VFR Apps
When going flying it's important to know how long you can fly with the fuel you have, and what the fuel weights. And when done flying you need to specify the duration of the flight for the logbooks. Being a pilot myself, I created two small iOS apps to help me convert fuel and calculate durations instead of having to make tedious manual calculations. Making these apps gained me an hands on understanding of how iOS interfaces are constructed and concepts like auto layout etc.
Get VFR Fuel and VFR Time on iOS Appstore