Waiting for App Store or Google Play approval for every small fix slows down development. Expo Updates allows JavaScript and asset changes to be delivered over the air, so users get the fix on next launch without installing a new build.

Used correctly, it shortens release cycles from days to minutes. Used carelessly, it can push a broken bundle to every user at once — so the workflow matters.

What OTA updates can and cannot do

Expo Updates distributes the JavaScript bundle and static assets independently of the native binary. That covers most day-to-day changes: UI fixes, logic changes, copy updates.

What it cannot ship is anything native — a new expo install package with native code, a permission change, or an SDK upgrade. Those require a new store build.

Publishing an update is one command:

eas update --branch production --message "Fix checkout validation"

Use runtime versions to stay compatible

A JavaScript bundle written against new native code will crash on an old binary. Runtime versions prevent that — an update only reaches builds with a matching runtime:

// app.json
{
  "expo": {
    "runtimeVersion": { "policy": "appVersion" },
    "updates": { "url": "https://u.expo.dev/your-project-id" }
  }
}

When you add native code, bump the runtime version. Old clients simply stop receiving incompatible updates instead of crashing.

Roll out gradually and watch crashes

Do not push to 100% of users at once. Use branches and channels to release to a subset first, watch crash reports (e.g. Sentry), then promote:

# promote a tested update from staging to production
eas update --branch staging --message "Release candidate"
eas channel:edit production --branch staging

If something is wrong, republish the previous bundle — rollback is just another update.

Conclusion

Expo Updates is one of the strongest features of the ecosystem. Combined with runtime versions for compatibility and gradual rollouts for safety, it enables faster mobile releases without giving up control over what reaches your users.