No web access Count calories. Bring awareness to your habits, emotions, and thoughts related to food. Slowly work to change them. That, in a nutshell, is the Noom weight loss program. Noom is a mobile app-based weight loss program with engaging content and a peer support group. It advertises coaching, but in my testing, this was an area that was disappointing. Compared with other weight loss programs, such as WW (formerly known as WeightWatchers), it's easy to use and much more focused on behavioral psychology. Although Noom has room for improvement, it's an excellent service and one of the more engaging weight loss apps I've tried.