On the whole, the app is excellent. Just the act of tracking cut my cigarette usage in half. My criticisms of the app lie in its interface and usability. The history and month views are basically useless because they are too detailed. When Im looking back, I want to see just a snapshot- how many I smoked/craved and what my budget was- and not every time I logged in (although, on the current day, knowing when I check in is helpful because it helps me make sure I log all my smokes). Its very difficult to see the past totals the way the interface is now. It wouldnt be a bad thing to have the option to still see the detail, but it blows my mind that the snapshot isnt easily available. The graph is hard to read to get an exact count. Also, the messaging (why you want to quit, etc) is pretty much pointless you add it in the beginning but never see it unless you navigate to the settings. With that said, the messages that pop up when you log a craving are really helpful. This is overall a great app, but it could be improved. Im looking forward to being totally smoke free by my quit date, and I attribute even cutting back exclusively to this app. I wouldnt let any of my criticisms steer you away from downloading the app if you were considering it because it is still useful.