Subscription may be managed and auto-renewal may be turned off by going to your iTunes Account Settings or Play Store Account Settings after purchase. You only need to do this once, either from your mobile or computer.
On your iPhone:
1. Open the Settings app
2. Tap on your name
3. Tap on Subscriptions
4. Tap on Perfect Play
5. Tap Cancel Subscription
On your Android phone:
1. Open the Play Store
2. Tap on the three-line menu in the top-left corner
3. Tap on Subscriptions
4. Tap on Perfect Play
5. Select Cancel Subscription at the bottom of the page
6. Enter your reason for cancelling and then confirm the cancellation
Note: If you don't see an option to cancel your subscription, that means that you have already successfully cancelled that subscription.