# Audio Function Generator vs Sonitus

The clearest difference is review sentiment: Audio Function Generator at 77% against Sonitus's 25%. Audio Function Generator also leads on rating (4.7 vs 3.0) and ratings volume (2.2K vs 4). Sonitus's advantage is in-app purchases (none vs 1). On price, ads, device support and iOS requirement there is nothing between them.

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

Audio Function Generator holds the better App Store score, 4.7 against 3.0. That said, the two scores are not equally well evidenced: Audio Function Generator has 2.2K ratings behind it against 4, 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 25% of Sonitus's.

## The numbers

| Metric | Audio Function Generator | Sonitus |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (2.2K ratings)](https://appshunter.io/ios/app/audio-function-generator/id768229610/reviews)** | [3.0 (4 ratings)](https://appshunter.io/ios/app/sonitus/id1541742017/reviews) |
| Number of ratings | **2.2K** | 4 |
| Positive reviews | **77.1% of reviews** | 25.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 6 weeks | — |
| Monetization | Free with in-app purchases | **Free** |
| Size | 14 MB | 1 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) | [Bastiaan Verreijt](https://appshunter.io/developer/1541742019) |

## 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


### Sonitus

[App page](https://appshunter.io/ios/app/sonitus/id1541742017)

Generate audio frequencies from 20Hz to 20kHz. Test your hearing, tune instruments, or analyze audio equipment with fixed frequencies or sweeps. Input frequencies precisely via keyboard or dial.

**Highlights:** Generate audio frequencies (20Hz-20kHz), Hearing test functionality, Instrument tuning aid, Audio equipment testing, Fixed frequency selection, Logarithmic frequency sweep

**Features:** macOS Compatibility

**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 Sonitus free?

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

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

Audio Function Generator is rated higher. Audio Function Generator averages 4.7 out of 5 from 2.2K ratings, while Sonitus averages 3.0 from 4 ratings.

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

Neither Audio Function Generator nor Sonitus shows ads.

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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.*