To sign out of your Grindr account you will need to remove the Grindr app from your device.
To do this follow the steps below:
1. Open the Settings app on your device
2. Tap Applications > Manage Applications > Grindr > Uninstall
3. Restart your device
1. From the Home screen, tap and hold Grindr
2. Tap the black (x) icon when it wobbles
3. Tap Delete to confirm
4. Restart your device
Please Note: Your chat history will be lost during this process.