# USB Sharp vs Ruby Wireless Sensor

The clearest difference is rating: Ruby Wireless Sensor at 5.0 against USB Sharp's 3.1. Ruby Wireless Sensor also leads on in-app purchases (none vs 6) and ads (none vs shown). USB Sharp's advantage is ratings volume (18 vs 1). On price, update cadence, device support and iOS requirement there is nothing between them.

Both are free to download. USB Sharp sells 6 one-off in-app purchases. Ruby Wireless Sensor asks for nothing beyond the download.

Ruby Wireless Sensor holds the better App Store score, 5.0 against 3.1. That said, the two scores are not equally well evidenced: USB Sharp has 18 ratings behind it against 1, so its average is the more settled of the two.

Both ship on a similar rhythm, roughly every 3 weeks. The most recent releases landed on September 21, 2026 and June 11, 2026 respectively.

## The numbers

| Metric | USB Sharp | Ruby Wireless Sensor |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.1 (18 ratings)](https://appshunter.io/ios/app/usb-sharp/id427762463/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/ruby-wireless-sensor/id6473813823/reviews)** |
| Number of ratings | **18** | 1 |
| Positive reviews | 53.2% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 3 weeks | Every 3 weeks |
| Monetization | Free with in-app purchases | **Free** |
| Size | 55 MB | 76 MB |
| Requires iOS | **13.0** | 14.2 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [锦文 游](https://appshunter.io/developer/406832160) | [Crystal Instruments Corporation](https://appshunter.io/developer/496441607) |

## What reviewers say

### USB Sharp

[App page](https://appshunter.io/ios/app/usb-sharp/id427762463)

Transform your iPhone or iPad into a portable wireless storage disk for efficient file management. Upload multiple files via Chrome and Firefox, extract encrypted RAR archives, and organize documents, photos, and videos with ease.

**Highlights:** Portable wireless storage, File management, Multiple file upload, Encrypted archive extraction, Document reader, Photo viewer, Video player

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove ads | $0.99 | one-time |
| Music Player | $0.99 | one-time |
| Dropbox | $0.99 | one-time |
| Video Player | $0.99 | one-time |
| SkyDrive | $0.99 | one-time |
| Full Version | $2.99 | one-time |


### Ruby Wireless Sensor

[App page](https://appshunter.io/ios/app/ruby-wireless-sensor/id6473813823)

Connect to a compact wireless sensor to monitor mechanical structures. View real-time vibration data and manage the device via Bluetooth.

**Highlights:** Connect via Bluetooth, Manage wireless sensors, View real-time vibration data, Monitor mechanical structures, Ultracompact device integration

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is USB Sharp free?

USB Sharp is free to download, with in-app purchases available.

### Is Ruby Wireless Sensor free?

Ruby Wireless Sensor is free to download, with no in-app purchases.

### Which has better reviews, USB Sharp or Ruby Wireless Sensor?

Ruby Wireless Sensor is rated higher. USB Sharp averages 3.1 out of 5 from 18 ratings, while Ruby Wireless Sensor averages 5.0 from 1 ratings.

### Do USB Sharp or Ruby Wireless Sensor have ads?

USB Sharp shows ads; Ruby Wireless Sensor does not.

### Which is updated more often, USB Sharp or Ruby Wireless Sensor?

USB Sharp ships an update every 3 weeks, and Ruby Wireless Sensor every 3 weeks. Most recently, USB Sharp was updated on September 21, 2026 and Ruby Wireless Sensor on June 11, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*