We can't tell you exactly why, but the popularity of grown-up coloring has skyrocketed this year.
The Wall Street Journal reports that currently eight of Amazon's 20 top-selling books are adult coloring books.
We couldn't be more on board with this new trend, but TBH, we don't always feel like lugging around a 64-count Crayola box.
That's why the techies among us are geeking out over all the apps out there that allow you to color on your tablet anywhere - no art supplies necessary.
A couple weeks ago, the Pigment app was released, which claims to be the "only true coloring experience for iPhone and iPad" thanks to its use of the Apple Pencil, which simulates the experience of coloring with a crayon. It comes with 65 free designs, and allows you to change the color and opacity of your coloring instrument, as well as zoom in on parts of the design for more accuracy.
Colorfy came out this summer with a variety of floral, animal and mandala designs and is available for Android and iOS. You choose the colors you like, and then tap on the spaces you want to color for a flawless finished effect. You can then show and tell your artwork via social media.
Publisher Octopus also released a series of free coloring apps like World Mandalas, Flower Mandalas, 100 Dot-to-Dot (and not your kindergartener's dot-to-dot - these ones are composed of 1,000 dots each) and Querkles (color by number), which you can download via Papertrell.
Who needs Candy Crush Saga or Nibblers when you have all these fun AF coloring apps just waiting to be downloaded?