The ultimate adult colouring app

The idea behind colouring books for adults is that they relieve the stress and anger of our daily lives. It’s only natural that this has become a massive phenomenon globally in the last couple of years. In 2015, we worked with The Octopus Publishing Group, re-purposing their bestselling coloring titles into a coloring app.

The Calmeleon app is one of the best coloring apps on the iTunes store. With over 300k+ downloads, it contains over 1000 original artworks, giving users a wide array of options to relax and color on the go.


  • Octopus Publishing Group


  • Product Design
  • Mobile Development
  • UI/UX