# Sleep Mask: Adaptive Noise

> No data collection, no ads, no subscription.

Canonical page: [https://chrome-stats.com/d/com.cools.sleepmask](https://chrome-stats.com/d/com.cools.sleepmask)

## Overview

- **ID:** `com.cools.sleepmask`
- **Platform:** Android
- **Type:** Android app
- **Status:** Available
- **Publisher:** COOL-S
- **Category:** TOOLS
- **Downloads:** 3
- **Version:** 1.0.0
- **Last updated:** 2026-07-27
- **First published:** 2026-06-01
- **Publisher country:** US
- **Size:** 19 MB
- **Data as of:** 2026-09-06
- **Store listing:** [Google Play Store](https://play.google.com/store/apps/details?id=com.cools.sleepmask)
- **Website:** [https://cool-s.com](https://cool-s.com/)
- **Privacy policy:** [https://cool-s.com/privacy/sleep-mask](https://cool-s.com/privacy/sleep-mask)

## Description

A private noise machine that adapts to your room. Mask snoring, traffic, and voices with synthesized sound that stays entirely on your device.<br><br>Most sleep sound apps play a recording. Sleep Mask creates noise in real time and can adapt it to the sounds around you.<br><br>Turn on Adaptive Masking and Sleep Mask listens continuously while it plays. It analyzes a rolling window of room sound four times a second entirely on your device, then smoothly reshapes its synthesized sound to better cover distractions such as snoring, traffic, a television, or voices through the wall.<br><br>SHAPE A SOUND YOU CAN SLEEP WITH<br><br>Choose White, Pink, Warm Pink, Brown, Deep Brown, or Fan noise. Then tune the tone from open and airy to soft, warm, or dark.<br><br>TWO ADAPTIVE MODES<br><br>• Changes focuses on shifting sounds while paying less attention to steady background hum.<br>• All sound responds to the sound present across the room.<br><br>SEE THE ADAPTATION<br><br>The live Sound Shape overlays room sound, generated noise, and adaptive change across 96 bars so you can see how the sound is being shaped.<br><br>STAYS OUT OF YOUR WAY<br><br>Set a sleep timer, choose a Gentle, Balanced, or Fast response, and limit the maximum lift. The stop time stays visible at a glance, and audio continues when the screen locks.<br><br>PRIVATE BY DESIGN<br><br>Microphone audio is processed only on your device. It is never recorded, stored, or transmitted. Sleep Mask has no account, ads, analytics, tracking, or data collection.<br><br>NO SUBSCRIPTION<br><br>Every feature is included. There is no recurring fee and nothing to manage in the morning.

## Rankings

- #3,005,236 — Overall

## Permissions and access

### Permissions

- `android.permission.FOREGROUND_SERVICE`
- `android.permission.FOREGROUND_SERVICE_MEDIA_PLAYBACK`
- `android.permission.FOREGROUND_SERVICE_MICROPHONE`
- `android.permission.POST_NOTIFICATIONS`
- `android.permission.RECORD_AUDIO`
- `android.permission.WAKE_LOCK`
- `com.android.vending.CHECK_LICENSE`
- `com.cools.sleepmask.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION`

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Source: [Chrome-Stats](https://chrome-stats.com/d/com.cools.sleepmask)