Susurella: Sleep Sound Mixer

Rain, white noise, offline

Only for iPhone

Free · In‑App Purchases · Designed for iPhone. Not verified for macOS.

iPhone

One purchase removes every ad, for good, and there is no subscription. Every sound stays unlocked either way, and a sleep session is zero ads whether you buy or not. Pick the sounds you want, layer them, and fall asleep to a mix that is yours. Susurella is an offline sound mixer for sleep. Tap a sound and it starts. Tap another and the two play together. Every layer keeps its own volume slider, so you can put rain up front and hold the ocean underneath it. WHAT IS INSIDE - 26 CC0 nature loops: ocean, beach, stream, mountain stream, waterfall, rain, summer rain, rain on a roof, forest, forest stream, forest wind, morning birds, wind in trees, campfire, fireplace, fountain, night crickets, singing bowl, storm, frogs, purring, cave, boat cabin, fan, air conditioner and ventilation. - 4 noise colours generated on the device: white noise, pink noise, green noise and brown noise. - 6 complete classical piano performances, played through rather than looped. - Nothing is locked. There is no sound pack to buy. YOUR OWN AUDIO Add files from your device. mp3, ogg, wav and flac play directly; aac and m4a are converted on the device. They become mixer layers like any other sound, and they never leave your phone. SLEEP TIMER Choose a length from 5 to 120 minutes and the mix fades out and stops. Or switch to the adaptive timer: the phone watches for the moment you stop moving and fades early, treating your chosen length as a ceiling instead of a fixed end. Nothing about that is recorded or analysed. NIGHT MODE Once a session starts the screen goes dark and shows the countdown and a stop button. That is all it shows. OFFLINE, NO ACCOUNT Every sound ships inside the app. No sign-up, no cloud, no sync, and no data spent while you sleep. Airplane mode works. HOW ADS WORK HERE We would rather tell you exactly than claim "no ads" and be wrong. - No subscription. Not now, not later. - A banner sits at the bottom of the setup screens. - During a sleep session there are zero ads. The banner comes down and nothing full-screen can appear. - No ad ever interrupts what you are playing. - There is a launch ad when you reopen the app. - One purchase removes every ad, permanently. Restore is always available. Available in English, Korean, Japanese, German, French, Spanish, Italian, Portuguese and Chinese (Simplified and Traditional). Sounds are CC0 (public domain), sourced from BigSoundBank. The licence notice is in Settings.

Ratings & Reviews

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The first release of Susurella. - An offline mixer for the sounds you like, with a volume dial on every layer. - 26 CC0 nature loops, 4 noise colours generated on the device, 6 classical piano pieces. - Add your own audio - mp3, ogg, wav and flac play directly, aac and m4a convert on the device. - A sleep timer from 5 to 120 minutes, or an adaptive one that fades early once you stop moving. - Zero ads during a sleep session.

Version 1.1.1

The developer, PantaLabs, 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 Used to Track You

    The following data may be used to track you across apps and websites owned by other companies:

    • Identifiers

  • Data Not Linked to You

    The following data may be collected but it is not linked to your identity:

    • Purchases
    • Identifiers
    • Usage Data
    • Diagnostics

Privacy practices may vary, for example, based on the features you use or your age. Learn More

Accessibility

The developer has not yet indicated which accessibility features this app supports. Learn More

Information

Seller
  • PantaLabs
Size
  • 76.2 MB
Category
  • Health & Fitness
Compatibility
Requires iOS 15.0 or later.
  • iPhone
    Requires iOS 15.0 or later.
  • iPod touch
    Requires iOS 15.0 or later.
  • Mac
    Requires macOS 12.0 or later and a Mac with Apple M1 chip or later.
  • Apple Vision
    Requires visionOS 1.0 or later.
Languages
English and 9 more
  • English, French, German, Italian, Japanese, Korean, Portuguese, Simplified Chinese, Spanish, Traditional Chinese
Age Rating
4+
In-App Purchases
Yes
Copyright
  • © 2026 PantaLabs
  • Developer Website
  • Privacy Policy

    • More by PantaLabs

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