The sound library
Every recording in Sonora is made in a real place with a Soundfield ambisonic microphone, then mastered to stay believable for hours — no synthesis, no short loops.
Recordings are long-form by design: a loop you can spot is a loop that wakes you. Mix any of these together in the app, set their levels independently, and save the result.
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Water
Gentle rain
Steady broadband patter that covers mid-frequency interruptions — voices, doors, television through a wall.
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Water
Thunderstorm
Rolling thunder at a distance over steady rain; the low-frequency energy softens sudden outside noise.
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Fire
Campfire
Close-recorded crackle with a slow, irregular rhythm — long-form recording, no loop point to notice.
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Nature
Crickets
A field at dusk; narrow-band chirps sitting above speech frequencies, with space around them.
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Air
Wind through trees
Broad leaf noise rising and falling in long, slow waves — rich in variation, as one reviewer put it.
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Water
Sleet
Fine icy grain on foliage — denser than rain, lighter than hail. A quiet favourite among Japanese users.
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Nature
Cat purring
A steady purr with its fundamental far below speech — felt as much as heard.
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Ambience
Supermarket
Distant announcements, trolleys, refrigeration hum — the everyday murmur some people find easiest to fall asleep to.
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Engineered noise
Coloured noise profiles
White, pink, and darker profiles with adjustable frequency balance — engineered rather than recorded, for masking that fits your room.
Hear them properly
The library lives in the app, in full quality and fully offline.