Great in a lot of ways, but a huge drawback is that you can't edit the start date or previous inactivated/activated dates for a habit. So, if you've been doing a habit for a few weeks before you add it to the program, you can't record those two weeks of success in the program. Or, if you intentionally stopped a habit for a time period, but didn't inactivate it during your chosen time off, your percentage is dragged down.