Catch performance regressions
before your users do.
perfbit instruments your React Native app with a single SDK call. Get per-build cold starts, jank rates, and screen vitals - so you know exactly which version caused the slowdown.
14-day free trial · No credit card required
Cold Start p50
284ms
↓ 22ms vs v2.2
Jank Rate
1.8%
↑ 0.3% vs v2.2
Crash-Free
99.6%
↑ 0.1% vs v2.2
Slowest screens this build
⚠ CheckoutScreen regressed 124ms in v2.3. Caught before reaching 80% of users.
Everything you need to ship fast, confidently
perfbit replaces the gap between “it works on my machine” and “users are complaining.” All metrics are collected automatically - no manual instrumentation required.
Build regression detection
Compare cold start, jank rate, and crash-free rate between any two builds. Know the exact version that caused a slowdown - before users leave a one-star review.
Per-screen vitals
Load times, frame rates, and error counts broken down by screen name. Find out which screen is slow before your users report it in the App Store.
Jank & frame tracking
Slow and frozen frame rates, measured continuously across every session. Know your frame budget status before you hit Submit for Review.
Network timing
API latency tracked per endpoint, per build. See instantly if a new release made your network calls slower - and by how much.
Cold start tracking
App startup time tracked per build, OS version, and device class. Catch the regressions that users notice the most - before they churn.
Crash-free rate
Session stability alongside performance data - in one place. Stop switching between Crashlytics and your spreadsheet to understand quality trends.
Up and running in 2 minutes
No dashboards to configure, no custom events to define. perfbit auto-instruments everything.
Install the SDK
One package. No native modules. No config files.
npm install @perfbitapp/rn-sdkInitialize in App.tsx
One line that instruments your entire app automatically.
PerfSDK.init({ apiKey: 'your-key', appVersion: '1.0.0' });Ship and watch
Your dashboard fills with per-build data as soon as real sessions come in. No manual instrumentation needed.
Full initialization snippet for App.tsx:
// App.tsx - add this once
import { PerfSDK } from '@perfbitapp/rn-sdk';
PerfSDK.init({
apiKey: 'your-api-key',
appVersion: '1.0.0',
});Your next build ships in minutes.
Will you know if it's slower?
Start your free trial today. No credit card. No setup headaches. Your first performance regression report is waiting.
14-day free trial · Indie from $12.50/mo · Cancel anytime