With the exception of a couple of progress shots I take in the gym, I really don’t like to be photographed anyway so the app would be lost on me. As for it’s use for other people, sure, why not if that’s what a person wants to do. The image we see in the mirror is always different than the way others see us so might as well have fun and dream on. As long as the photoshopped image isn’t used for some nefarious purpose like acquiring a date on a singles site, the only lie that is being told is to one’s own self and let’s face it, the easiest person we can deceive is indeed ourself.
Someone humorously suggested that if the image we see in the mirror is much more attractive than how others see us, why don't we just take a picture of the image in the mirror. Oh, if it only worked that way.......
Well, I have found out that people will put a picture of themselves on a forum or even Facebook that is many years old. I remember, on a different senior forum, after seeing a lady's picture in a "Post A Picture Of Yourself" thread, she looked much younger than a senior, even a young senior at 50/55. I sent her a PM and she replied stating the picture was taken some 25 years ago and had no current picture of herself.
This one is free and very nice, about as close to actually using Photoshop and the tool layout is just about the same as Photoshop. You can size your things if needed and also do artwork if you like. It has a good list of filters that you would not expect from anything but Photoshop or The Gimp. Another good paid choice that does not require a bank loan would be Serif Infinity Photo and Serif Infinity Designer. Somewhere in that 49 to 50 dollar price range to own it. Nothing but the best from Serif. Here is the online tool and you need nothing else to take care of your slightest dreams of working on your images. https://www.photopea.com/