Whipsnade, thanks so much for your work. I am liking #15 much more when I return to it. Couple of suggestions that I made on the public board. 1) Make this a white background, 2) I think the people facing each other looks more like a social network or dating app rather than a healthy/weight loss app. Another designer had a letter "H" that was fat, but was being constricted in the middle with a tape measure...while it wasn't great, it was trying to convey weight loss. Perhaps you can go with that?
Thanks again for working on this!