# Audio Function Generator vs Tone Gen Pro

The clearest difference is ratings volume: Audio Function Generator at 2.2K against Tone Gen Pro's 45. Audio Function Generator also leads on rating (4.7 vs 4.5) and update cadence (every 6 weeks vs every 3 months). Tone Gen Pro's advantage is iOS requirement (12.0 vs 15.5). On price, review sentiment, 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 Tone Gen Pro sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Audio Function Generator holds the better App Store score, 4.7 against 4.5. That said, the two scores are not equally well evidenced: Audio Function Generator has 2.2K ratings behind it against 45, 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 75% of Tone Gen Pro's.

Audio Function Generator ships an update every 6 weeks, Tone Gen Pro every 3 months. The most recent releases landed on September 24, 2026 and July 6, 2026 respectively.

## The numbers

| Metric | Audio Function Generator | Tone Gen Pro |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (2.2K ratings)](https://appshunter.io/ios/app/audio-function-generator/id768229610/reviews)** | [4.5 (45 ratings)](https://appshunter.io/ios/app/tone-gen-pro/id1448112303/reviews) |
| Number of ratings | **2.2K** | 45 |
| Positive reviews | **77.1% of reviews** | 75.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 6 weeks** | Every 3 months |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 14 MB | 44 MB |
| Requires iOS | 15.5 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 12+ |
| Developer | [Thomas Gruber](https://appshunter.io/developer/342699861) | [Ibrahim Al-Sammarraie](https://appshunter.io/developer/1448112302) |

## 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


### Tone Gen Pro

[App page](https://appshunter.io/ios/app/tone-gen-pro/id1448112303)

Create various audio signals, including single tones, sweeps, and merged sounds, with extensive parameter control. Ideal for students, musicians, educators, and audio professionals exploring sound.

**Highlights:** Generate single type signals (sine, square, noise), Create sweep (chirp) signals (linear/exponential), Generate click signals with adjustable duty cycle, Merge multiple tones and sweeps, Frequencies up to 20 kHz, Extensive parameter control

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Tone Gen Pro Full | $1.99 | one-time |


## Frequently asked questions

### Is Audio Function Generator free?

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

### Is Tone Gen Pro free?

Tone Gen Pro is free to download, with in-app purchases available.

### Which has better reviews, Audio Function Generator or Tone Gen Pro?

Audio Function Generator is rated higher. Audio Function Generator averages 4.7 out of 5 from 2.2K ratings, while Tone Gen Pro averages 4.5 from 45 ratings.

### Do Audio Function Generator or Tone Gen Pro have ads?

Neither Audio Function Generator nor Tone Gen Pro shows ads.

### Which is updated more often, Audio Function Generator or Tone Gen Pro?

Audio Function Generator ships an update every 6 weeks, and Tone Gen Pro every 3 months. Most recently, Audio Function Generator was updated on September 24, 2026 and Tone Gen Pro on July 6, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*