One that seems to be very actively supported by the developer, with an active user forum, and been around on other platforms for ages is Catamount's "Pocket Money". I have that downloaded for my iPad and, although I'm not using it in anger yet, it's looked pretty good so far. Another one I liked the look of from screen shots was Quantum Quinn's Day Bank but I just heard back fro the author today and, although an iPad version is planned (it's only iPhone right now), that's going to be a while away - he actually said 2011 in the email.a budget track and even a simple checking book type app.