# Audio Function Generator PRO vs Tone Generator

The clearest difference is price: Tone Generator at Free against Audio Function Generator PRO's $9.99. Tone Generator also leads on ratings volume (2.6K vs 269) and update cadence (every 3 weeks vs every 6 weeks). Audio Function Generator PRO's advantage is ads (none vs shown) and review sentiment (88% vs 70%). On rating, in-app purchases, device support and iOS requirement there is nothing between them.

Tone Generator is free to download; Audio Function Generator PRO costs $9.99 up front. Neither carries in-app purchases, so what you see is what you pay.

On the App Store both sit at effectively the same score — 4.8 for Audio Function Generator PRO against 4.7 for Tone Generator. That said, the two scores are not equally well evidenced: Tone Generator has 2.6K ratings behind it against 269, so its average is the more settled of the two. Written reviews are what separate them: 88% of Audio Function Generator PRO's written reviews are positive against 70% of Tone Generator's.

Audio Function Generator PRO ships an update every 6 weeks, Tone Generator every 3 weeks. The most recent releases landed on October 29, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | Audio Function Generator PRO | Tone Generator |
| --- | --- | --- |
| Price | $9.99 | **Free** |
| Rating | **[4.8 (269 ratings)](https://appshunter.io/ios/app/audio-function-generator-pro/id895074703/reviews)** | [4.7 (2.6K ratings)](https://appshunter.io/ios/app/tone-generator-audio-sound-hz/id1206449238/reviews) |
| Number of ratings | 269 | **2.6K** |
| Positive reviews | **87.9% of reviews** | 70.3% of reviews |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 6 weeks | **Every 3 weeks** |
| Monetization | **Free** | Ad-supported |
| Size | 13 MB | 37 MB |
| Requires iOS | 16.0 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Thomas Gruber](https://appshunter.io/developer/342699861) | [TMSOFT](https://appshunter.io/developer/288669797) |

## 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


### Tone Generator

[App page](https://appshunter.io/ios/app/tone-generator-audio-sound-hz/id1206449238)

Create pure sine wave audio tones across a wide frequency range. This tool is ideal for tuning instruments, conducting hearing tests, performing science experiments, and testing audio equipment. Easily adjust frequencies and volume, with support for AirPlay devices.

**Highlights:** Generate sine wave tones, Frequency range 20Hz - 22,000Hz, Instrument tuning, Hearing tests, Science experiments, Audio equipment testing, AirPlay support

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

**In-app purchases:** none

**What reviewers like**

- 👍 Simple and straightforward
- 🚀 Works as expected
- 💡 Useful for testing and tuning
- 💡 Helps identify hearing range

**What reviewers complain about**

- 🐛 Ads can interfere with usage
- 🔧 Difficulty fine-tuning frequency
- 🔧 No amplitude/volume display
- 🔧 Limited functionality

**Reported bugs**

- Sound cuts out when changing frequency
- No sound output on some devices
- Ads block access to controls

**Requested features**

- Add frequency sweep/sweep function
- Allow manual frequency input
- Provide volume/amplitude display
- Implement more precise frequency control
- Add timer/sleep function


## Frequently asked questions

### Is Audio Function Generator PRO free?

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

### Is Tone Generator free?

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

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

Audio Function Generator PRO is rated higher. Audio Function Generator PRO averages 4.8 out of 5 from 269 ratings, while Tone Generator averages 4.7 from 2.6K ratings.

### Do Audio Function Generator PRO or Tone Generator have ads?

Tone Generator shows ads; Audio Function Generator PRO does not.

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

Audio Function Generator PRO ships an update every 6 weeks, and Tone Generator every 3 weeks. Most recently, Audio Function Generator PRO was updated on October 29, 2026 and Tone Generator on October 28, 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.*