Why habit tracking apps alone can't help you keep your New Year's resolutions

• Many rely on a “streak” feature: they track how many consecutive days you’ve completed the habit;
• Other apps offer accountability features to pressure you into completing your goal; 
• Some apps turn habit formation into a game: The app rewards users who complete their habits with badges and other virtual incentives.

Habit apps can work, but only if you actively monitor the data from the app each day and use it to analyze how you can change:  if you actually use the device and take its data and turn that data into knowledge, then it can actually improve your odds of changing.

“There is not an app that gives you some magical ability to change. The way that you change is you spend the time necessary to look at the change you want to accomplish, to try and figure out each day why you’re getting closer or farther away from it, to give yourself rewards in order to encourage that habit to thrive, and then to actually commit to it and to make that data into actual knowledge about why you behave the way that you do.” - Charles Duhigg