Don"t work for OS 3.x

I"m very disappointed of this app. The new update 1.6 say said that cany support OS 3.x. But acturally it cannot. After I install this and use it on my iPhone OS3.1.3. once I press the-(set a pin) the app quit and return to springboard.

Siusiumui about GPS Alarm Clock(Best App Work with GPS)