Supported Features
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VoiceOver
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Voice Control
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Larger Text
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Dark Interface
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Differentiate Without Color Alone
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Sufficient Contrast
Sleep Sine: Sleep Sounds
Drift to sleep. Yours to tune.
Free · In‑App Purchases · Designed for iPad. Not verified for macOS.
Six generative sleep scenes — audio that never plays the same way twice, visuals that never loop. iPhone, iPad, Apple TV. One purchase, no subscription.
Drift to sleep with six generative ambient scenes.
Audio crossfades from random offsets so no two nights sound the same — the way real rain sounds different every time you hear it. Visuals render live in Metal, not from a video loop.
iPhone, iPad, and Apple TV. One purchase. No subscription.
No ads. No account. No cross-app tracking.
THE SCENES
• Thunderstorm — distant rumbles, sheet rain on a tin roof. Free, forever.
• Frequencies — a sound bath for sleep. Warm, resonant tones from the sound-therapy tradition.
• Fireplace — crackling embers and the slow breath of a fire on a winter night.
• Ocean Night — long swells under a moonlit sky.
• Aurora Night — wandering aurora over a quiet pine canopy, rain through the leaves.
• Deep Space — pure pink, green, or brown noise synthesis, slow harmonics, the hum at the edge of hearing.
AUDIO THAT NEVER REPEATS
Each scene's audio is built from layered samples that crossfade at random offsets — three independent layers in indefinite, never-repeating combinations. The Deep Space scene goes further: pure noise synthesis, no samples at all.
VISUALS THAT NEVER LOOP
Every frame is generated live in Metal from noise functions and procedural math — not played back from a video file. Rain, embers, water crests, star twinkle, aurora brightness — all driven in real time. You can leave a scene playing all night and never catch a repeat.
TUNE EVERY SCENE
Each scene exposes 8–12 sliders. Save custom mixes. Share them with anyone via a short code that recreates the exact scene on their device.
PLAYS ALL NIGHT
Background audio on iPhone runs locked-screen-off without draining your battery. A sleep timer with a soft fade lets you set it and drift. iCloud privately syncs your presets across devices.
DESIGNED FOR APPLE TV
Hero scenes render full-bleed on the largest screen in your house.
One Family Sharing purchase covers everyone.
PRIVACY
Sleep Sine has no servers we operate and no accounts — your presets sync privately through your own iCloud. The only data collected is anonymous usage and crash diagnostics, through Google Firebase, to improve the app — no ads, no advertising ID, no cross-app tracking, no personal data. It's off by default in the EU, UK, and Switzerland, and you can turn it off anytime in About & Privacy.
ONE-TIME PURCHASE
That's it. Family Sharing enabled.
Ratings & Reviews
Sleep Sine now runs on iOS 18 and later, so it works on many more devices.
Plus general maintenance and updated components.
The developer, Embay, LLC, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Purchases
- Usage Data
- Diagnostics
The developer indicated that this app supports the following accessibility features. Learn More
Information
- Seller
- Embay, LLC
- Size
- 382.2 MB
- Category
- Health & Fitness
- Compatibility
Requires iOS 18.0 or later.
- iPhone
Requires iOS 18.0 or later. - iPad
Requires iPadOS 18.0 or later. - Mac
Requires macOS 15.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 2.0 or later. - Apple TV
Requires tvOS 17.0 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- Unlock All Scenes $5.99
- Copyright
- © 2026 Embay, LLC
