If you cant figure out how to cancel your subscription because the app makes it very unclear, here is how you do it!
-Go to your phone settings.
-Click on iTunes and App Store.
-Click Apple ID and sign in.
-Once you do that there will be a section that says subscriptions
-Click that, scroll to the bottom and cancel!
LifeLongDrummer1 about Yarn - Chat & Text Stories, v1.4.0