Pro version of this apps : https://play.google.com/store/apps/details?id=dinostudio.android.vibrateforeverproThis application will make you phone vibrate and you will love it.It's simple tool to help you love every where with android device.Compare with other apps: This apps can still vibrate when the screen is off.And you can setting the level, time, vibrate type with nice design.Caution: This is not an app for medical use!Enjoy it with fun.