# Audio Function Generator vs Sound Oscilloscope

The clearest difference is review sentiment: Audio Function Generator at 77% against Sound Oscilloscope's 33%. Audio Function Generator also leads on rating (4.7 vs 3.3) and ratings volume (2.2K vs 24). Sound Oscilloscope'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. Sound Oscilloscope asks for nothing beyond the download.

Audio Function Generator holds the better App Store score, 4.7 against 3.3. That said, the two scores are not equally well evidenced: Audio Function Generator has 2.2K ratings behind it against 24, 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 33% of Sound Oscilloscope's.

Audio Function Generator ships an update every 6 weeks, Sound Oscilloscope every 9 days. The most recent releases landed on October 13, 2026 and September 28, 2026 respectively.

## The numbers

| Metric | Audio Function Generator | Sound Oscilloscope |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (2.2K ratings)](https://appshunter.io/ios/app/audio-function-generator/id768229610/reviews)** | [3.3 (24 ratings)](https://appshunter.io/ios/app/sound-oscilloscope/id1442383439/reviews) |
| Number of ratings | **2.2K** | 24 |
| Positive reviews | **77.1% of reviews** | 33.3% 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 | 15 MB |
| Requires iOS | 15.5 | **12.1** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Thomas Gruber](https://appshunter.io/developer/342699861) | [Shinichi Takemura](https://appshunter.io/developer/1441889523) |

## 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


### Sound Oscilloscope

[App page](https://appshunter.io/ios/app/sound-oscilloscope/id1442383439)

Visualize sound waves and analyze their frequency spectrum. This utility displays the waveform of various sounds, from your voice to musical instruments, and reveals their overtone structure. Explore the sonic characteristics of your environment with this straightforward tool.

**Highlights:** Shows sound waveform, Shows sound spectrum, Shows sound power level, Sensitive algorithm, Works from 30 Hz to 4000 Hz

**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 Sound Oscilloscope free?

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

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

Audio Function Generator is rated higher. Audio Function Generator averages 4.7 out of 5 from 2.2K ratings, while Sound Oscilloscope averages 3.3 from 24 ratings.

### Do Audio Function Generator or Sound Oscilloscope have ads?

Neither Audio Function Generator nor Sound Oscilloscope shows ads.

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

Audio Function Generator ships an update every 6 weeks, and Sound Oscilloscope every 9 days. Most recently, Audio Function Generator was updated on October 13, 2026 and Sound Oscilloscope on September 28, 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.*