# Audio Function Generator vs File Conversion Tools

The clearest difference is review sentiment: Audio Function Generator at 77% against File Conversion Tools's 17%. Audio Function Generator also leads on rating (4.7 vs 2.0) and ratings volume (2.2K vs 7). File Conversion Tools's advantage is in-app purchases (none vs 1) and iOS requirement (10.0 vs 15.5). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Audio Function Generator sells 1 one-off in-app purchase. File Conversion Tools asks for nothing beyond the download.

Audio Function Generator holds the better App Store score, 4.7 against 2.0. That said, the two scores are not equally well evidenced: Audio Function Generator has 2.2K ratings behind it against 7, 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 17% of File Conversion Tools's.

Audio Function Generator ships an update every 6 weeks, File Conversion Tools every 3 weeks. The most recent releases landed on October 2, 2026 and September 3, 2026 respectively.

## The numbers

| Metric | Audio Function Generator | File Conversion Tools |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (2.2K ratings)](https://appshunter.io/ios/app/audio-function-generator/id768229610/reviews)** | [2.0 (7 ratings)](https://appshunter.io/ios/app/file-conversion-tools/id1321778916/reviews) |
| Number of ratings | **2.2K** | 7 |
| Positive reviews | **77.1% of reviews** | 16.7% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Every 3 weeks** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 14 MB | 50 MB |
| Requires iOS | 15.5 | **10.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Thomas Gruber](https://appshunter.io/developer/342699861) | [Harald Meyer](https://appshunter.io/developer/389514018) |

## 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


### File Conversion Tools

[App page](https://appshunter.io/ios/app/file-conversion-tools/id1321778916)

This utility app allows users to convert a wide range of file types, including documents, music, eBooks, and images. It supports numerous target formats and offers advanced options like PDF password protection and metadata removal from images.

**Highlights:** Convert music to multiple audio formats, Convert documents to DOC, PDF, XLS, PPT, and more, Convert eBooks to EPUB, MOBI, PDF, and other formats, Lock and unlock PDFs with password protection, Convert documents to images, Remove image metadata including GPS data

**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 File Conversion Tools free?

File Conversion Tools is free to download, with no in-app purchases.

### Which has better reviews, Audio Function Generator or File Conversion Tools?

Audio Function Generator is rated higher. Audio Function Generator averages 4.7 out of 5 from 2.2K ratings, while File Conversion Tools averages 2.0 from 7 ratings.

### Do Audio Function Generator or File Conversion Tools have ads?

Neither Audio Function Generator nor File Conversion Tools shows ads.

### Which is updated more often, Audio Function Generator or File Conversion Tools?

Audio Function Generator ships an update every 6 weeks, and File Conversion Tools every 3 weeks. Most recently, Audio Function Generator was updated on October 2, 2026 and File Conversion Tools on September 3, 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.*