# Audio Function Generator vs iWoofer Pro

The clearest difference is price: Audio Function Generator at Free against iWoofer Pro's $4.99. Audio Function Generator also leads on rating (4.7 vs 2.7) and ratings volume (2.2K vs 13). iWoofer Pro's advantage is in-app purchases (none vs 1) and iOS requirement (11.0 vs 15.5). On ads and device support there is nothing between them.

Audio Function Generator is free to download; iWoofer Pro costs $4.99 up front. Audio Function Generator sells 1 one-off in-app purchase. iWoofer Pro asks for nothing beyond the download.

Audio Function Generator holds the better App Store score, 4.7 against 2.7. That said, the two scores are not equally well evidenced: Audio Function Generator has 2.2K ratings behind it against 13, 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 54% of iWoofer Pro's.

Audio Function Generator ships an update every 6 weeks, iWoofer Pro every 6 months. The most recent releases landed on September 24, 2026 and September 8, 2026 respectively.

## The numbers

| Metric | Audio Function Generator | iWoofer Pro |
| --- | --- | --- |
| Price | **Free** | $4.99 |
| Rating | **[4.7 (2.2K ratings)](https://appshunter.io/ios/app/audio-function-generator/id768229610/reviews)** | [2.7 (13 ratings)](https://appshunter.io/ios/app/iwoofer-pro/id1229235964/reviews) |
| Number of ratings | **2.2K** | 13 |
| Positive reviews | **77.1% of reviews** | 53.8% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 6 weeks** | Every 6 months |
| Monetization | **Free with in-app purchases** | Paid |
| Size | 14 MB | 1 MB |
| Requires iOS | 15.5 | **11.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Thomas Gruber](https://appshunter.io/developer/342699861) | [ARTEM KHLYUPIN](https://appshunter.io/developer/1229235963) |

## 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


### iWoofer Pro

[App page](https://appshunter.io/ios/app/iwoofer-pro/id1229235964)

Control your wireless subwoofer's DSP functions with this app. It offers low-latency, pro-grade room correction without needing an external microphone. The system features an open hardware design for flexible integration.

**Highlights:** Wireless subwoofer DSP control, Intuitive DSP function management, Low latency FIR/IIR filtering, Pro-grade minimum phase FIR room correction, No external microphone required, Open hardware design

**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 iWoofer Pro free?

iWoofer Pro costs $4.99, with no in-app purchases.

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

Audio Function Generator is rated higher. Audio Function Generator averages 4.7 out of 5 from 2.2K ratings, while iWoofer Pro averages 2.7 from 13 ratings.

### Do Audio Function Generator or iWoofer Pro have ads?

Neither Audio Function Generator nor iWoofer Pro shows ads.

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

Audio Function Generator ships an update every 6 weeks, and iWoofer Pro every 6 months. Most recently, Audio Function Generator was updated on September 24, 2026 and iWoofer Pro on September 8, 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.*