I'd second Pocket Brewer
but then again I'm a little biased being that I'm the developer/owner of Pocket Brewer. I appreciate you using my app lostboysbrew. If you ever have any suggestions on how to make it better drop me a line.
I tried out Brew Master. Whoever did that one is way more graphics centric than I am. Did make me think I need to pre-load some recipes in to Pocket Brewer though.