This is the perfect app for parents who are fed up with being ignored or having their calls screened when trying to get in touch with their teen. Once installed on your teen's Android phone, if calls or texts from specific phone numbers are ignored, the phone locks up. It can't call, text email, IM or check social media until the user enters a code to unlock the device. The phone can only call Mom or Dad (or any other predetermined care-giver...as well as 911) to check-in and get the unlock code. So far, its only available for Android ($1.99 per device) but an iOS version is in development.