Coloring Book for Fun is a free coloring app available on iPhone developed by Coloring Puzzle Games Sp. z o.o. With this app, you can enjoy coloring unique pages with animals, mandalas, florals, people, and many more. The app regularly adds new pages to keep you entertained. Coloring Book for Fun is a great way to reduce stress and anxiety by engaging in a relaxing activity.

One unique feature of the app is the subscription option. For $7.99 weekly, $14.99 monthly, or $39.99 annually, you can access unlimited coloring pages for the duration of your subscription. The app allows users to manage their subscriptions and turn off the auto-renewal feature. However, it's important to note that any unused portion of a free trial period will be forfeited when the user purchases a subscription to that content. Overall, Coloring Book for Fun is an excellent app for anyone who enjoys coloring and wants a convenient way to engage in this relaxing activity.