This app claims to be evidence based, but there are several evidence based principles it does not follow: - Measure progress (Harkin et. al, 2016) - Set specific/hard goals (Statham & Locke). Yes, you are asked to visualize a goal clearly, but the app does not emphasize the hard part. You can also see on some of the screenshots that this principle is not emphasized (i.e. one of the goals is «get support») - Set mastery goals (Utman, 1997) This app has been made with MCII method in mind, but there are some new meta analyses that indicate MCII to have a weaker cohens d than other methods.