The popular and powerful Cerberus anti-theft application for Android is free today thanks to a special promotion with AppGratis
The application is one of the most powerful and cost-effective Android security applications you can get. It aims to offer the best protection it can, even with an option to hide it completely from the App drawer (rooted only).
For today only, you can get a permium account for free (a €2.99 value) by simply registering. If you want to keep up with new promotions, install the AppGratis app from here:
And for Cerberus itself you can install from Google Play here:
Although, if you want more security you will need to direct to [their website and download the flashable APKs](https://www.cerberusapp.com/download.php) or [install from ROM manager](https://play.google.com/store/apps/details?id=com.koushikdutta.rommanager)