The Navy Federal Credit Union mobile banking app gives you what you would expect. You can find service locations, check your accounts, make payments and transfers, and check current rates (saving, mortgage, etc.). There are your standard tools; loan calculators, a currency converter, and for some reason, a tip calculator. There isn’t much more to it. Besides being pretty bare bones, the app was designed for the iPod so you have to expand the app to use the full screen. If you are a member of NFCU, this will give you what you need but not much else.
The default percentage on the tip calculator is 12%. NFCU is just as generous with their mobile app offering.