# Audio Function Generator vs Brainwaves Frequency Generator

The clearest difference is update cadence: Brainwaves Frequency Generator at every 4 days against Audio Function Generator's every 6 weeks. Audio Function Generator's advantage is rating (4.7 vs 4.4) and ratings volume (2.2K vs 169). On price, review sentiment, ads and in-app purchases there is nothing between them.

Both are free to download. Audio Function Generator sells 1 one-off in-app purchase and Brainwaves Frequency Generator sells 7 in-app purchases, starting at $9.99 per month. Whichever you choose, the download price is not the number that matters.

Audio Function Generator holds the better App Store score, 4.7 against 4.4. That said, the two scores are not equally well evidenced: Audio Function Generator has 2.2K ratings behind it against 169, 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 70% of Brainwaves Frequency Generator's.

Audio Function Generator ships an update every 6 weeks, Brainwaves Frequency Generator every 4 days. The most recent releases landed on September 24, 2026 and September 25, 2026 respectively.

## The numbers

| Metric | Audio Function Generator | Brainwaves Frequency Generator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (2.2K ratings)](https://appshunter.io/ios/app/audio-function-generator/id768229610/reviews)** | [4.4 (169 ratings)](https://appshunter.io/ios/app/brainwaves-frequency-generator/id6445854548/reviews) |
| Number of ratings | **2.2K** | 169 |
| Positive reviews | **77.1% of reviews** | 70.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Every 4 days** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 14 MB | 50 MB |
| Requires iOS | 15.5 | **14.0** |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, iPod, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Thomas Gruber](https://appshunter.io/developer/342699861) | [Brainwave Frequency, LLC](https://appshunter.io/developer/1674255468) |

## 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


### Brainwaves Frequency Generator

[App page](https://appshunter.io/ios/app/brainwaves-frequency-generator/id6445854548)

Enhance sleep quality and boost focus with scientifically-proven brainwave frequencies. Choose from a library of soothing sounds to induce relaxation or sharpen concentration for improved productivity and well-being.

**Highlights:** Binaural beats for sleep and focus, Diverse library of soothing frequencies, Delta, theta, alpha, and beta wave options, Customizable frequency controls, Enhances sleep quality, Boosts focus and productivity

**Features:** macOS Compatibility, Siri integration

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1 Month | $9.99 | per month |
| 1 Month | $9.99 | per month |
| Semester | $49.99 | per 6 months |
| Semester | $49.99 | per 6 months |
| Annual | $59.99 | per year |
| Annual | $59.99 | per year |
| Lifetime Access | $149.99 | one-time |

**What reviewers like**

- 👍 Effective for focus and productivity
- 👍 Improves sleep quality
- 👍 Helps calm racing thoughts
- 👍 User-friendly interface
- 👍 Customizable sessions

**What reviewers complain about**

- 😞 No way to cancel trial
- 😞 Sound causes headaches
- 😞 No instructions or info
- 😞 App doesn't help with sleep for some
- 😞 Poor sound quality

**Reported bugs**

- Review deleted by cat
- Cannot find cancellation information

**Requested features**

- Option to turn off haptic vibes
- Tutorial for the app
- Carry images or teach math during sleep


## Frequently asked questions

### Is Audio Function Generator free?

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

### Is Brainwaves Frequency Generator free?

Brainwaves Frequency Generator is free to download, with in-app purchases available.

### Which has better reviews, Audio Function Generator or Brainwaves Frequency Generator?

Audio Function Generator is rated higher. Audio Function Generator averages 4.7 out of 5 from 2.2K ratings, while Brainwaves Frequency Generator averages 4.4 from 169 ratings.

### Do Audio Function Generator or Brainwaves Frequency Generator have ads?

Neither Audio Function Generator nor Brainwaves Frequency Generator shows ads.

### Which is updated more often, Audio Function Generator or Brainwaves Frequency Generator?

Audio Function Generator ships an update every 6 weeks, and Brainwaves Frequency Generator every 4 days. Most recently, Audio Function Generator was updated on September 24, 2026 and Brainwaves Frequency Generator on September 25, 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.*