# Audio Function Generator vs White Noise Plus

The clearest difference is update cadence: Audio Function Generator at every 6 weeks against White Noise Plus's every 15 months. Audio Function Generator also leads on ratings volume (2.2K vs 28) and iOS requirement (16.0 vs 18.6). White Noise Plus's advantage is monetization model (free vs free with in-app purchases) and review sentiment (100% vs 77%). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Audio Function Generator sells 1 one-off in-app purchase and White Noise Plus sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

White Noise Plus holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: Audio Function Generator has 2.2K ratings behind it against 28, so its average is the more settled of the two. Written reviews point the same way: 77% of Audio Function Generator's written reviews are positive against 100% of White Noise Plus's.

Audio Function Generator ships an update every 6 weeks, White Noise Plus every 15 months. The most recent releases landed on October 17, 2026 and September 17, 2026 respectively.

## The numbers

| Metric | Audio Function Generator | White Noise Plus |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.7 (2.2K ratings)](https://appshunter.io/ios/app/audio-function-generator/id768229610/reviews) | **[5.0 (28 ratings)](https://appshunter.io/ios/app/white-noise-plus/id1281372285/reviews)** |
| Number of ratings | **2.2K** | 28 |
| Positive reviews | 77.1% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 6 weeks** | Every 15 months |
| Monetization | Free with in-app purchases | **Free** |
| Size | 13 MB | 12 MB |
| Requires iOS | **16.0** | 18.6 |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Thomas Gruber](https://appshunter.io/developer/342699861) | [David Albers](https://appshunter.io/developer/1281372284) |

## What reviewers say

### Audio Function Generator

[App page](https://appshunter.io/ios/app/audio-function-generator/id768229610)

Generate various audio test tones, including sine, square, triangle, and sawtooth waves. Explore frequency and volume sweeps, noise generation, and custom preset creation. Advanced features like extended frequency ranges and multi-tone playback are available with an upgrade.

**Highlights:** Generate sine, square, triangle, and sawtooth tones, Frequency and volume sweep generation, Noise generation (white, pink, violet, etc.), Custom preset creation and saving, Extended frequency range (PRO feature), Multi-tone playback (PRO feature)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Upgrade to PRO | $9.99 | one-time |

**What reviewers like**

- 👍 Great app
- 🎶 Helps with Tinnitus
- 💯 Best app I've paid for
- 🔍 Highly recommended
- 🎨 Attention to detail

**What reviewers complain about**

- 🐛 Crashes
- 💰 Deceptive/Money hungry
- 🔒 Basic features paywalled
- 🔒 Limited without paying
- 🔒 Removed functionality to push paid version

**Reported bugs**

- Crashes on launch
- Volume slider issues
- Airplay not working
- Sound distortion when display is active

**Requested features**

- Add download/save feature for custom sounds
- Improve sweep function (continuous mode, better frequency control)
- Add more multi-frequency rows
- Implement 432Hz base frequency option
- Add phase control for noise generators


### White Noise Plus

[App page](https://appshunter.io/ios/app/white-noise-plus/id1281372285)

This utility app provides a variety of ambient sounds like white, brown, and pink noise to aid relaxation and sleep. It includes customizable features such as a sleep timer, volume fading, and theme options. Integration with Siri Shortcuts and widgets enhances user convenience.

**Highlights:** White, brown, and pink noise generation, Sleep timer, Wavy and fading volume control, Dark/light theme options, Siri Shortcuts support, Widget integration

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium | $3.00 | one-time |


## Frequently asked questions

### Is Audio Function Generator free?

Audio Function Generator is free to download, with in-app purchases available.

### Is White Noise Plus free?

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

### Which has better reviews, Audio Function Generator or White Noise Plus?

White Noise Plus is rated higher. Audio Function Generator averages 4.7 out of 5 from 2.2K ratings, while White Noise Plus averages 5.0 from 28 ratings.

### Do Audio Function Generator or White Noise Plus have ads?

Neither Audio Function Generator nor White Noise Plus shows ads.

### Which is updated more often, Audio Function Generator or White Noise Plus?

Audio Function Generator ships an update every 6 weeks, and White Noise Plus every 15 months. Most recently, Audio Function Generator was updated on October 17, 2026 and White Noise Plus on September 17, 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.*