How To Manage Your Subscriptions

iPhone/iPad | Apple

Manage your subscriptions

Go to Settings > [your name] > iTunes & App Store.
Tap your Apple ID at the top of the screen, then tap View Apple ID. You might need to sign in with your Apple ID.
Scroll to Subscriptions, then tap it.
Tap the subscription that you want to manage. …
Use the options to manage your subscription.

Manage through Apple.com
https://support.apple.com/en-us/HT202039

Android | Google Play

Cancel a subscription
Uninstalling the app will not cancel your subscription.

On your Android phone or tablet, open the Google Play Store Google Play.
Check if you’re signed in to the correct Google Account.
Tap Menu Menu and then Subscriptions.
Select the subscription you want to cancel.
Tap Cancel subscription.
Follow the instructions.
If you have a subscription with an app and the app gets removed from Google Play, your future subscription will be canceled. Your past subscriptions will not be refunded.

What happens after you cancel
When you cancel a subscription you’ll still be able to use your subscription for the time you’ve already paid.

For example, if you buy a one-year subscription on Jan. 1 for $10 and decide to cancel your subscription on July 1:

You’ll have access to the subscription until Dec. 31.
You won’t be charged another yearly subscription of $10 the following Jan.

Google Play Support
https://support.google.com/googleplay/answer/7018481?co=GENIE.Platform%3DAndroid&hl=en