# White Noise: Deep Sleep Timer — Fan, Rain, Brown Sound Machine

> Ambient sound generator for sleep, focus, and relaxation with customizable mixes. (iPhone/iPad app by PROBABILITY LLC.)

- Source: https://appshunter.io/ios/app/white-noise-deep-sleep-timer/id6759076910 (this page in markdown: same URL + `.md`)
- Developer: [PROBABILITY LLC](https://appshunter.io/developer/1482354660)
- Category: Health & Fitness, Lifestyle
- Price: Free with in-app purchases
- Rating: 5.00/5 from 1 App Store ratings
- Age rating: 4+
- Requires: iOS 17.0 · 2 MB
- Languages: American English, Arabic, Dutch, French (France), German (Germany), Japanese, Korean, Brazilian Portuguese, Mexican Spanish, Turkish
- Released: 2026-03-20
- Data updated: 2026-07-23
- Monetization: freemium
- User reviews in markdown: https://appshunter.io/ios/app/white-noise-deep-sleep-timer/id6759076910/reviews.md

## What is White Noise?

Sleep sound app with 12 algorithmically-generated sounds. White noise, brown noise, pink noise, fan, rain, ocean, thunder, forest, campfire, stream, heartbeat, and shush. Mix 2 sounds simultaneously. Sleep timer with gradual fade-out. Dark mode interface designed for nightstands. Background audio plays all night. Perfect for insomnia, babies, meditation, focus, and relaxation.

SUBSCRIPTION INFO
• Deep Sleep Pro Monthly: $3.99/month
• Deep Sleep Pro Annual: $29.99/year
• Payment is charged to your Apple ID account at confirmation of purchase
• Subscription automatically renews unless cancelled at least 24 hours before the end of the current period
• You can manage and cancel subscriptions in your Account Settings on the App Store

Privacy Policy: https://probabilityapps.com/privacy.html
Terms of Use: https://probabilityapps.com/terms.html

## Key features

- 12 algorithmically generated sounds
- Mix two sounds simultaneously
- Sleep timer with gradual fade-out
- Dark mode interface
- Background audio playback
- Focus and relaxation aid

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| Monthly Access | $3.99 | per month |
| Annual Access | $29.99 | per year |



## Frequently asked questions about White Noise

### What sounds does Deep Sleep offer?

Deep Sleep offers 12 algorithmically generated sounds including white noise, brown noise, pink noise, fan, rain, ocean, thunder, forest, campfire, stream, heartbeat, and shush. These are designed to aid sleep, focus, and relaxation.

### Can I combine sounds in Deep Sleep?

Yes, Deep Sleep allows you to mix two sounds simultaneously to create a personalized soundscape. This feature enhances the customization for your sleep or focus needs.

### Does Deep Sleep have a sleep timer?

Yes, Deep Sleep includes a sleep timer with a gradual fade-out feature. This ensures the sounds gently decrease in volume, helping you drift off to sleep without abrupt interruptions.

### What are the subscription options for Deep Sleep Pro?

Deep Sleep Pro offers monthly access for $3.99 per month and annual access for $29.99 per year. Subscriptions automatically renew unless canceled at least 24 hours before the current period ends.

### How do I manage or cancel my Deep Sleep subscription?

You can manage and cancel your subscriptions directly within your Account Settings on the App Store. This provides a straightforward way to control your subscription status.

### Is Deep Sleep suitable for babies?

Yes, Deep Sleep is perfect for babies, offering soothing sounds like shush and heartbeat that can help calm infants and promote sleep. The gentle nature of the sounds is designed to be comforting.

### What devices does Deep Sleep support?

Deep Sleep currently supports iPhones. The app is designed to provide a seamless experience on Apple's mobile devices.

### How often is Deep Sleep updated?

Deep Sleep was last updated on March 25, 2026, with version 1.0.1. The release date was March 20, 2026, indicating recent development and potential for future updates.

## Version history (last 3 releases)

### 1.0.2 — 2026-07-10

New look, smarter sleep timer experience, and performance improvements.

### 1.0.1 — 2026-03-25

Improved keywords and added more localizations for better discoverability worldwide.

### 1.0 — 2026-03-20

No release notes.

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All apps by PROBABILITY LLC: https://appshunter.io/developer/1482354660

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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 2026-07-23.*