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SPECIFICTION
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EAS Observe

expo.dev

From $19/mo Free plan WebiOSAndroid
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Spec score 8.3 #11 of 23 in Mobile App Monitoring

What it is

EAS Observe is a production performance monitoring service for apps running on real devices and conditions. It records cold and warm launch times, time to first render, time to interactive, bundle load time, and EAS Update download time. Measurements can be compared across app versions and over-the-air updates to help identify regressions. Expo Router and React Navigation integrations add render and interactive timings for individual routes. Apps can send user-defined events with Observe.logEvent and analyze them with performance data. Results appear in the EAS dashboard or can be queried from the terminal with EAS CLI commands. EAS Observe supports Android, iOS, and tvOS, but requires Expo SDK 55 or later and an app linked to an EAS project. It is unavailable in Expo Go and needs a development or production build. JavaScript error and native crash reporting are preview features. Plans include Free at $0/month, Starter at $19/month plus additional usage, and Production at $199/month plus additional usage; Enterprise pricing is custom. Retention is 90 days.

Spec sheet

Purpose
EAS Observe monitors performance in production across real devices and conditions.Read 2 Oct 2026 · docs.expo.dev
Security
Expo says data is encrypted in transit and at rest and that Expo has SOC 2 Type 2 attestation.Read 2 Oct 2026 · expo.dev
Support
The product FAQ directs users with questions or who need human support to contact Expo’s team.Read 2 Oct 2026 · expo.dev
Custom events
Apps can log user-defined events with Observe.logEvent and analyze them alongside performance data.Read 2 Oct 2026 · docs.expo.dev
Dashboard and CLI
Metrics are available in the EAS dashboard and can also be queried from the terminal with EAS CLI commands.Read 2 Oct 2026 · docs.expo.dev
Data collected
The product page says it collects performance timing data, device model, OS version, app version, and an anonymous install-scoped ID, and says it does not collect personally identifiable information.Read 2 Oct 2026 · expo.dev
Data retention
The pricing page lists 90 days of data retention for all EAS plans.Read 2 Oct 2026 · expo.dev
Errors
The documentation describes JavaScript error and native crash reporting as preview features.Read 2 Oct 2026 · docs.expo.dev
Expo Go
EAS Observe is not available in Expo Go; it requires a development or production build.Read 2 Oct 2026 · docs.expo.dev
Navigation integrations
Expo Router and React Navigation integrations provide per-route render and interactive timings.Read 2 Oct 2026 · docs.expo.dev
Release tracking
Metrics can be compared across app versions and OTA updates to help identify regressions.Read 2 Oct 2026 · docs.expo.dev
Requirements
EAS Observe requires Expo SDK 55 or later and an app linked to an EAS project.Read 2 Oct 2026 · docs.expo.dev
Startup metrics
It tracks cold and warm launch time, time to first render, time to interactive, bundle load time, and EAS Update download time.Read 2 Oct 2026 · docs.expo.dev
Supported platforms
EAS Observe supports Android, iOS, and tvOS, with metrics filterable by platform in the dashboard and CLI.Read 2 Oct 2026 · docs.expo.dev

Plans and prices

Free Free $0 /MONTH 100K events/month · 90 days data retention Read 2 Oct 2026 · expo.dev
Starter $19 a month $19 /month +additional usage cost 500K events/month, then usage-based pricing · 90 days data retention Read 2 Oct 2026 · expo.dev
Production $199 a month $199 /month +additional usage cost 500K events/month, then usage-based pricing · 90 days data retention Read 2 Oct 2026 · expo.dev
Enterprise Priced on request Custom 500K events/month, then usage-based pricing · 90 days data retention Read 2 Oct 2026 · expo.dev

Every EAS Observe plan and price →

Strong points and limits

Strong points

  • Tracks launch, render, interaction, bundle, and update timings
  • Compares metrics across versions and OTA updates
  • Supports route timings for Expo Router and React Navigation
  • Includes custom event logging and CLI queries
  • Free plan includes 100K events monthly

Limits

  • Requires Expo SDK 55 or later
  • Unavailable in Expo Go
  • Crash and JavaScript error reporting are preview features
  • Paid plans add usage-based costs

Who it suits

It suits teams building Expo apps that need production performance measurements across supported platforms and releases. It requires an EAS-linked project and a development or production build.

Verdict

EAS Observe covers detailed production timing data, release comparisons, route measurements, and custom events for EAS-linked apps. Check its SDK, build, platform, event-volume, and preview-feature limits before choosing a plan.

Where Specifiction places it

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