behavior. My approach combines structured diagnosis with targeted engineering fixes to reinforce core systems, resolve deployment and authentication issues, and reestablish a dependable foundation for continued development or launch. The result is a clear, functional application state that teams can confidently test, demo, iterate on, or take to market.
What's included
System Audit & Diagnosis
Before touching code, I perform a structured technical audit to identify root causes and risk areas.
Includes:
• Environment & deployment review (dev / preview / prod)
• Authentication & user flow verification
• Backend services & database integrity check
• Dependency, build, and configuration analysis
• Clear identification of blocking vs. non-blocking issues
Deliverable:
A concise Repair Plan outlining:
• What’s broken (and why)
• What’s risky but recoverable
• What can be safely ignored or deferred
• Recommended fixes and priority order
Targeted Repair and Stabilization
I implement focused fixes that restore functionality without unnecessary rewrites.
Includes (as applicable):
• Authentication & session repair
• Build / deployment failures
• API & backend logic fixes
• Database schema or data corrections
• State, routing, or flow issues
• Platform-specific fixes (web, iOS, Android, Expo, etc.)
Deliverable:
A working, stable application state with verified core flows (sign-in, navigation, critical actions).
Environment & Deployment Validation
Many apps “work locally” but fail at launch. This step ensures the app behaves correctly where it actually matters.
Includes:
• Production parity checks
• Environment variable & secret validation
• Hosting / publishing configuration fixes
• TestFlight / App Store / Play Store readiness (if applicable)
• Demo-ready
Deliverable:
A verified deployment or distribution build that behaves as expected outside of preview mode.
Clean Handoff & Future-proofing
Once the app is stable, I make sure you’re not stuck again.
Includes:
• Cleaned source files and updated configs
• Documentation of key fixes and architectural notes
• “What to touch / what not to touch” guidance
• Optional recorded walkthrough or live handoff session
Deliverable:
A clear handoff package that lets you or your dev team move forward confidently.
FAQs
I work with existing web and mobile applications that are partially built or malfunctioning — including Expo/React Native apps, web apps, Anything.com apps and hybrid builds. Common issues include broken authentication, failed deployments, unstable environments, and features that work in preview but not in production.
No. The goal is targeted repair, not unnecessary rewrites. I focus on diagnosing root causes and fixing only what’s required to restore stability and core functionality. If a larger rebuild is genuinely needed, I’ll clearly explain why before proceeding.
That’s common with broken apps. I’ll prioritize issues, fix the critical blockers first, and communicate clearly if additional work is recommended so you can decide how to proceed.
Yes. I regularly repair apps built by other developers, agencies, or platforms like Anything, Expo-based stacks, and custom setups. You don’t need to understand the original architecture. I’ll handle the investigation.
The goal is a stable, working application with verified core flows. While this service focuses on repair rather than feature expansion, the end result is something you can confidently test, demo, deploy, or continue building on.
Yes. You’ll receive a clean handoff with notes on what was fixed, how things are structured, and what to be careful with moving forward.
Example work
Robert's other services
$75 /hr