Peep Guard is an Android app developed by Informationsea that aims to protect your phone's privacy from unwanted peeping eyes. It is a utility tool that provides a pattern overlay to your screen, making it difficult for anyone to see what you are doing on your phone.

The app is easy to use and has a simple interface. It offers various pattern designs to choose from, and you can also adjust the opacity of the overlay according to your preferences. However, the app warns users to be careful when changing the opacity as it may cause the phone to malfunction.

Overall, Peep Guard is a useful app for those who value their privacy and want to keep their phone activities hidden from others. It is free to use and is available on the Google Play Store. It is important to note that the app is provided without any warranty, including implied warranties.