# Audio Function Generator vs Noise Generator

The clearest difference is in-app purchases: Noise Generator at none against Audio Function Generator's 1. Audio Function Generator's advantage is ads (none vs shown). On price, rating, review sentiment and ratings volume there is nothing between them.

Both are free to download. Audio Function Generator sells 1 one-off in-app purchase. Noise Generator asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 4.7 for Audio Function Generator against 4.7 for Noise Generator. Both are backed by a comparable volume of ratings — 2.2K and 2K respectively. Written reviews are what separate them: 77% of Audio Function Generator's written reviews are positive against 75% of Noise Generator's.

Audio Function Generator ships an update every 6 weeks, Noise Generator every 3 weeks. Both last shipped on September 24, 2026.

## The numbers

| Metric | Audio Function Generator | Noise Generator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.7 (2.2K ratings)](https://appshunter.io/ios/app/audio-function-generator/id768229610/reviews) | [4.7 (2K ratings)](https://appshunter.io/ios/app/noise-generator-full-spectrum/id1206450560/reviews) |
| Number of ratings | **2.2K** | 2K |
| Positive reviews | **77.1% of reviews** | 74.7% of reviews |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | Every 6 weeks | **Every 3 weeks** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 14 MB | 25 MB |
| Requires iOS | 15.5 | **14.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Thomas Gruber](https://appshunter.io/developer/342699861) | [TMSOFT](https://appshunter.io/developer/288669797) |

## 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


### Noise Generator

[App page](https://appshunter.io/ios/app/noise-generator-full-spectrum/id1206450560)

Generate a variety of custom color noises, including brown, pink, white, blue, and violet. Fine-tune your audio experience with low and high cut filters. This app offers a simple interface that remembers your settings for quick, personalized sound generation.

**Highlights:** Generate brown, pink, white, blue, and violet noise, Low and high cut filters for customization, Simple interface remembers settings, Advanced mathematical formulas for audio generation, AirPlay support for external devices

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

**In-app purchases:** none

**What reviewers like**

- 🚀 Spot on performance
- 👍 Customizable noise options
- 🚀 Wide range of frequency spectrum
- 👍 Convenient for sleeping and focus
- 👍 Helps with tinnitus and anxiety

**What reviewers complain about**

- 🐛 Crashes and stops working
- 🐛 Ads interfere with functionality
- 🔋 High battery drain
- 🐛 Unreliable, cuts out randomly
- 🐛 Detectable sound pattern loop

**Reported bugs**

- Scrolling issues on iPhone 13 Pro
- Beeping noise looping in background
- Stops playing when app is in background

**Requested features**

- Add green noise option
- Ability to save custom presets
- Include a sleep timer
- Landscape mode support
- Equalizer/smoother frequency controls


## Frequently asked questions

### Is Audio Function Generator free?

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

### Is Noise Generator free?

Noise Generator is free to download, with no in-app purchases.

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

Audio Function Generator and Noise Generator are both rated 4.7 out of 5 on the App Store, from 2.2K and 2K ratings respectively.

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

Noise Generator shows ads; Audio Function Generator does not.

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

Audio Function Generator ships an update every 6 weeks, and Noise Generator every 3 weeks. Most recently, Audio Function Generator was updated on September 24, 2026 and Noise Generator on September 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.*