# Audio Function Generator vs Tone Generator+ Freq

The clearest difference is in-app purchases: Tone Generator+ Freq at none against Audio Function Generator's 1. Tone Generator+ Freq also leads on update cadence (every 5 days vs every 6 weeks) and rating (5.0 vs 4.7). Audio Function Generator's advantage is ads (none vs shown) and ratings volume (2.2K vs 2). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Audio Function Generator sells 1 one-off in-app purchase. Tone Generator+ Freq asks for nothing beyond the download.

Tone Generator+ Freq 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 Generator+ Freq every 5 days. The most recent releases landed on October 17, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | Audio Function Generator | Tone Generator+ Freq |
| --- | --- | --- |
| 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-generator-plus-freq/id6760830690/reviews)** |
| Number of ratings | **2.2K** | 2 |
| Positive reviews | 77.1% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | Every 6 weeks | **Every 5 days** |
| Monetization | Free with in-app purchases | **Ad-supported** |
| Size | 13 MB | 68 MB |
| Requires iOS | **16.0** | 17.0 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 17+ |
| Developer | [Thomas Gruber](https://appshunter.io/developer/342699861) | [Kyu-Hee Jang](https://appshunter.io/developer/1587578867) |

## 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 Generator+ Freq

[App page](https://appshunter.io/ios/app/tone-generator-plus-freq/id6760830690)

Generate precise audio tones with various waveforms for testing, calibration, and experiments. Offers a wide frequency range and adjustable volume in a simple interface.

**Highlights:** Precise frequency generation, Multiple waveform types (sine, square, sawtooth, triangle), Adjustable volume control, Full audible range support (20 Hz - 20,000 Hz), Clean and stable audio output, Simple user interface

**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 Tone Generator+ Freq free?

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

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

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

### Do Audio Function Generator or Tone Generator+ Freq have ads?

Tone Generator+ Freq shows ads; Audio Function Generator does not.

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

Audio Function Generator ships an update every 6 weeks, and Tone Generator+ Freq every 5 days. Most recently, Audio Function Generator was updated on October 17, 2026 and Tone Generator+ Freq 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.*