I've played with the face app a bunch. It's a real mixed bag, and I am afraid it sets me up for disappointment. That being said, the face app did give me a real booster, having a picture of myself in femme appearance. It made it seem more real in those early days. Now I think it looks more unreal but cest la vis.
Side note: one of my face app pics was the spitting image of my sister as a teenager. It was eerie. But I guess that's bound to happen when you take dozens of them a day.