We can’t really avoid our friends or family members in borrowing our phones and there are apps that we don’t allow particular access like our phone settings, email app, market app, mobile banking app. Basically you don’t want particulars in accessing your apps. This is where APP lock comes in.
APP Lock is a FREE App that can protect your app in two ways either using a password or pattern locks. It is easy to use, just launch the app, configure your password and pattern lock and it will give you the list of apps installed. From there you can just slide the lock option to open or lock the app. It also protect itself from unauthorized access by locking the system settings and it prevents uninstallation of all the installed apps.
Download App Lock: Here