Gym NinjaIn 2012, my buddy Alex Finlayson and I put our minds together to work on an iPhone app. Alex noticed people at the gym were still using pencil and paper to record their workout sessions, despite having a smartphone in their pocket for music playback. We worked together on interface & backend design, and implemented this in Objective-C.
Our aim was to minimize the effort required to log gym workouts on an iPhone. The result is an intuitive, thumb-based interface where we show data only when the user needs to see it.