From intricate mandalas to whimsical animals and even a bit of cheeky humor, this roundup features the best adult coloring books that will spark your imagination and soothe your soul. The best ...

It contains 50 designs featuring animals in a mandala style (an intricate geometric design in Buddhist and Hindu traditions).

10. Coloring Fun: Color By Number This adult coloring app is free for iOS and Android and is full of free images in categories like Fantasy, Mandalas, Cartoon, Animals, and more.

If you’ve grown tired of coloring mandalas or scenes from nature, these R-rated adult coloring books might be more your speed.

Believe in Yourself: Inspirational Coloring Books For Adults Get a little dose of inspiration with this Believe in Yourself: Inspirational Coloring Books For Adults ($7).

If you’ve grown tired of coloring mandalas or scenes from nature, these R-rated adult coloring books might be more your speed.