I think the app is very good, has helped me to keep track of my habits. However I wish there was a function whereby you could postpone a habit for something out of your control i.e. not going to the gym because you're on holiday. This although a break from the habit doesn't feel like it should affect the moments when you are focused and in control of keeping the habit. Also how is the success percentage measured if you only have to do the habit a certain number of times a week?