If you want to cancel your subscription to the Boomerang TV network on your iPhone or iPad, here’s what you need to do:

1. Open your iPhone or iPad’s Settings app.
2. Tap iTunes & App Store.
3. Tap your Apple ID at the top of the menu.
4. Tap View Apple ID.
5. Enter your passcode or use Touch ID.
6. Tap Subscriptions.
7. Tap Boomerang to see information about your subscription.
8. Tap Cancel Subscription.
9. Tap Confirm to confirm that you want to cancel your subscription to Boomerang.

That’s it! You’ve successfully cancelled your Boomerang subscription on your iPhone or iPad.

Note that if you subscribed to Boomerang at Boomerang.com, you’ll need to follow a different set of instructions to cancel your subscription.