A free app for Android, by fum4dev.

Face2D is an easy to use application that detects human faces from a photo and converts it to an anime style. You can select from a list of human faces or you can select a face from the photo you want to convert. You can also select whether you want to see the gender of the person. The conversion process is done automatically. There are some points that you can change, such as the skin color, the skin tone, the size of the eyes, the size of the nose, the size of the mouth, the color of the eyes, etc. You can also change the background and the font style. You can adjust these points by using a slider. You can also save the converted image and share it with your friends.