You can cancel your premium subscription for both SAT Up and ACT Up by following one of the follow ways below based on the mobile device you're using.
For iOS users:
You can manage and cancel your subscription by accessing your iTunes account here . Once you open this link on your iOS device, you will be taken to the App Store. After entering your Apple iTunes password, you will be able to manage your subscription. You can turn off "Auto-Renewal" to avoid future charges.
For Android users:
You can manage and cancel your subscription by following these steps:
1. Visit Google Wallet (https://wallet.google.com/manage/w/1/#subscriptions:).
2. Along the left side of your screen, select More > Subscriptions.
3. Select Cancel subscription.