I haven’t tried this for big editing projects like full body shots, but I’ve been using it for professional headshots. I’ve got a round face that I’m insecure about, and the designers I was matched with were awesome. They’re real people that know how to make things look normal to other real people. Understand that this is not entirely free, as you need to invest money in the in-app currency, but I’ve had a couple of opportunities to earn currency for free.
Don’t be fooled by some of the examples, they can be a bit shoddy- the real results I got were excellent.