Im really amazed with this ap and its price. I build custom bicycle frames and use Dartfish for rider fits and frame design. Two years ago I (over) paid $1,000 for the PC-based version. This app does just about everything I need it to do for a mere $5. And, while Im a bit upset at having paid $1,000 for the "real" software, I applaud Dartfishs ability to make an VERY usable ap out of it. Taking video and editing it in one place really makes my life easier! Well worth the price of entry.