# ONDA > ONDA composes ambient music live on your device for focus, rest, sleep and more. It never loops, needs nothing to stream and works offline. Made by Infinity Consciousness Europe SIA (Latvia). Free during the preview: 10 minutes without sign-up, then a free account. Key facts: - Web app at https://www.onda-flow.app; installable, works offline after the first visit. - Music is generative: composed live on the device with the Web Audio API from authored sound worlds, not streamed and not AI-generated from recordings. - Seven spaces (Focus, Unwind, Sleep, Stillness, Energy, Balance, Recover), three soundscapes each. - Optional frequency programs (Journeys, Steady rhythms such as 7.83 Hz, Breathe) are played as subtle modulation in the music; they do not generate PEMF and no health effect is claimed. - No ads, no trackers; an account is optional. - ONDA is music for wellbeing, not a medical device. It does not treat any condition, and everyone experiences sound differently. ## Spaces - [Focus music](https://www.onda-flow.app/focus-music): Calm, wordless focus music composed live on your device. No loops, no ads, nothing to stream. Listen free in your browser, no sign-up needed. - [Sleep sounds](https://www.onda-flow.app/sleep-sounds): Dark, slow ambient sleep sounds composed live, with a timer that fades out on its own. No loops, no ads. Free in your browser, works offline. - [Relaxing music](https://www.onda-flow.app/relaxing-music): Slow, spacious ambient music composed live for the evening: after work, reading or cooking. Never loops. Listen free in your browser. - [Meditation music](https://www.onda-flow.app/meditation-music): Open, spacious meditation music with no voice and no guidance. Composed live, never loops, with an optional breathing swell. Free in your browser. - [Energy music](https://www.onda-flow.app/energy-music): Bright, rhythmic ambient music with a steady pulse for mornings, walks and workouts. Composed live, never loops. Listen free in your browser. - [Calm background music](https://www.onda-flow.app/calm-background-music): Warm, even, gentle background music with nothing sharp and no surprises. Composed live on your device, never loops. Free in your browser. - [Rest & recovery music](https://www.onda-flow.app/music-for-rest-and-recovery): Slow, low, warm ambient music for rest after training or a long week, with ocean and hearth sounds. Composed live, never loops. Free in your browser. ## Guides - [Study music](https://www.onda-flow.app/study-music): Wordless ambient study music composed live for revision, reading and exams. No lyrics, no ads, no loops. Free in your browser, works offline. - [White noise alternative](https://www.onda-flow.app/white-noise-alternative): Like white or brown noise but want something warmer? ONDA composes soft ambient music with optional rain and ocean beds. Never loops. Free in your browser. - [Generative music](https://www.onda-flow.app/generative-music): Generative music is composed by a system as it plays, so it never repeats. How it works, where it came from, and how ONDA composes it live in your browser. - [Schumann resonance](https://www.onda-flow.app/schumann-resonance): What the 7.83 Hz Schumann resonance is, what science does and does not say, and how ONDA offers it as a gentle rhythm inside ambient music. - [Binaural beats](https://www.onda-flow.app/binaural-beats): How binaural beats work, why they need headphones, what the evidence does and does not show, and how ONDA uses them gently inside music. ## Comparisons - [ONDA vs Endel](https://www.onda-flow.app/alternatives/endel): Looking for an Endel alternative? ONDA also composes soundscapes live, runs in the browser with no download, works offline and is free during its preview. - [ONDA vs Brain.fm](https://www.onda-flow.app/alternatives/brain-fm): Comparing Brain.fm and ONDA for focus music: how the music is made, claims, price and privacy. ONDA composes live, never loops, and is free during preview. - [ONDA vs Calm](https://www.onda-flow.app/alternatives/calm): Want sleep and relaxation music without guided meditations or a subscription? ONDA composes endless ambient soundscapes live, free during preview. - [ONDA vs Noisli](https://www.onda-flow.app/alternatives/noisli): Noisli mixes background sounds; ONDA composes ambient music live with optional rain, ocean and wind beds. Compare features, price and offline use. - [Comparisons](https://www.onda-flow.app/alternatives): How ONDA compares with Endel, Brain.fm, Calm and Noisli for focus, relaxation and sleep sound: how the music is made, claims, price and privacy. - [Guides](https://www.onda-flow.app/guides): Plain-language guides to focus and study music, sleep sounds, generative music, binaural beats and the Schumann resonance, from the makers of ONDA. ## App - [Open ONDA](https://www.onda-flow.app/) - [Science, privacy and limits](https://www.onda-flow.app/about) - [Imprint and privacy](https://www.onda-flow.app/legal)