Endel

Endel is a mobile app for individuals who want AI-generated soundscapes for focus, relaxation, sleep, and movement, personalized in real time.

Key capabilities include:

• Real-time adaptive soundscapes that react to local inputs such as time of day, weather, heart rate (with Apple Watch), and movement/cadence, generating audio endlessly on-device.
• Modes and sessions for different goals, including Focus, Relax, Sleep, and Move, plus Scenarios that run timed sessions with predefined phases (start, middle, end).
• Premium content and playback options, including offline listening, Colored Noise (9 colors), Spatial Orbit, Outside, Recovery, a Focus Timer, and artist collaborations.
• Generative visuals paired with each soundscape to match the listening state.

Pricing: Freemium. The free version limits sessions to 10 minutes; Premium is available via subscription (about $9.99–$19.99/month or $34.99–$119.99/year, varies by platform and promotion) and a lifetime purchase (around $124.99).

Notable for its distinction between endlessly generated Soundscapes and timed Scenarios, plus audio tuned to 440 hertz to help reduce cognitive load, with neuroscience-backed research referenced on its site.