# Audio Function Generator vs TONE Telegenics

The clearest difference is in-app purchases: TONE Telegenics at none against Audio Function Generator's 1. TONE Telegenics also leads on rating (5.0 vs 4.7). Audio Function Generator's advantage is ratings volume (2.2K vs 2). 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. TONE Telegenics asks for nothing beyond the download.

TONE Telegenics holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: Audio Function Generator has 2.2K ratings behind it against 2, so its average is the more settled of the two.

Audio Function Generator ships an update every 6 weeks, TONE Telegenics every 3 weeks. The most recent releases landed on October 29, 2026 and September 24, 2026 respectively.

## The numbers

| Metric | Audio Function Generator | TONE Telegenics |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.7 (2.2K ratings)](https://appshunter.io/ios/app/audio-function-generator/id768229610/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/tone-telegenics/id6476420592/reviews)** |
| Number of ratings | **2.2K** | 2 |
| Positive reviews | 77.2% 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 | 13 MB | 24 MB |
| Requires iOS | 16.0 | **15.0** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Thomas Gruber](https://appshunter.io/developer/342699861) | [The Tone Knows](https://appshunter.io/developer/1610407466) |

## 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


### TONE Telegenics

[App page](https://appshunter.io/ios/app/tone-telegenics/id6476420592)

This application analyzes and visualizes audio frequencies in any environment. It displays detected sound waves in a detailed graph view, offering real-time clarity and precision for acoustic research, noise control, and audio production.

**Highlights:** Detect audio frequencies in any environment, Real-time graph visualization of sound data, Precise sound analysis feedback, Versatile indoor and outdoor use, Visualize audio data in real-time

**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 TONE Telegenics free?

TONE Telegenics is free to download, with no in-app purchases.

### Which has better reviews, Audio Function Generator or TONE Telegenics?

TONE Telegenics is rated higher. Audio Function Generator averages 4.7 out of 5 from 2.2K ratings, while TONE Telegenics averages 5.0 from 2 ratings.

### Do Audio Function Generator or TONE Telegenics have ads?

Neither Audio Function Generator nor TONE Telegenics shows ads.

### Which is updated more often, Audio Function Generator or TONE Telegenics?

Audio Function Generator ships an update every 6 weeks, and TONE Telegenics every 3 weeks. Most recently, Audio Function Generator was updated on October 29, 2026 and TONE Telegenics on September 24, 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.*