I like this app, I have used it for a while now and it helps. Only reason for 4 stars is that the percentages are frustrating. I managed 122 days straight but it won't change from 98%. I think once you do the full 66 days you should get 100%. Also, would love to be able to highlight a day in the future as a milestone, just different colour so I can say 50, 100 days etc, as a motivator. It's great for a free app. We'll done to the devs on this.