Good first start
The only feature I would like to see them add is passbook/wallet support. It would be much easier to pull up my membership card from the wallet when the phone is locked than to unlock my phone, hunt for the app, and then tap on membership card. I realize this is the quintissential "first world problem" type review, but since Apple offers the wallet and other loyalty/membership cards work in it, I think this would be a nice build.
jonstahler about
LA Fitness Mobile, v3.5.3