Habitnow is the first todo list with a key feature I've been looking for: to-do items that are automatically created at certain times. As such it is the best such app I've ever used. The only problem is that the author made no provision for hiding completed items. They just hang around cluttering the list--the best it does is move them to the bottom. I find it very odd that anyone would want to stare at completed to-do items. Certainly that shouldn't be the default, but there it is.