App Performance Optimization
A slow, janky or crashing app loses users. We find out where your app spends its time and memory, fix the biggest problems first, and show the improvement with before-and-after measurements.
We work on React Native, React and web apps, whether we built them or not.
What's included
Our app performance optimization services
Performance audit
Profiling startup, rendering, network and memory to find the real bottlenecks.
Startup time
Lazy loading, smaller bundles and deferred work so the app opens faster.
Smooth UI
Fixing dropped frames, heavy re-renders and slow lists.
Memory & battery
Finding leaks, oversized images and unnecessary background work.
Crash & bug fixing
Reproducing and fixing crashes from your crash reports, worst first.
Web performance
Core Web Vitals, caching and bundle-size work for web apps.
Technologies
- React Native
- Hermes
- Flipper / React DevTools
- Xcode Instruments
- Android Studio Profiler
- Lighthouse
How we work
A clear path from problem to product
Understand
Understand the problem, users and requirements.
Plan
Define the product strategy, architecture and implementation approach.
Build
Develop the product using modern technologies and clean engineering practices.
Launch
Test, optimize and release the product.
Improve
Use feedback and data to continuously improve the product.
FAQ
App Performance Optimization: common questions
Can you speed up an app you did not build?
Yes. Most of our optimization work is on existing codebases. We start with an audit and a prioritized list of fixes.
How do you measure improvement?
We measure startup time, frame rate, memory and crash rate before and after each change, on real devices in release builds.
Do we need to rewrite the app?
Rarely. Most performance problems are fixed with targeted changes, not rewrites.
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