I can read, I know the app is called "Vapor Trails", but when you open it and it appears on your Mac, it says "Vapor TRIALS." What? Learn to spell! No, I didn't read it wrong. Anyways, "Vapor Trials" fails not only for the spelling, but also for the... -1 Stars for spelling error -3 Stars for the so-called "low-processing power." One plane at the lowest speed, even no plane "trials" uses 2% CPU, which isn't a lot, but what happens when you use 15 planes (the max), super long trails and the highest speed? I don't want to know. Very good idea, but bad exceution.