You can disconnect a mobile app, game, or other online service connected to Google+ at any time using an Android device.
- On your Android phone or tablet, open the Google+ app .
- Tap Menu .
- Tap Settings, then tap your account name.
- Tap Apps with Google+ Sign-In, then tap the name of the app you want to change the settings for.
- Tap Disconnect.
Note: It may take up to an hour for the app to disconnect.