As someone who has not been able to transition, both the FaceApp and Snapchat filters have been a wonderful gift to me.
I realize it is not exactly how I would look if I transitioned, but it gave me the first idea of what I would look like as a woman. There is enough realism that I could see a strong resemblance to my mother. My daughter also commented on the resemblance.
Of course, it would be much better if I could live real life as a woman but since that seems unlikely, the Snapchat filter is one place I can go to see me as I imagine myself to be.