It'd be cool if Panic could clarify a point made in this article which states that delay of detecting whether or not the device has left a region is around 10-15 minutes. Seems like a sizable chunk of time for a clock-in-out app.
Entering region is super responsive (aprox. few seconds). Exit the region might take up to a minute+.
If you are building smart alarm-clock it is much better to detect if you entered the bathroom or kitchen than detecting if you left bedroom.