You can discover tattoo artists from all horizons thanks to their work, art-books, sketchbooks and tattoo-books.
You can also buy reference books on skulls, dragons and others.
The magazine segment of the app is free, aswell as Dimitri Hk's Sketchbook volume 1.
Convenient features have been added, such as a light table, the ability to reverse a picture and a zoom. Very useful for reference books.