Coloring Book for Adults is a free app developed by Edvard Arutyunyan that offers a wide range of coloring pages for all ages. The app doesn't require any subscriptions, in-app purchases, or hidden costs. With over 50 popular themes including mandalas, messages, doodles, fashion, animals, and more, there are plenty of options to choose from.

Users have praised the app for its variety and accessibility, with one reviewer calling it the "best coloring game ever." The app's slim and user-friendly interface design makes it easy to use, and the one-touch coloring mode and big zoom allow for even the smallest details to be colored. The app also supports landscape mode for a better coloring experience.

Coloring Book for Adults also has an easy undo mode to retry different ideas, and users can save, share, and print their works on any connected device. The app is a universal app that works on iPhone, iPod Touch, and iPad.

Overall, Coloring Book for Adults is a great app for anyone looking for stress relief and a way to develop their creativity. Download it for free now and enjoy it forever!