ScreenPop

ScreenPop is a special lock screen which not only lets you draw on it but also gives you the ability to automatically share these doodles with your best friends, family, and acquaintances.

With ScreenPop, multiple users share a single lock screen that can be edited however you want. You can also use it to send photos to your friend so it's the first thing they see when they unlock the device.

ScreenPop also includes editing tools like the ability to draw and erase with your fingertip using different tools such as a brush, eraser, or pen. You can also use different sizes and colors to make shared works of art.

Another interesting feature is the ability to upload photos from your device as a background on which to draw. Of course you can also just take pictures.

ScreenPop is a fun customization tool for Android that you can use to surprise your friends with pictures whenever you want.