A free app for Android, by Geeks.Lab.2015.

If you want to protect the applications that you have downloaded on your phone, then you should download this application called App Lock – Privacy Vault. App Lock – Privacy Vault is the best for you to download because it has different options for you to lock your apps like pattern, PIN, and more. You can choose any apps that you want to lock for you to stay protected and secure. Moreover, App Lock – Privacy Vault has awesome features for you to explore and discover like an easy-to-use interface and touch controls. You can share this with your friends and family so they know more.