A Calm alternative when you only want the music
Calm is a meditation and sleep app with guided meditations, Sleep Stories narrated by voices, music and soundscapes, mostly behind a subscription. ONDA does one thing: endless ambient music composed live on your device for sleep, unwinding, meditation and focus, with no voices. It runs in the browser and is free during its preview.
Different products for different needs
Calm is a broad wellbeing library: courses, guided sessions, stories and music. ONDA is a single instrument. If what you mostly use is the music and soundscapes, ONDA gives you that without a library to scroll through, and every session is newly composed.
What ONDA offers for sleep and relaxation
- Sleep: dark, slow soundscapes that thin out over the first half hour.
- Unwind and Stillness: spacious music for evenings, breathwork and meditation.
- A timer that fades out, playback with the screen locked, works offline.
- No voice, no notifications, no streaks.
Where Calm may suit you better
If you want guided meditations, courses or narrated sleep stories, Calm offers those and ONDA does not.
ONDA and Calm side by side
| ONDA | Calm | |
|---|---|---|
| Main content | Endless live-composed ambient music | Guided meditations, Sleep Stories, music |
| Voices | None | Yes, guided and narrated |
| Loops | Never | Recorded tracks |
| Install | None needed, runs in the browser (installable) | App |
| Price | Free during preview (10 min without sign-up) | Free content plus subscription, see Calm |
Questions
Does ONDA have guided meditations?
No. ONDA is music only, with no voice or instruction.
Is ONDA free?
Yes, during the preview. You can listen for 10 minutes straight away with no sign-up, then create a free account with just an email address to keep listening.
Does ONDA work offline?
Yes. ONDA composes the music on your device instead of streaming it, so after the first visit it keeps working without a connection. You can add it to your home screen and it plays with the screen locked.
Note on sources
Details about other services are summarised from their own public descriptions as of October 2026 and may change; check each service for current features and pricing. ONDA is not affiliated with any of them.
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