Could be good but to many bugs

I agree with the previous comment (Sarawakdave). I just download the last update but it works as poorly as the previous version.

Here are the app problems:
1) The next month button dont work. This is not a user finger problem as you suggested in your update commenst, its a developper problem (we can see the button glow when its pressed but nothing else append).
2) Strangely, the previous month button do something, but it jump 2 months in the past each time we press it (same behavior when we click on calendar).
2) The moon representation is for the north hemisphere in the today tab, but its for the south hemisphere (inverted) in the calendar tab. No option to enter our coordinates or to simply change the hemisphere.

For your information I have an iPhone 3GS with the 3.1 OS, please test and fix this bugs because for now this app hardly worth 1 and certainly not the $1 you ask for! Ill change my comment and evaluation if you send a working update. Thanks.

iPhone you about Moon Lunation with Phase Calendar