- Open the Google Play Store app
- Tap the three horizontal lines in the upper left corner of the search bar to open the navigation drawer
- Tap Subscriptions
- Tap your Squid subscription (if you don't see it, make sure you have the correct Google account selected in Google Play)
- You should now see an option to cancel
For more information about what happens after you cancel Squid Premium, see What happens if I cancel Squid Premium?