EAS Observe is a performance monitoring tool built for Expo and React Native. It measures app startup time and per-screen time-to-usable on real user devices, and reports metrics through the Expo dashboard. Sessions include device context such as model, OS, country, network type, thermal state, and frame data, and each native build and EAS Update is marked on charts so teams can see which release affected performance.
EAS Observe
Performance monitoring built for Expo and React Native
EAS Observe Introduction
Key Features
- Automatic startup and per-screen performance measurement on real user devices with minimal instrumentation
- Markers for every native build and EAS Update to track performance changes across releases
- Full device context per session, including model, OS, country, network type, thermal state, and frame data
- Direct integration with the Expo dashboard via a simple library install and root layout wrapper
- Free plan covering 100K events per month
Use Cases
- Monitoring startup time of Expo and React Native apps in production
- Identifying which app release or EAS Update impacted performance
- Diagnosing slow screens using device, OS, and network context
- Tracking performance regressions across devices, regions, and network conditions
Why Startups Use It
Startups building Expo and React Native apps can add production performance monitoring with minimal setup, see how each release affects startup and screen performance, and start on a free plan without upfront cost.
Alternative Options
Sentry, Firebase Performance Monitoring, Datadog RUM
Frequently Asked Questions
What is EAS Observe?
EAS Observe is a performance monitoring service for Expo and React Native apps that measures startup time and per-screen usability on real user devices.
How much instrumentation is required?
You install the library and wrap your root layout; startup metrics arrive without additional manual instrumentation.
Does EAS Observe have a free plan?
Yes, the free plan covers 100K events per month.
Which releases are tracked?
Every native build and every EAS Update gets its own marker on the performance chart.
More About EAS Observe
PricingPaid
Listed DateSep 02, 2026
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