# Audio Function Generator vs Size Stream Mobile Fit

The clearest difference is review sentiment: Audio Function Generator at 77% against Size Stream Mobile Fit's 25%. Audio Function Generator also leads on rating (4.7 vs 2.8) and update cadence (every 6 weeks vs every 13 months). Size Stream Mobile Fit's advantage is in-app purchases (none vs 1). On price, ads and iOS requirement there is nothing between them.

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

Audio Function Generator holds the better App Store score, 4.7 against 2.8. That said, the two scores are not equally well evidenced: Audio Function Generator has 2.2K ratings behind it against 5, 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 25% of Size Stream Mobile Fit's.

Audio Function Generator ships an update every 6 weeks, Size Stream Mobile Fit every 13 months. Both last shipped on October 13, 2026.

## The numbers

| Metric | Audio Function Generator | Size Stream Mobile Fit |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (2.2K ratings)](https://appshunter.io/ios/app/audio-function-generator/id768229610/reviews)** | [2.8 (5 ratings)](https://appshunter.io/ios/app/size-stream-mobile-fit/id1585425901/reviews) |
| Number of ratings | **2.2K** | 5 |
| Positive reviews | **77.1% of reviews** | 25.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 6 weeks** | Every 13 months |
| Monetization | Free with in-app purchases | **Free** |
| Size | 14 MB | 217 MB |
| Requires iOS | **15.5** | 16.6 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 17+ |
| Developer | [Thomas Gruber](https://appshunter.io/developer/342699861) | [Size Stream LLC](https://appshunter.io/developer/1008166455) |

## 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


### Size Stream Mobile Fit

[App page](https://appshunter.io/ios/app/size-stream-mobile-fit/id1585425901)

This app offers a convenient and secure way to measure employees and receive size recommendations remotely. It simplifies the process of outfitting an organization with a portable body scanning solution that integrates with a dedicated data portal.

**Highlights:** Remote employee scanning, Immediate size recommendations, Integrated sizing logic, Customizable branding, Secure on-device processing, Dedicated data portal access

**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 Size Stream Mobile Fit free?

Size Stream Mobile Fit is free to download, with no in-app purchases.

### Which has better reviews, Audio Function Generator or Size Stream Mobile Fit?

Audio Function Generator is rated higher. Audio Function Generator averages 4.7 out of 5 from 2.2K ratings, while Size Stream Mobile Fit averages 2.8 from 5 ratings.

### Do Audio Function Generator or Size Stream Mobile Fit have ads?

Neither Audio Function Generator nor Size Stream Mobile Fit shows ads.

### Which is updated more often, Audio Function Generator or Size Stream Mobile Fit?

Audio Function Generator ships an update every 6 weeks, and Size Stream Mobile Fit every 13 months. Most recently, Audio Function Generator was updated on October 13, 2026 and Size Stream Mobile Fit on October 13, 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.*