Well, like anything this app is only as useful as you're willing to let it be.  BUT, if you are committed to either making or breaking (or both!) any habit you can think of, then this little jewel of an app can help you do that.  The idea of "streaks" may seem trivial to some, but we all crave this at some level because it clearly marks out your accomplishments in a tangible way.  When you see you have X days of success, you are that much more likely to overcome the impediments you may face.  What's more, this program is highly flexible in the ways you can track any given habit.  I have yet to find a habit and pattern I couldn't set up.  The app is free, although I paid for the premium version because 1) I HATE ads and 2) I liked the flexibility of data export, so just try it and you may find that it changes your life for the better.