First of all, sorry you want to leave us! If this is because of problems then please contact email@example.com and we'll do our best to resolve any issues you might be having.
If you're sure you want to cancel your subscription then please be aware that doing so will not refund the balance of any time remaining on the subscription, it simply prevents the subscription from automatically renewing on the renewal date. You will also retain access to any subscription only features and content until the subscription period expires.
To cancel on iPhone: go to 'iTunes and App Store' in your phone's settings, then view your Apple ID and use the 'Manage' section to cancel your Zombies, Run! subscription. You can find more information about this on Apple's subscriptions page here.
To cancel on Android: open up the Play Store app, then go to 'My Apps'. You should see a tab labelled 'Subscriptions' there where you can select your Zombies, Run! subscription and cancel if you wish. You can find more information about this on Google's subscriptions page here.