That app is certainly quicker than opening my clock app on the phone for the exact time - very useful.
After a few months with mixed results from my bitsa (made from bits from Astroboot) Alt-Az Synscan, I thought I would include the following:
1) Yes, level is very important but I have had good results from the built in spirit level.
2) As my mount did not come with a telescope, I was using my SW 130P (900FL) that came with my EQ2. I think this scope is pushing this mount to its limits, mainly due to the length. I have just tried my little SW100 Heritage reflector on it and it is much happier.
3) Make sure the alignment stars you use ARE actually those stars, even with a 25mm Plossl this isn't immediately obvious. This was one problem I had last night *SLAPS FOREHEAD*.
4) My mount does not immediately start to track accurately on GOTO. Last night, I had to "tinker" with the position on the handset for a little while before the tracking settled down each time (yes, this was some time after the confirmation BEEP).
5) My home position is indeed flat and North (although I am not sure if this is required or not).
Although I have a great urge for a Celestron Evolution, I think this mount will keep me going for a little while yet.