A friend sent me this and thought it was pretty neat, although I don't have an iPhone.
Ballistic is a fast, highly-accurate ballistic trajectory calculator and range companion for the iPhone. Ballistic calculates trajectory, windage, velocity, energy, and bullet flight time for any valid range, and can compensate for atmospheric conditions such as temperature, barometric pressure, humidity, and altitude. It's also much more than a basic trajectory calculator. With a vast library of over 1,000 projectiles, range estimation calculator, and a range log, Ballistic is a complete mobile companion for hunting or at the range.
Link Removed
Another friend that is an ex-green beret, honor grad of SOTIC....he mentioned it doesn't include
Coriolis Effect. They said they are adding this in a future version. I guess he knows what he's talking about. :laugh: