# Audio Function Generator PRO vs SoundTools Pro

Audio Function Generator PRO and SoundTools Pro are too close to call on the numbers: across 5 compared parameters — price, ads, in-app purchases and device support among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Audio Function Generator PRO costs $9.99 and SoundTools Pro $9.99 up front. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | Audio Function Generator PRO | SoundTools Pro |
| --- | --- | --- |
| Price | $9.99 | $9.99 |
| Rating | **[4.8 (269 ratings)](https://appshunter.io/ios/app/audio-function-generator-pro/id895074703/reviews)** | — |
| Number of ratings | **269** | — |
| Positive reviews | 87.9% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 weeks | — |
| Monetization | Free | — |
| Size | 13 MB | 4 MB |
| Requires iOS | 15.5 | **15.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Thomas Gruber](https://appshunter.io/developer/342699861) | [Juerg Andres](https://appshunter.io/developer/1896296893) |

## What reviewers say

### Audio Function Generator PRO

[App page](https://appshunter.io/ios/app/audio-function-generator-pro/id895074703)

Generate various audio test tones, including sine, square, and sawtooth waves. Explore frequency and volume sweeps, custom presets, and different types of noise. Advanced settings allow for fine-tuning signal parameters and creating complex multi-tone sequences.

**Highlights:** Generate sine, square, triangular, and sawtooth tones, Frequency and volume sweep generation, Customizable presets and configurations, Multiple noise types (White, Pink, Violet, etc.), Advanced signal parameter control, Multi-tone and dual function generation

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

**In-app purchases:** none

**What reviewers like**

- ✨ Superb craftsmanship and work
- 🚀 Excellent performance on older devices
- 💡 History feature is a great addition
- 👍 Versatile and powerful app
- 🎶 Great for binaural beats and sound creation

**What reviewers complain about**

- 📉 Linear sweep is useless
- ❓ Missing PWM functionality
- ❓ Missing Terzrauschen (third-octave noise)
- 🐛 Volume button issues
- 🐛 GUI is bad

**Reported bugs**

- Volume button issues (jumps up and down, displays wrong level)
- Update crashes on iPad Air2 when changing screens
- App opens AppStore repeatedly after purchase
- Buttons don't respond, settings don't keep
- Frequencies stick, program is useless

**Requested features**

- Logarithmic sweeps and frequency slider scale
- PWM functionality
- Terzrauschen (third-octave noise)
- Ping-pong sweeps in Multitone windows
- Sweeping of noise/adding noise in Multitone sweep with sweeping bandpass filter


### SoundTools Pro

[App page](https://appshunter.io/ios/app/soundtools-pro/id6766501581)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Audio Function Generator PRO free?

Audio Function Generator PRO costs $9.99, with no in-app purchases.

### Is SoundTools Pro free?

SoundTools Pro costs $9.99, with no in-app purchases.

### Do Audio Function Generator PRO or SoundTools Pro have ads?

Neither Audio Function Generator PRO nor SoundTools Pro 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.*