A free program for Android, by Optoreal.

Photo to sketch is a free app that helps you to convert your photos to artistic sketches. You can make different styles like pencil sketches, colored pencil sketches, watercolors, oil paintings, cartoon styles, etc. You can change colors and use different artistic effects. It is an easy-to-use application that lets you make beautiful artwork in a few seconds. You can share your artwork on social media and use it as a profile picture.

This application has been designed to be the best photo converter application for your Android device. It is very easy to use, just choose a style from the list and make your photos like an artistic painting.