React Native bug fixing, upgrades and app maintenance
Already have a React Native app that crashes, won't build, feels slow or is several versions behind? I take over existing codebases, find the cause rather than patching the symptom, and leave the project easier to work on than I found it.
What's included
- Crash fixes on Android and iOS, with crash reporting set up so they stay fixed
- Failing builds: Gradle, CocoaPods, Xcode and dependency conflicts
- React Native version upgrades and New Architecture migration
- Performance: slow lists, heavy images, memory use and start-up time
- Code review and a written report of risks in the codebase
- Monthly maintenance for OS updates, store policy changes and small features
Taking over someone else's code
The first step is always reading: how state flows, where side effects live, what is native and what is JavaScript. You get a short written summary of what I found and what I'd fix first, before any large change.
Performance that holds up
On SELA every listing card is a photo, so lazy loading, image caching and lean queries were part of the feature, not a later pass. The same approach fixes slow screens in existing apps: measure first, then fix the real bottleneck.
Common questions
Can you fix an app someone else built?
Yes. Most maintenance work starts with code I didn't write. I begin with a short review so we both know what we're dealing with before I change anything.
How long does a React Native upgrade take?
It depends on how far behind the app is and how many native libraries it uses. A small jump can take a day or two; several major versions with the New Architecture can take a couple of weeks. I'll estimate after looking at the project.
My Android build fails after updating a library. Can you help quickly?
Yes — build failures (Gradle, Kotlin version, CocoaPods, Xcode) are usually quick to diagnose. Send the error output through the contact form.
Other ways I can help
- React Native app developmentA complete Android and iOS app from one TypeScript codebase, with the backend and release pipeline it needs.Read more
- iOS & Android appsOne app that feels right on iPhone and Android — and gets through App Store and Play Store review.Read more
- Push notifications & FirebaseNotifications that actually arrive, Firebase set up properly, and fixes that reach users without a store release.Read more
- MVP apps for startupsFrom an idea to a first version in real users' hands — scoped tightly, built to grow.Read more
- React Native developer in SuratBased in Surat — available to meet businesses in Surat and work with teams across Gujarat.Read more
- Hire a React Native developer in IndiaA remote React Native developer in India for teams in the US, UK, Europe, Australia and the Middle East.Read more
Tell me about your app.
What you're building, who it's for, and where it hurts today. I read every message and reply by email.