Coloring apps are digital applications that allow users to fill in designs and images with colors using their devices. These apps often feature a variety of templates, including mandalas, animals, and landscapes, providing a creative outlet for both children and adults. Users can select colors from a palette and apply them to different sections of the image, making it easy to experiment with different color combinations. Many coloring apps also include features like zooming in for detailed work, undoing mistakes, and sharing completed artwork on social media. Some popular coloring apps include Colorfy, Recolor, and Pigment, which offer both free and premium content for users to enjoy.