Colorfi: Adult Coloring Book

Colorfi is super easy to use with a simple design. It comes with hundreds of high definition pictures and more than 40 free pictures.  

Pick a picture and start coloring it in the most relaxing way. You can fill with a tap, or paint with brushes. There are many themes of color palettes to choose and you can even build your own.

Basic category is free and gets you warm up easily. Besides that, Colorfi also has many interesting catalogs like Animals, Food, Mandalas, Messages, Nature, People, Places, and Zodiac. 

Features:
- flood fill mode to tap and fill
- brush mode to draw freehand
- large range of brush widths
- build your own palettes
- Easily share your drawings on your favorite social network

Subscription:
- Unlimited access to full picture catalog and removal of ads.
- The subscriptions prices are $1.99 USD weekly, $4.99 USD monthly and $29.99 USD annually or equal to the same price tier that "Apple's App Store Matrix" determines in other currencies. 
- Payment will be charged to iTunes Account at confirmation of purchase
- Subscription automatically renews unless auto-renew is turned off at least 24-hours before the end of the current period
- Account will be charged for renewal within 24-hours prior to the end of the current period, and identify the cost of the renewal
- Subscriptions may be managed by the user and auto-renewal may be turned off by going to the user's Account Settings after purchase
- Any unused portion of a free trial period, if offered, will be forfeited when the user purchases a subscription to that publication, where applicable
– Terms of use: http://www.yanflex.com/colorfi/tos.html