# Audio Function Generator vs DTMF Dialer Tool

The clearest difference is ads: Audio Function Generator at none against DTMF Dialer Tool's shown. Audio Function Generator also leads on ratings volume (2.2K vs 13) and rating (4.7 vs 4.5). DTMF Dialer Tool's advantage is update cadence (every 9 days vs every 6 weeks) and monetization model (ad-supported vs free with in-app purchases). On price, in-app purchases, 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 and DTMF Dialer Tool sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Audio Function Generator holds the better App Store score, 4.7 against 4.5. 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.

Audio Function Generator ships an update every 6 weeks, DTMF Dialer Tool every 9 days. The most recent releases landed on September 24, 2026 and September 2, 2026 respectively.

## The numbers

| Metric | Audio Function Generator | DTMF Dialer Tool |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (2.2K ratings)](https://appshunter.io/ios/app/audio-function-generator/id768229610/reviews)** | [4.5 (13 ratings)](https://appshunter.io/ios/app/dtmf-dialer-tool/id6748663059/reviews) |
| Number of ratings | **2.2K** | 13 |
| Positive reviews | 77.1% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 6 weeks | **Every 9 days** |
| Monetization | Free with in-app purchases | **Ad-supported** |
| Size | 14 MB | 5 MB |
| Requires iOS | **15.5** | 15.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Thomas Gruber](https://appshunter.io/developer/342699861) | [Kevin Tang](https://appshunter.io/developer/1780758221) |

## 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


### DTMF Dialer Tool

[App page](https://appshunter.io/ios/app/dtmf-dialer-tool/id6748663059)

Generate and manage DTMF tones for dialing and testing phone numbers. Features include a modern keypad, karaoke-style playback, and favorites management for quick access to frequently used numbers. Ideal for telephony professionals and radio operators.

**Highlights:** Modern DTMF keypad, Karaoke-style playback, Favorites management, Pause support, Reliable tone generation

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| DTMF Dialer Pro | $4.99 | one-time |


## Frequently asked questions

### Is Audio Function Generator free?

Audio Function Generator is free to download, with in-app purchases available.

### Is DTMF Dialer Tool free?

DTMF Dialer Tool is free to download, with in-app purchases available.

### Which has better reviews, Audio Function Generator or DTMF Dialer Tool?

Audio Function Generator is rated higher. Audio Function Generator averages 4.7 out of 5 from 2.2K ratings, while DTMF Dialer Tool averages 4.5 from 13 ratings.

### Do Audio Function Generator or DTMF Dialer Tool have ads?

DTMF Dialer Tool shows ads; Audio Function Generator does not.

### Which is updated more often, Audio Function Generator or DTMF Dialer Tool?

Audio Function Generator ships an update every 6 weeks, and DTMF Dialer Tool every 9 days. Most recently, Audio Function Generator was updated on September 24, 2026 and DTMF Dialer Tool on September 2, 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.*