I’ve been using the app for about an hour. The rain noise simulations are pretty relaxing. (They also have colored noise in the free version. Some colors are named but others are just their equivalents in hertz. For example green noise is 500hz) This is a better alternative than the ones that make you pay. The free version here gives you a bunch for free. The trial lets you test out premium sounds. I’m gonna test out how well it might help me sleep, tonight.