You can cancel the subscription anytime you want.
iPhone/iPad:
Simply go the settings on your iPhone/iPad, click on the Apple ID, click on subscriptions, look for Upper Inc. Route Planning App, and cancel.
If you want more information:
Please go through the below link which helps you to cancel the subscription.
https://support.apple.com/en-in/HT202039
Android Devices:
Uninstalling the app will not cancel your subscription.
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.
Please go through the below link which helps you to cancel the subscription.
https://support.google.com/googleplay/answer/7018481?co=GENIE.Platform%3DAndroid&hl=en