A coloring app for adults

Would you recommend this product?
No reviews yet
Loads of my friends have taken up colouring recently on the grounds that it's relaxing and therapeutic (in particular, they've been flocking to a series by Scottish illustrator Johanna Basford - - if you're interested). This app is the same concept, but on your phone. I'm not sure it'll offer quite the same feeling as physically using a crayon, but the reviews are positive! For those interested, I found an article on HuffPo about the benefits of colouring for adults:
When I read "for adults" I expected a totally different kind of images. :p
This is doing really well on the app store!