Subscriptions on Google Play renew automatically unless you unsubscribe. If you don't want the subscription for your app to renew, you can cancel the subscription on Google Play.

1. Open the Google Play Store 

2. Tap Menu -> Account -> Subscriptions.

3. Find the subscription you want to cancel. 

4. Tap Cancel. 

Important: Uninstalling an app will not automatically stop your subscription. You must cancel your subscription to end your subscription. If you uninstall the app without canceling your subscription, you will still be charged. If an app you've purchased a subscription for is removed from Google Play, your future subscription will be automatically canceled but past subscriptions will not be refunded.

When you cancel a subscription you will still have access to your subscription for the remainder of time you have already paid for.