These subscriptions are managed by Apple and Google so you will need to cancel the subscription purchased in the app from your phone or tablet. This will terminate access at the end of the paid period you have agreed with Apple or Google. Please see the links below for how to do this for each platform.
To access Premium content in the app once your in-app subscription terminates, sign in to the app with the same details you use for accessing Premium on the website.
If you have not yet unlocked your free Herald Premium access, you can activate it here.
iOS – Cancel subscription
https://support.apple.com/en-us/HT202039
Android – Cancel subscription
https://support.google.com/googleplay/answer/7018481
