For our mobile apps (Google Android & Apple iOS), we do not collect and store any personal data from you. We only collect necessary info for push notifications, such as device-id, device-language, app version and notification id.
Some apps may use Google’s Analytics (also known as firebase) and is covered here.
Some apps may use Apple’s Game Center and is covered here.
Certain apps which require user to create an account, will only have certain data stored.