I've created an app called TripSplit that's meant to solve a simple problem: keeping track of who owes who money when you're traveling with your friends. As a frequent traveler, I've experienced this problem first hand many times. The design of this app is based off that experience, and I've used development versions on trips to great success. Now I'd like to see what other people think.
Any feedback is greatly appreciated.
http://itunes.apple.com/us/app/tripsplit/id349850196?mt=8
Here are some promo codes that will let you download it for free (I'll add more if needed):
X66YTMF339JM
PM7L4K4JRWRN
APAEA4RNPL9P
FKF4NTL6XAKA
LMJY67XK4XRT
HPFFWXFNR777
9XX3J7THTXMR
94LJK3TM7JAH
R3RRHFPMRNYL
WM77KAWN4TJA