Stronglifts App

Used it for the year that I was doing Stronglifts -- I found it very useful. I bought the Power Pack, mainly just to support the developer, but it also came with some convenient features, such as a warm-up calculator, a plate calculator, and the ability to go to 3x5 or 1x5 at working weight (which you run into once the 5x5 volume starts to be killer). Nothing that you couldn't do with other, more general apps, but considering how much I spend on other stuff, $10 was mouse nuts.