At last count, in 2017, there were 1,300 meditation apps ready for download, according to the Financial Times. Scrolling through the surfeit of choice, one pattern quickly emerges: Meditation companies love circles. Curling waves, colorless rings, dots, rounded letters, the halo of the moon. But beyond that, the apps present a wide variety of experiences, suggesting something for everyone. Stress, anxiety, insomnia, trauma—there's an app for that.