Uploaded June 2025 | Updated September 2026, 1 hour ago

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Performance isn’t about FPS. It’s about how your users feel.

In this talk from React Universe Meetup SF, Tim Golen, Director of Engineering at Expensify, breaks down their performance strategy for React Native: tracking only what affects the user experience.

You’ll learn:
- Why measuring *all* interactions is a waste
- How to define UX-focused metrics that make sense
- What KPIs Expensify tracks weekly (and why)
- How they use StatsD + Grafana to surface regressions
- Why error page counts and skeleton load durations matter
- How remote caching via RNEF lets them ship performance fixes 90% faster

Because you don’t need more metrics; you need better ones.

Get the Ultimate Guide to React Native Optimization 📘 clstk.com/3ZKKNHM
More performance insights from Callstack 📈 clstk.com/3ZKKVHg
Need help with React Native performance? We’ll help you identify what’s wrong and fix what matters—fast 💡clstk.com/4mK95f1
Follow Callstack on X 🐦 https://x.com/callstackio