# Ambi vs Sleep Noise Machine

The clearest difference is ads: Sleep Noise Machine at none against Ambi's shown. Sleep Noise Machine also leads on update cadence (every 4 days vs every 4 months) and rating (4.6 vs 4.3). Ambi's advantage is review sentiment (58% vs 33%). On price, ratings volume, in-app purchases and monetization model there is nothing between them.

Both are free to download. Ambi sells 1 one-off in-app purchase and Sleep Noise Machine sells 4 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

Sleep Noise Machine holds the better App Store score, 4.6 against 4.3. Both are backed by a comparable volume of ratings — 87 and 152 respectively. Written reviews complicate that: 58% of Ambi's written reviews are positive against 33% of Sleep Noise Machine's, so the app with the better star average is not the one people write more warmly about.

Ambi ships an update every 4 months, Sleep Noise Machine every 4 days. The most recent releases landed on November 1, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Ambi | Sleep Noise Machine |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.3 (87 ratings)](https://appshunter.io/ios/app/ambi/id777337726/reviews) | **[4.6 (152 ratings)](https://appshunter.io/ios/app/sleep-noise-machine/id6743419325/reviews)** |
| Number of ratings | 87 | **152** |
| Positive reviews | **58.1% of reviews** | 33.3% of reviews |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 4 months | **Every 4 days** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 9 MB | 41 MB |
| Requires iOS | 17.0 | **12.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Mellowmuse Ltd](https://appshunter.io/developer/425710925) | [Simon Burgess](https://appshunter.io/developer/960547111) |

## What reviewers say

### Ambi

[App page](https://appshunter.io/ios/app/ambi/id777337726)

This app generates unique, ever-changing soundscapes to help you relax and focus. It masks distracting background noise with customizable mixes of various noise types, offering manual control over the sound or automatic randomization. Enhance your audio experience with reverb and an equalizer.

**Highlights:** Algorithmic noise generation, Customizable noise mixes, Manual and automatic sound randomization, Reverb effect, 8-band graphic equalizer, In-app timer (paid), User preset saving (paid)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Ambi Pro | $4.99 | one-time |


### Sleep Noise Machine

[App page](https://appshunter.io/ios/app/sleep-noise-machine/id6743419325)

Generate high-quality white, pink, brown, and black noise with advanced audio customization. Create the ideal sound environment for sleep, focus, or masking distractions with real-time adjustments and a user-friendly interface.

**Highlights:** High-quality white, pink, brown, black noise, 10-band graphic equalizer, Adjustable high-pass and low-pass filters, Real-time audio spectrum visualization, Timer with auto-stop and fade out, Ear fatigue reduction methods, Customizable user presets

**Features:** macOS Compatibility

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Monthly | $2.99 | per month |
| Premium Weekly With Trial | $3.99 | per 7 days |
| Premium Annual | $19.99 | per year |
| Premium Lifetime | $19.99 | one-time |


## Frequently asked questions

### Is Ambi free?

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

### Is Sleep Noise Machine free?

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

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

Sleep Noise Machine is rated higher. Ambi averages 4.3 out of 5 from 87 ratings, while Sleep Noise Machine averages 4.6 from 152 ratings.

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

Ambi shows ads; Sleep Noise Machine does not.

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

Ambi ships an update every 4 months, and Sleep Noise Machine every 4 days. Most recently, Ambi was updated on November 1, 2026 and Sleep 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.*