Adult Coloring Books: Yes, There Are Apps for That

We might have known it wouldn't be long before that low-tech trend of coloring books for adults got a modern makeover. New apps claim to offer the same soothing effects of a physical coloring book in the convenience of an app.

A growing trend among adults, coloring books are said to help their users de-stress and unwind and have been taking off over the past few years, first in France, then in Europe, and now overseas. Johanna Basford's "Secret Garden" is among noteworthy successes, and more recently Marvel and "Game of Thrones" have both revealed plans to release themed coloring books.