This app suggests unlock patterns based on some basic algorithms.
The patterns in this app begin at the white dot. The arrows show the next steps in the pattern. The current pattern algorithm is shown at the top of the screen.
This app does NOT change your unlock pattern automatically. This cannot be done due to android security policies. You can change the unlock pattern by going to the "Security" section in your phone's Settings. A quick link to this can be found in the app by pressing the Menu button.