# Audio Function Generator vs Frequency Sound Generator

The clearest difference is price: Audio Function Generator at Free against Frequency Sound Generator's $0.99. Audio Function Generator also leads on ratings volume (2.2K vs 53) and review sentiment (77% vs 61%). Frequency Sound Generator's advantage is in-app purchases (none vs 1) and iOS requirement (9.0 vs 15.5). On rating, update cadence, ads and device support there is nothing between them.

Audio Function Generator is free to download; Frequency Sound Generator costs $0.99 up front. Audio Function Generator sells 1 one-off in-app purchase. Frequency Sound 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 4.6 for Frequency Sound Generator. That said, the two scores are not equally well evidenced: Audio Function Generator has 2.2K ratings behind it against 53, so its average is the more settled of the two. Written reviews are what separate them: 77% of Audio Function Generator's written reviews are positive against 61% of Frequency Sound Generator's.

Audio Function Generator ships an update every 6 weeks, Frequency Sound Generator every 2 months. The most recent releases landed on October 10, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | Audio Function Generator | Frequency Sound Generator |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| Rating | **[4.7 (2.2K ratings)](https://appshunter.io/ios/app/audio-function-generator/id768229610/reviews)** | [4.6 (53 ratings)](https://appshunter.io/ios/app/frequency-sound-generator/id1098669497/reviews) |
| Number of ratings | **2.2K** | 53 |
| Positive reviews | **77.1% of reviews** | 60.7% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 6 weeks** | Every 2 months |
| Monetization | **Free with in-app purchases** | Paid |
| Size | 14 MB | 13 MB |
| Requires iOS | 15.5 | **9.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Thomas Gruber](https://appshunter.io/developer/342699861) | [Aleksandar Mlazev](https://appshunter.io/developer/1093798140) |

## 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


### Frequency Sound Generator

[App page](https://appshunter.io/ios/app/frequency-sound-generator/id1098669497)

Create a wide variety of sounds and signals with this easy-to-use wave form sound generator. Dynamically adjust sound signals in real time with multiple oscillators, wave forms, and precise frequency controls.

**Highlights:** 3 oscillators, Multiple wave forms per oscillator, Accurate frequency selector, Real-time controls, Volume and modulation control, Save and load sounds

**Features:** 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 Frequency Sound Generator free?

Frequency Sound Generator costs $0.99, with no in-app purchases.

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

Audio Function Generator is rated higher. Audio Function Generator averages 4.7 out of 5 from 2.2K ratings, while Frequency Sound Generator averages 4.6 from 53 ratings.

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

Neither Audio Function Generator nor Frequency Sound Generator shows ads.

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

Audio Function Generator ships an update every 6 weeks, and Frequency Sound Generator every 2 months. Most recently, Audio Function Generator was updated on October 10, 2026 and Frequency Sound Generator on October 13, 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.*