It's free, you just need to sign in, but it's very stingy on how many photos you can edit. It's like one photo every two days. You can use your google account to sign in.
If you want to use it more there are subscriptions. For anyone doing this kind of stuff professionally it probably makes sense.
I think I signed in with google but only got two tries... but thanks

Using it professionally paying for it makes sense for sure. If I posted pics of myself on the net and used it to touch up my pics, say reduce bags under eyes, would it make me a phony?

I'm not a professional obviously but for my two tries I used a promt of someone's pic saying "make look 10 years younger"... is the edit easy to detect for a pro?
I told a woman I was arguing with over IRL beef that she's inauthentic because she can't even post a pic without a beauty filter... she didn't like that.