Changing your Google password
If you would like to change your Google password, e.g. to prevent someone who had it from accessing your account or to find out which programs access your Google account, you may have to change it in a few places:Google's security page: https://www.google.com/settings/security. Just click on "Change password" to change your password.
CalenGoo doesn't use that password. Instead it got an access token from Google when you signed in. To revoke such access tokens just click on "Manage apps". There you can see which programs have access to your account.
Additionally you might have created "application specific passwords". You can review and remove them under App passwords.
