# Audio Function Generator vs Woofer Box Calculator PRO

The clearest difference is price: Audio Function Generator at Free against Woofer Box Calculator PRO's $4.99. Audio Function Generator also leads on rating (4.7 vs 3.2) and review sentiment (77% vs 41%). Woofer Box Calculator PRO's advantage is in-app purchases (none vs 1) and iOS requirement (7.0 vs 16.0). On ads and device support there is nothing between them.

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

Audio Function Generator holds the better App Store score, 4.7 against 3.2. That said, the two scores are not equally well evidenced: Audio Function Generator has 2.2K ratings behind it against 5, 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 41% of Woofer Box Calculator PRO's.

Audio Function Generator ships an update every 6 weeks, Woofer Box Calculator PRO every 18 months. The most recent releases landed on November 1, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | Audio Function Generator | Woofer Box Calculator PRO |
| --- | --- | --- |
| Price | **Free** | $4.99 |
| Rating | **[4.7 (2.2K ratings)](https://appshunter.io/ios/app/audio-function-generator/id768229610/reviews)** | [3.2 (5 ratings)](https://appshunter.io/ios/app/woofer-box-calculator-pro/id887935204/reviews) |
| Number of ratings | **2.2K** | 5 |
| Positive reviews | **77.2% of reviews** | 41.2% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 6 weeks** | Every 18 months |
| Monetization | **Free with in-app purchases** | Paid |
| Size | 13 MB | 4 MB |
| Requires iOS | 16.0 | **7.0** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Thomas Gruber](https://appshunter.io/developer/342699861) | [Matjaz Marolt](https://appshunter.io/developer/874326830) |

## 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


### Woofer Box Calculator PRO

[App page](https://appshunter.io/ios/app/woofer-box-calculator-pro/id887935204)

Design custom enclosures for car subwoofers with advanced calculations. This tool considers cabin gain, power compression, and port compression to predict final SPL. Save and load projects, drivers, and vehicles for easy management.

**Highlights:** Subwoofer enclosure design, Cabin gain consideration, Power and port compression, Predict final SPL, Gross volume handling, Vented enclosure calculation, Save and load projects

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

**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 Woofer Box Calculator PRO free?

Woofer Box Calculator PRO costs $4.99, with no in-app purchases.

### Which has better reviews, Audio Function Generator or Woofer Box Calculator PRO?

Audio Function Generator is rated higher. Audio Function Generator averages 4.7 out of 5 from 2.2K ratings, while Woofer Box Calculator PRO averages 3.2 from 5 ratings.

### Do Audio Function Generator or Woofer Box Calculator PRO have ads?

Neither Audio Function Generator nor Woofer Box Calculator PRO shows ads.

### Which is updated more often, Audio Function Generator or Woofer Box Calculator PRO?

Audio Function Generator ships an update every 6 weeks, and Woofer Box Calculator PRO every 18 months. Most recently, Audio Function Generator was updated on November 1, 2026 and Woofer Box Calculator PRO on October 12, 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.*