It's a great app and has definitely helped me maintain my habits. I had been gifted premium early on, but I've found that the features have disappeared and I'm only seeing the base version. I like it enough that I want to buy it, but I worry about whether it will keep the features based on my experience and other reviews. I've also found a bug: when I have a goal set to 3x a week as "success," the app doesn't recognize when I've had a successful streak and always shows as 0 successes in the streak section, whereas it's at 80% in the "percent success" section and many weeks of meeting my goal.