this is not made by the mobile app, but by the computer. It's not that the mobile app can't be done, but it's troublesome to operate. It will take at least two and a half hours for these three pictures to be made into such a refined picture, which is not the original picture. It takes less than an hour to do this fine retouching with a computer, so you can understand the contrast. Computers Everyone generally uses PS, a computer software.