Features
MicroG implements the most-used Google Play Services APIs as free software, with no telemetry.
Cloud Messaging (FCM)
Receive push notifications from apps that depend on Firebase Cloud Messaging or legacy GCM.
Google Sign-In
Log into apps that require a Google account, including OAuth flows and ID tokens.
SafetyNet & Play Integrity
Pass attestation checks for banking, streaming and game apps that require them.
Maps API v1
Renders Google Maps v1 surfaces by proxying tiles, useful for legacy apps.
Location (UnifiedNlp)
Pluggable location backends — Mozilla, Nominatim, offline databases — without sending data to Google.
FIDO / Passkeys
Authenticate with WebAuthn passkeys, including caBLE hybrid flows from another device.
Cast, Wear, Auto stubs
Stubs for Cast, Wear OS and Android Auto APIs to keep dependent apps functional.
Tiny footprint
GmsCore is around 12 MB versus hundreds of MB for Google Play Services and bundled GApps.