Diamond Pixel Coloring Book is a free lifestyle application for both children and adults. It offers a relaxing and fun way to reduce stress through coloring by number. With over 100 animated diamond artworks to choose from, users can easily select a picture and start coloring. The app provides a simple tap-to-color feature, allowing users to choose a suitable color and tap on the corresponding area to fill it. If a mistake is made, the undo feature is available. Other features include zooming in on the pictures, saving them to the gallery, and sharing them on social media platforms like Facebook and Instagram. The app also includes a counter that shows the duration of the coloring process and the option to set the drawing as wallpaper. Diamond Pixel Coloring Book is easy to use for both adults and children, making it a great choice for anyone looking to relax and have fun with coloring.