https://apps.apple.com/us/app/feelquency-calm-meditation/id6749157669

I love the idea of white noise or frequencies for relaxation. Personally many times been going to sleep with rain sounds.

This is a bit of an augmented concept. Adding vibration patters that "match" the audio frequencies –as much as possible– makes it a very different but pleasant exeperience.

I'd love to see what you think about it.