Painting By Numbers is a free-to-try coloring app available on iPhone that offers a vast collection of over 1000 images for users to color. The app provides a variety of image styles including pixel art, photos, paintings, animals, landmarks, flowers, and portraits, catering to both adults looking to relax and kids seeking entertainment.

Users can enjoy features such as pinch-zoom and slider-zoom for easy handling, a continuous draw option for painting larger areas swiftly, intuitive swipe gestures for image and color palette selection, preview buttons, and the ability to clear mis-clicks. The app also offers a 5-dimensional image selection based on size, type, style, topic, and progress, along with the option to choose reduced-color versions for varying levels of challenge. Additionally, Painting By Numbers supports multiple languages, allowing users to customize the interface in English, German, Spanish, French, Italian, Russian, or Portuguese.