# Audio Function Generator vs Sweep

The clearest difference is review sentiment: Audio Function Generator at 77% against Sweep's 0%. Audio Function Generator also leads on rating (4.7 vs 4.0) and ratings volume (2.2K vs 2). Sweep's advantage is in-app purchases (none vs 1) and update cadence (every 9 days vs every 6 weeks). On price, ads and device support there is nothing between them.

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

Audio Function Generator holds the better App Store score, 4.7 against 4.0. 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. Written reviews point the same way: 77% of Audio Function Generator's written reviews are positive against 0% of Sweep's.

Audio Function Generator ships an update every 6 weeks, Sweep every 9 days. The most recent releases landed on October 13, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | Audio Function Generator | Sweep |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (2.2K ratings)](https://appshunter.io/ios/app/audio-function-generator/id768229610/reviews)** | [4.0 (2 ratings)](https://appshunter.io/ios/app/sweep-speaker-tuning/id6784438195/reviews) |
| Number of ratings | **2.2K** | 2 |
| Positive reviews | **77.1% of reviews** | 0.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Every 9 days** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 14 MB | 3 MB |
| Requires iOS | **15.5** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Thomas Gruber](https://appshunter.io/developer/342699861) | [Carl Sieber](https://appshunter.io/developer/6777791133) |

## 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


### Sweep

[App page](https://appshunter.io/ios/app/sweep-speaker-tuning/id6784438195)

Analyze your speaker's frequency response directly from your listening position. This app plays a log sweep and captures the sound with your iPhone's mic or a calibrated external mic, then displays the results. Easily compare multiple measurements to fine-tune your audio setup.

**Highlights:** Log sweep playback (20 Hz–20 kHz), Frequency response plotting, Overlay up to 5 measurement runs, Frequency scrubbing with peak/trough snapping, Adjustable real-time smoothing, Built-in test tone and live meter, Export capture charts as images

**Features:** macOS Compatibility

**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 Sweep free?

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

### Which has better reviews, Audio Function Generator or Sweep?

Audio Function Generator is rated higher. Audio Function Generator averages 4.7 out of 5 from 2.2K ratings, while Sweep averages 4.0 from 2 ratings.

### Do Audio Function Generator or Sweep have ads?

Neither Audio Function Generator nor Sweep shows ads.

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

Audio Function Generator ships an update every 6 weeks, and Sweep every 9 days. Most recently, Audio Function Generator was updated on October 13, 2026 and Sweep on October 11, 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.*