I used Noom for one month before discontinuing it.
I found the information helpful, and I appreciated that it was designed to do a little bit each day.
I found the focus on weighing in daily to be overwhelming and I found myself obsessing over it. I also felt like the coaching, groups, and notifications every morning was too much. (My phone was CONSTANTLY going off at work, particularly at times when I needed to be focused on something other than weight loss.)
I liked the idea of the support groups, but I was discouraged when one woman hit her goal weight within a week. (I'm trying to lose 30 lbs. That doesn't happen in a week.) I felt like other users weren't really in the same place that I am, even though Noom made it sound like they grouped similar people.
Noom isn't bad. It just wasn't for me.
Bottom Line: No, I would not recommend this to a friend