A lot has happened since the last review here. Time lapse works as a charm. I wouldn't want to use any other app for doing StopMotion. Check 'Bloody Snow' at http://homepage.mac.com/macnavi/index.html to see what you can do with this great app!
I've been using iStopmotion from the start and the greatest thing about this app is that the developers really listen to requests and feedback. Really any wish I had for the app has been "granted", so feels like it is an app specially made for me.