Right. Except that you have to buy eyeglasses if you want those numbers. The app will not tell them to you, and the frames alone are $349, not counting lenses. Total price starts at $600 and goes up. So, no thanks. I'll pass.
I live in ex-USSR in one of the poorest republics. My mom bought recently nice eyeglasses for $3.50. The procedure is this: you name the type of lenses (+2 + 3 etc) and they give a bunch of eyglasses with different ocular differences. You chose one that works for you and then choose the frame.