# Protocol Zero: Sleep Sounds

> Sleep sounds + CBT-I routine

Canonical page: [https://chrome-stats.com/d/id6755014746](https://chrome-stats.com/d/id6755014746)

## Overview

- **ID:** `id6755014746`
- **Platform:** Apple
- **Type:** Apple app
- **Status:** Available
- **Publisher:** HumanOS LLC
- **Category:** Health & Fitness
- **Rating:** 4.70 / 5 (198 ratings)
- **Version:** 1.2.2
- **Last updated:** 2026-04-06
- **First published:** 2025-12-05
- **Size:** 123 MB
- **Data as of:** 2026-09-07
- **Store listing:** [Apple App Store](https://apps.apple.com/us/app/protocol-zero-sleep-sounds/id6755014746)
- **Website:** [https://protocolzero.app](https://protocolzero.app/)
- **Privacy policy:** [https://protocolzero.app/privacy](https://protocolzero.app/privacy)

## Description

Protocol Zero is the first Active Sleep Improvement app based on research. It provides a clear, personalized daily plan so you know exactly what to do to sleep better starting tonight.

New: Sleep sounds you can play at night (white noise, brown noise, rain, and calming audio) integrated with your personalized CBT-I routine. It acts as your personal sleep coach, guiding wake times, morning light exposure, caffeine cutoffs, and wind-down mode to relax before bed. The app uses science-backed CBT-I techniques to help you fall asleep faster and wake refreshed. Note: it’s an educational tool (not a medical device); in-app subscription is required to use Protocol Zero.

## Rankings

- #104,142 — Overall

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Source: [Chrome-Stats](https://chrome-stats.com/d/id6755014746)