# Sound Generator vs Audio Function Generator

The clearest difference is rating: Audio Function Generator at 4.7 against Sound Generator's 2.5. Audio Function Generator also leads on ratings volume (2.2K vs 2) and update cadence (every 6 weeks vs every 5 months). Sound Generator's advantage is in-app purchases (none vs 1) and review sentiment (100% vs 77%). On price, ads and device support there is nothing between them.

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

Audio Function Generator holds the better App Store score, 4.7 against 2.5. That said, the two scores are not equally well evidenced: Audio Function Generator has 2.2K ratings behind it against 2, so its average is the more settled of the two. Written reviews complicate that: 100% of Sound Generator's written reviews are positive against 77% of Audio Function Generator's, so the app with the better star average is not the one people write more warmly about.

Sound Generator ships an update every 5 months, Audio Function Generator every 6 weeks. The most recent releases landed on September 9, 2026 and September 24, 2026 respectively.

## The numbers

| Metric | Sound Generator | Audio Function Generator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.5 (2 ratings)](https://appshunter.io/ios/app/sound-generator/id657058058/reviews) | **[4.7 (2.2K ratings)](https://appshunter.io/ios/app/audio-function-generator/id768229610/reviews)** |
| Number of ratings | 2 | **2.2K** |
| Positive reviews | **100.0% of reviews** | 77.1% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 6 weeks** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 5 MB | 14 MB |
| Requires iOS | **7.0** | 15.5 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [XIDA Design & Technik](https://appshunter.io/developer/439501694) | [Thomas Gruber](https://appshunter.io/developer/342699861) |

## What reviewers say

### Sound Generator

[App page](https://appshunter.io/ios/app/sound-generator/id657058058)

Create custom audio tones by adjusting parameters like frequency, sample rate, and duration. This utility tool allows for precise sound generation for various purposes.

**Highlights:** Generate custom sounds, Adjust frequency, Set sample rate, Control sound length, Simple interface

**Features:** macOS Compatibility

**In-app purchases:** none


### 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


## Frequently asked questions

### Is Sound Generator free?

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

### Is Audio Function Generator free?

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

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

Audio Function Generator is rated higher. Sound Generator averages 2.5 out of 5 from 2 ratings, while Audio Function Generator averages 4.7 from 2.2K ratings.

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

Neither Sound Generator nor Audio Function Generator shows ads.

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

Sound Generator ships an update every 5 months, and Audio Function Generator every 6 weeks. Most recently, Sound Generator was updated on September 9, 2026 and Audio Function 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.*