Property search/MLS apps on a smart phone? C'mon guys, you must be joking. The screen is way too small and the data set that displays in mobile apps is far, far, far too limited. Just not useful. I want to enjoy my good eyesight for another 30 or 30 years. I'd never do property search on anything smaller than my iPad.
The one app I can't live without is the powerOne calculator. I use it daily for quick and easy land area conversions, mortgage payments, cash flow, breakeven, cap rate, and even adding & subtracting.