Version 1.6 has been approved by Apple! Get it here:
This version is mainly a bugfix release – we discovered that when Whereoscope is open but you press the Sleep button, it enters a state where it stops working. It still worked when you closed the app, but a handful of people were entering this state and getting pretty unhappy.
This version fixes that – it should work all the time!
In upcoming news, it looks like iOS 4.2 is finally going to be released by Apple, which means Whereoscope will soon work in the background on your iPads!