# Sleep Machine vs Noise Machine

The clearest difference is price: Noise Machine at Free against Sleep Machine's $3.99. Noise Machine also leads on update cadence (every 3 weeks vs every 2 months). Sleep Machine's advantage is in-app purchases (none vs 15) and ads (none vs shown). On rating, ratings volume and device support there is nothing between them.

Noise Machine is free to download; Sleep Machine costs $3.99 up front. Noise Machine sells 15 in-app purchases, starting at $0.99 per 7 days. Sleep Machine asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 4.7 for Sleep Machine against 4.6 for Noise Machine. Both are backed by a comparable volume of ratings — 3K and 4.3K respectively. Written reviews are what separate them: 85% of Sleep Machine's written reviews are positive against 66% of Noise Machine's.

Sleep Machine ships an update every 2 months, Noise Machine every 3 weeks. The most recent releases landed on October 29, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Sleep Machine | Noise Machine |
| --- | --- | --- |
| Price | $3.99 | **Free** |
| Rating | **[4.7 (3K ratings)](https://appshunter.io/ios/app/sleep-machine/id323061162/reviews)** | [4.6 (4.3K ratings)](https://appshunter.io/ios/app/noise-machine-brown-white/id1261956119/reviews) |
| Number of ratings | 3K | **4.3K** |
| Positive reviews | **84.5% of reviews** | 65.6% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 2 months | **Every 3 weeks** |
| Monetization | **Free** | Free with in-app purchases |
| Best chart rank | **#18** | — |
| Size | 108 MB | 119 MB |
| Requires iOS | **8.0** | 16.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [SleepSoft LLC](https://appshunter.io/developer/319106694) | [ZipoApps](https://appshunter.io/developer/1671444635) |

## What reviewers say

### Sleep Machine

[App page](https://appshunter.io/ios/app/sleep-machine/id323061162)

**Currently charting:** #18 Top Paid · Health & Fitness (US App Store)

Create a personalized relaxation environment with a vast library of professionally mastered ambient sounds, music, and tones. Mix and customize sounds to reduce stress, block distractions, and promote restful sleep. Features include background playback, advanced alarms, and iTunes integration.

**Highlights:** 103 professionally mastered ambient sounds, 14 brainwave/binaural beats sounds, Customizable sound mixing, Background audio playback, Advanced alarm features, iTunes music integration, Silence timer

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 🚀 Can't sleep without it
- 👍 Great selection of sounds
- 👍 Customizable sound mixes
- 👍 Helps with sleep and relaxation
- 👍 Reliable and consistent

**What reviewers complain about**

- 🐛 Alarm functionality issues
- 🐛 Saving custom mixes not possible
- 🐛 Compatibility issues with iOS updates
- 🐛 Drains battery when left running
- 🐛 Doesn't work with AirPlay

**Reported bugs**

- Alarm not working properly
- Sounds stop playing randomly
- App crashes after recent iOS updates
- Can't go back to main screen from settings

**Requested features**

- Add timer to turn off the app
- Ability to save custom sound mixes
- Integrate with smart speakers like HomePod
- Add more sound options and presets
- Improve alarm functionality


### Noise Machine

[App page](https://appshunter.io/ios/app/noise-machine-brown-white/id1261956119)

Drift off to sleep, enhance focus, or simply relax with a variety of scientifically accurate noise types. This app offers brown, green, pink, and white noise, along with a sleep timer and the ability to mix sounds. Control playback with Siri and enjoy a beautiful, dark mode interface.

**Highlights:** High-quality noise generation, Integrated sleep timer, Mix noise with other app audio, Siri integration for playback control, Relaxing dark mode, Play on various audio devices

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (15)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlimited Access | $0.99 | per 7 days |
| Unlimited Access | $8.99 | per 7 days |
| Unlimited Noise Subscription | $9.99 | per year |
| Unlimited Noise | $12.99 | per year |
| Unlimited Noise | $14.99 | per year |
| Unlimited Noise | $19.99 | per year |
| Full Access | $19.99 | per month |
| Unlimited Noise Subscription | $19.99 | per year |
| Unlimited Noise | $29.99 | per year |
| Noise Machine Lifetime Unlock | $0.99 | one-time |
| Noise Machine Lifetime Unlock | $2.99 | one-time |
| Noise Machine Lifetime Unlock | $4.99 | one-time |
| Noise Machine Lifetime Unlock | $6.99 | one-time |
| Noise Machine Lifetime Unlock | $9.99 | one-time |
| Noise Machine Lifetime Unlock | $39.99 | one-time |

**What reviewers like**

- 🚀 Great for sleep
- 🚀 Helps block out noise
- 👍 Simple and easy to use
- 👍 Variety of sound options
- 👍 Useful for travel and home

**What reviewers complain about**

- 🐛 Constant pop-up for rating
- 🐛 Requires internet connection
- 🔋 High battery consumption
- 💰 Subscription model is expensive

**Reported bugs**

- App crashes or stops playing randomly
- Skipping or looping issues with sound

**Requested features**

- More sound options (purple, blue noise)
- Ability to mix/layer sounds
- Longer timer options (e.g. 30 mins)
- Ability to cast to other devices


## Frequently asked questions

### Is Sleep Machine free?

Sleep Machine costs $3.99, with no in-app purchases.

### Is Noise Machine free?

Noise Machine is free to download, with in-app purchases available.

### Which has better reviews, Sleep Machine or Noise Machine?

Sleep Machine is rated higher. Sleep Machine averages 4.7 out of 5 from 3K ratings, while Noise Machine averages 4.6 from 4.3K ratings.

### Do Sleep Machine or Noise Machine have ads?

Noise Machine shows ads; Sleep Machine does not.

### Which is updated more often, Sleep Machine or Noise Machine?

Sleep Machine ships an update every 2 months, and Noise Machine every 3 weeks. Most recently, Sleep Machine was updated on October 29, 2026 and Noise Machine on October 24, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*