# Clozzz: Sleep Sounds & Music — Sleep, Music & White Noise

> Sleep, Music & White Noise (iPhone/iPad app by Biaohan Limited.)

- Source: https://appshunter.io/ios/app/clozzz-sleep-sounds-and-music/id6761159468 (this page in markdown: same URL + `.md`)
- Developer: [Biaohan Limited](https://appshunter.io/developer/1888068099)
- Category: Health & Fitness, Music
- Price: Free with in-app purchases
- Age rating: 17+
- Requires: iOS 13.0 · 39 MB
- Languages: American English
- Released: 2026-05-05
- Data updated: 2026-07-28
- User reviews in markdown: https://appshunter.io/ios/app/clozzz-sleep-sounds-and-music/id6761159468/reviews.md

## What is Clozzz?

Sleep like a baby again. Lab-tested, science-backed lullabies made just for you.

Clozzz is an intelligent sleep-aid app that brings together sleep music, modern lullabies, and white noise — personalized to you, and gently evolving as you drift off. Every track is lab-tested and supported by our team's peer-reviewed research, published in top-tier academic journals and conferences.

— Inspired by the Most Effective Lullaby Ever —

The way a mother gently rocks, hums, and quietly fades her voice until a child falls asleep is one of the most effective sleep rituals ever discovered. Two things make it work: it's deeply personal, and it slowly transforms — softer, slower, calmer.

Clozzz is built on that exact logic. Your audio is matched to you, then gradually evolves as you drift off — guiding you into sleep without ever jarring you awake.

— Tailor-Made for You —

No two sleepers are alike. Clozzz uses affective computing to recommend audio based on your personal sound and music preferences — and the specific factors keeping you up at night, from stress and anxiety to noise, lifestyle, and hormones. It's a world away from random tracks or generic white noise.

— Built on Real Science and Lab-Test —

Developed by a team of neuroscience and cognitive-computing scientists, Clozzz is grounded in research on sleep, sound, and the human nervous system — and refined through careful, real-world testing. Behind every track is a blend of music therapy, white noise engineering, and modern acoustic technology.

— Slow, Gentle, Personal —

A signature gradual fade: your soundscape doesn't just play — it slowly drifts with you, adjusting tempo, brightness, and intensity in subtle steps. You won't notice it happening. You'll just notice you're asleep.

— Simple to Use —

One tap starts it. Sleep timers, loops, and gentle fades handle the rest. No clutter. No decision fatigue. Just rest.

Whether you're winding down after a long day, fighting insomnia, calming anxiety, or simply hoping for a quieter, deeper night — Clozzz is the lullaby made for you.

Sleep like a baby again.

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| Monthly Plan | $3.99 | per month |
| Annual Subscription | $49.99 | per year |



## Version history (last 2 releases)

### 1.0.1 — 2026-05-12

- Stale CDN link rekey playback bug fix.
- More precise frontend playback error codes and logging.
-  Improved user-facing status and error modals.
- Feedback reward implemented in Android.
- Tablet UI improvements.
- New subscription confirmation/expiry modals.
- Improved locale strings.

### 1.0 — 2026-05-06

No release notes.

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-07-28.*