I've been doing Noom for four weeks and I really like it so far. Besides the fact that I've lost about 12 pounds(!), I'm learning a lot from the daily articles, and the psychology-based "tips and tricks" work well for me (note: I am a psychologist, and the principles they are using are legit!). I like the support from the coaches and especially from my online "team" of customers. I've listed a bunch of complaints below, but I've decided they are minor relative to what I'm learning and how optimistic I feel about being able to maintain what I'm learning and practicing now. And I don't think I've ever lost 12 pounds in four weeks without basically starving myself and feeling awful...But I feel great, I love most of what I'm eating, and the new habits are sinking in.
The app itself has some weak points. The calorie counts are often incorrect and the interface for entering numbers (scrolling instead of typing it in) is a pain in the ever-smaller rear end. If you're on an Android, you can't enter a whole recipe, so you either have to estimate or go to another site, enter the whole thing, and go back with the info to Noom. When you go to enter a food that's not in the database (and many things aren't yet), you can't enter the decimals in the number for grams of fat. It'd be nice to be able to look at a food's nutrition info without going into the section where you are actually logging your meals...But as far as I know, you can't. They've got recipes, which is helpful for adjusting to their way of thinking about what to eat and why - but the recipes are sometimes missing steps, and they tend to be pretty bland. Feels like the recipes and many of the examples in the failure articles are geared toward fairly young adults who work too much and haven't learned to cook for themselves.
Bottom Line: Yes, I would recommend this to a friend