I like that the app in simple. I turned off the motivational quotes, so all I see is the calendar. And that's all I need to see! One thing I would add, though, is the ability to add exception so missed days don't count against my streak. One of my goals is a daily activity that I can only do at home. When I travel, I miss those days. But I did it every day I was able (i.e. every day I was home), so it's a bit of a downer to be penalized.