# Sleep Mask: Adaptive Noise — No Nonsense Noise

> No Nonsense Noise (iPhone/iPad app by Cool S Technologies.)

- Source: https://appshunter.io/ios/app/sleep-mask-adaptive-noise/id6790191176 (this page in markdown: same URL + `.md`)
- Developer: [Cool S Technologies](https://appshunter.io/developer/6790191178)
- Category: Health & Fitness, Lifestyle
- Price: $0.99
- Age rating: 4+
- Requires: iOS 13.0 · 19 MB
- Languages: American English
- Released: 2026-08-05
- Data updated: 2026-08-17
- User reviews in markdown: https://appshunter.io/ios/app/sleep-mask-adaptive-noise/id6790191176/reviews.md

## What is Sleep Mask?

A private noise machine that adapts to your room. Mask snoring, traffic, and voices with synthesized sound that stays entirely on your device.

Most sleep sound apps play a recording. Sleep Mask creates noise in real time and can adapt it to the sounds around you.

Turn on Adaptive Masking and Sleep Mask samples the room continuously. It analyzes that moment entirely on your iPhone, then adjusts its synthesized sound to better cover distractions such as snoring, traffic, a television, or voices through the wall.

SHAPE A SOUND YOU CAN SLEEP WITH

Choose White, Pink, Warm Pink, Brown, Deep Brown, or Fan noise. Then tune the tone from open and airy to soft, warm, or dark.

TWO ADAPTIVE MODES

• Level mode responds to the sound present in each frequency range.
• Flux mode focuses on changing sounds while paying less attention to steady background hum.

SEE THE ADAPTATION

The live spectrum shows the room analysis, generated noise, and adaptive correction so you can see how the sound is being shaped.

STAYS OUT OF YOUR WAY

Set a sleep timer, choose how quickly adaptation responds, and limit the maximum boost. Audio continues when the screen locks so you can settle in without keeping the app open.

PRIVATE BY DESIGN

Microphone samples are processed only on your device. They are never recorded, stored, or transmitted. Sleep Mask has no account, ads, analytics, tracking, or data collection.

NO SUBSCRIPTION

Every feature is included. There is no recurring fee and nothing to manage in the morning.

## Chart rankings

- #198 in Top Paid · Health & Fitness (US App Store)


## Version history (last 1 release)

### 1.0.0 — 2026-08-06

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 2026-08-17.*