Expo Constants

The version code set by android.versionCode in app.json. The value is set to null in case you run your app in Expo Go.

The build number specified in the embedded Info.plist value for CFBundleVersion in this app. In a standalone app, you can set this with the ios.buildNumber value in app.json. This may differ from the value in Constants.expoConfig.ios.buildNumber because the manifest can be updated, whereas this value will never change for a given native binary. The value is set to null in case you run your app in Expo Go.

The human-readable model name of this device, e.g. "iPhone 7 Plus" if it can be determined, otherwise will be null.

The Apple internal model identifier for this device, e.g. iPhone1,1.

The version of iOS running on this device, e.g. 10.3.

The user interface idiom of this device, i.e. whether the app is running on an iPhone, iPad, Mac or Apple TV.

Returns expo, standalone, or guest. This property only applies to the managed workflow and classic builds; for apps built with EAS Build and in bare workflow, the result is always null.

A human-readable name for the device type.

The device year class of this device.

The standard EAS config object populated when using EAS.

The standard Expo config object defined in app.json and app.config.js files. For both classic and modern manifests, whether they are embedded or remote.

The standard Expo Go config object populated when running in Expo Go.

The version string of the Expo Go app currently running. Returns null in bare workflow and web.

An identifier that is unique to this particular device and whose lifetime is at least as long as the installation of the app.

true if the app is running on a device, false if running in a simulator or emulator.

Classic manifest for Expo apps using classic updates and the updates embedded in builds. Returns null in bare workflow and when manifest2 is non-null.

Manifest for Expo apps using modern Expo Updates from a remote source, such as apps that use EAS Update. Returns null in bare workflow and when manifest is non-null. Constants.expoConfig should be used for accessing the Expo config object.

The Info.plist value for CFBundleShortVersionString on iOS and the version name set by version in app.json on Android at the time the native app was built.

The Info.plist value for CFBundleVersion on iOS (set with ios.buildNumber value in app.json in a standalone app) and the version code set by android.versionCode in app.json on Android at the time the native app was built.

A string that is unique to the current session of your app. It is different across apps and across multiple launches of the same app.

The default status bar height for the device. Does not factor in changes when location tracking is in use or a phone call is active.

A list of the system font names available on the current device.