Great, but sometimes sticky. – Shot Designer Review

Overall it's a great app for being free. Really helps visualize what shots you want especially with the playback feature that moves through the shot for you. But it sometimes slows down and does stuff you didn't press or doesn't do what you did press. Definitely not something for very quickly designing shots as you can get very detailed, but if you keep it simple then it works.
Review by Jvanallen on Shot Designer.