Coloring Book is a mobile app loved by millions — with over 10 million installs across the past decade. Built by a tiny but passionate studio, the app features hundreds of high-quality coloring pages for kids and adults alike. In 2025, we introduced Coloring.Expert, a new companion site that blends traditional creativity with cutting-edge AI to generate beautiful, unique coloring pages. Whether you're coloring to relax or explore new art, there's something for everyone.