Sound apps are popular with a bunch of variety and use cases. Here are the best nature, sleep, and animal sound apps for Android!

It's no secret that rain sounds offer troubled sleepers comfort. "Rain is predictable, calming, stable, and non-threatening," says Dr. Shelby Harris, a behavioral sleep-medicine specialist.

It’s no secret that rain sounds offer troubled sleepers comfort. “Rain is predictable, calming, stable, and non-threatening,” says Dr. Shelby Harris, a behavioural sleep-medicine specialist. According ...