# Audio Function Generator vs Frequency Generator

The clearest difference is ratings volume: Audio Function Generator at 2.2K against Frequency Generator's 8. Audio Function Generator also leads on iOS requirement (15.5 vs 18.3). Frequency Generator's advantage is review sentiment (100% vs 77%) and rating (5.0 vs 4.7). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Audio Function Generator sells 1 one-off in-app purchase and Frequency Generator sells 2 in-app purchases, starting at $4.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Frequency Generator 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 8, 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 Frequency Generator's.

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

## The numbers

| Metric | Audio Function Generator | Frequency Generator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.7 (2.2K ratings)](https://appshunter.io/ios/app/audio-function-generator/id768229610/reviews) | **[5.0 (8 ratings)](https://appshunter.io/ios/app/frequency-generator/id6468866671/reviews)** |
| Number of ratings | **2.2K** | 8 |
| Positive reviews | 77.1% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Monthly** |
| Monetization | Free with in-app purchases | Freemium |
| Size | 14 MB | 21 MB |
| Requires iOS | **15.5** | 18.3 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Thomas Gruber](https://appshunter.io/developer/342699861) | [Manfred Kuegel](https://appshunter.io/developer/1520736594) |

## 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 Generator

[App page](https://appshunter.io/ios/app/frequency-generator/id6468866671)

Generate precise audio tones for sleep, focus, and relaxation. Explore a wide frequency range, shape waveforms, and access presets like Solfeggio frequencies. An optional Pro upgrade unlocks all features.

**Highlights:** Wide frequency range (1 Hz - 22,000 Hz), Multiple waveforms (sine, square, sawtooth, triangle), Background audio playback, Solfeggio frequencies and musical notes, Binaural beats and isochronic tones, Saved and pinned tone presets, Lock-screen and Control Center controls

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Weekly | $4.99 | per 7 days |
| Pro Yearly | $29.99 | per year |


## Frequently asked questions

### Is Audio Function Generator free?

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

### Is Frequency Generator free?

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

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

Frequency Generator is rated higher. Audio Function Generator averages 4.7 out of 5 from 2.2K ratings, while Frequency Generator averages 5.0 from 8 ratings.

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

Neither Audio Function Generator nor Frequency Generator shows ads.

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

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