---
name: "Endel"
subtitle: "Ambient sound generated from your body's own data"
date: 2026-07-23
link: "https://endel.io"
linkText: "endel.io"
source: "Cool Tools"
topics: [music-and-sound, ios-apps]
tags: [ambient, focus, sleep]
description: "Personalized soundscapes generated from your Apple Watch data, in real time."
---

Endel generates ambient soundscapes on the fly, tuned to inputs most apps ignore: your Apple Watch's heart rate and motion, the local weather, and the time of day relative to your circadian rhythm. Pick a mode — focus, relax, or sleep — and it composes a continuous, never-repeating stream meant to nudge your state rather than just mask noise around you.