# Audio Function Generator vs Sound Record Event

The clearest difference is price: Audio Function Generator at Free against Sound Record Event's $0.99. Audio Function Generator also leads on update cadence (every 6 weeks vs every 9 months). Sound Record Event's advantage is in-app purchases (none vs 1) and iOS requirement (12.0 vs 16.0). On ads and device support there is nothing between them.

Audio Function Generator is free to download; Sound Record Event costs $0.99 up front. Audio Function Generator sells 1 one-off in-app purchase. Sound Record Event asks for nothing beyond the download.

Audio Function Generator ships an update every 6 weeks, Sound Record Event every 9 months. The most recent releases landed on November 11, 2026 and November 6, 2026 respectively.

## The numbers

| Metric | Audio Function Generator | Sound Record Event |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| Rating | **[4.7 (2.2K ratings)](https://appshunter.io/ios/app/audio-function-generator/id768229610/reviews)** | — |
| Number of ratings | **2.2K** | — |
| Positive reviews | 77.2% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 6 weeks** | Every 9 months |
| Monetization | Free with in-app purchases | — |
| Size | 13 MB | 3 MB |
| Requires iOS | 16.0 | **12.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Thomas Gruber](https://appshunter.io/developer/342699861) | [方 沈](https://appshunter.io/developer/882296318) |

## 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 | $14.99 | 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


### Sound Record Event

[App page](https://appshunter.io/ios/app/sound-record-event/id918912242)

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

**In-app purchases:** none


## Frequently asked questions

### Is Audio Function Generator free?

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

### Is Sound Record Event free?

Sound Record Event costs $0.99, with no in-app purchases.

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

Neither Audio Function Generator nor Sound Record Event shows ads.

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

Audio Function Generator ships an update every 6 weeks, and Sound Record Event every 9 months. Most recently, Audio Function Generator was updated on November 11, 2026 and Sound Record Event on November 6, 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.*