Boomerang installs an app and a Device Profile on a child's iOS device. The Device Profile is located under your child's device Settings app.
Here's how to delete our app completely from your child's device.
1. Hold+tap on the Boomerang app > once it shakes > tap the X
2. Go to Settings > General > Device Profiles > Boomerang Device Profile and remove it
That's it! Now your child's device will be back to normal and if any app controls were applied by Boomerang, apps will reappear.