# Audio Function Generator vs Sonic Pitch Sound Generator

The clearest difference is monetization model: Audio Function Generator at free with in-app purchases against Sonic Pitch Sound Generator's subscription. Audio Function Generator also leads on ads (none vs shown) and rating (4.7 vs 4.5). On price, review sentiment, ratings volume and update cadence there is nothing between them.

Both are free to download. Audio Function Generator sells 1 one-off in-app purchase and Sonic Pitch Sound Generator sells 2 in-app purchases, starting at $5.99 per 7 days. 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. Both are backed by a comparable volume of ratings — 2.2K and 1.8K respectively. Written reviews point the same way: 77% of Audio Function Generator's written reviews are positive against 71% of Sonic Pitch Sound Generator's.

Audio Function Generator ships an update every 6 weeks, Sonic Pitch Sound Generator every 5 weeks. The most recent releases landed on September 24, 2026 and September 22, 2026 respectively.

## The numbers

| Metric | Audio Function Generator | Sonic Pitch Sound Generator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (2.2K ratings)](https://appshunter.io/ios/app/audio-function-generator/id768229610/reviews)** | [4.5 (1.8K ratings)](https://appshunter.io/ios/app/sonic-pitch-sound-generator/id1187701748/reviews) |
| Number of ratings | **2.2K** | 1.8K |
| Positive reviews | **77.1% of reviews** | 71.5% of reviews |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 6 weeks | **Every 5 weeks** |
| Monetization | **Free with in-app purchases** | Subscription |
| Size | 14 MB | 28 MB |
| Requires iOS | **15.5** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Thomas Gruber](https://appshunter.io/developer/342699861) | [茂利 王](https://appshunter.io/developer/1155900880) |

## 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


### Sonic Pitch Sound Generator

[App page](https://appshunter.io/ios/app/sonic-pitch-sound-generator/id1187701748)

Generate precise sound waves with adjustable frequencies and various waveform types. Use it for audio testing, insect repulsion, pet training, or as a prank tool. Features include a decibel meter and stereo sound tests.

**Highlights:** Adjustable sine, square, triangle, and sawtooth waveforms, Precise frequency control from 0Hz to 25kHz, Wave visualization, Insect and mosquito repellent tones, Dog whistle functionality, Stereo and bass sound tests, Real-time decibel meter

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Weekly Subscription | $5.99 | per 7 days |
| Premium Yearly Subscription | $19.99 | per year |

**What reviewers like**

- 👍 Simple and easy to use
- 🚀 Precise tone generation
- 💡 Useful for testing audio equipment
- 💡 Helpful for tinnitus sufferers
- 💡 Effective for repelling mosquitoes and annoying people

**What reviewers complain about**

- 🐛 Sensitive slider makes it difficult to dial in precise frequencies
- 🔍 Lack of instructions on which frequencies to use for specific purposes
- 📢 Intrusive and frequent ads
- 🔋 Ads can cause app crashes and drain battery
- 🚫 Limited free functionality, requires payment to remove ads

**Reported bugs**

- Slider is too sensitive, making it hard to select precise frequencies
- Ads sometimes play loudly and unexpectedly, potentially damaging speakers
- App crashes when trying to close full-screen ads

**Requested features**

- Ability to save and name custom frequency presets
- Option to manually enter exact frequency values
- Timer or background playback mode
- Paid ad-free version


## Frequently asked questions

### Is Audio Function Generator free?

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

### Is Sonic Pitch Sound Generator free?

Sonic Pitch Sound Generator is free to download, with in-app purchases available.

### Which has better reviews, Audio Function Generator or Sonic Pitch Sound Generator?

Audio Function Generator is rated higher. Audio Function Generator averages 4.7 out of 5 from 2.2K ratings, while Sonic Pitch Sound Generator averages 4.5 from 1.8K ratings.

### Do Audio Function Generator or Sonic Pitch Sound Generator have ads?

Sonic Pitch Sound Generator shows ads; Audio Function Generator does not.

### Which is updated more often, Audio Function Generator or Sonic Pitch Sound Generator?

Audio Function Generator ships an update every 6 weeks, and Sonic Pitch Sound Generator every 5 weeks. Most recently, Audio Function Generator was updated on September 24, 2026 and Sonic Pitch Sound Generator on September 22, 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.*