# USB Sharp vs SL Udisk

The clearest difference is review sentiment: USB Sharp at 63% against SL Udisk's 0%. USB Sharp also leads on ratings volume (18 vs 2). SL Udisk's advantage is rating (4.0 vs 3.1) and in-app purchases (none vs 6). On price, update cadence and device support there is nothing between them.

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

SL Udisk holds the better App Store score, 4.0 against 3.1. That said, the two scores are not equally well evidenced: USB Sharp has 18 ratings behind it against 2, so its average is the more settled of the two. Written reviews complicate that: 63% of USB Sharp's written reviews are positive against 0% of SL Udisk's, so the app with the better star average is not the one people write more warmly about.

USB Sharp ships an update every 3 weeks, SL Udisk every 6 weeks. The most recent releases landed on October 17, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | USB Sharp | SL Udisk |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.1 (18 ratings)](https://appshunter.io/ios/app/usb-sharp/id427762463/reviews) | **[4.0 (2 ratings)](https://appshunter.io/ios/app/sl-udisk/id1137419219/reviews)** |
| Number of ratings | **18** | 2 |
| Positive reviews | **62.9% of reviews** | 0.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Every 3 weeks** | Every 6 weeks |
| Monetization | Free with in-app purchases | **Free** |
| Size | 55 MB | 25 MB |
| Requires iOS | 13.0 | **8.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [锦文 游](https://appshunter.io/developer/406832160) | [Shenzhen Shiling Digital Technology.co., Ltd](https://appshunter.io/developer/1137419218) |

## 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 |


### SL Udisk

[App page](https://appshunter.io/ios/app/sl-udisk/id1137419219)

Expand your iOS device's storage with this portable flash drive. Seamlessly transfer, view, and manage files between your iOS devices and computers without needing Wi-Fi or a network signal. It offers file encryption and contact backup for added security and convenience.

**Highlights:** Two-way storage between iOS and MAC/PC, No Wi-Fi or network signal required, Seamless file transfer, viewing, and sharing, Organize, edit, and manage files, Play music and videos directly from the drive, File encryption, Contacts backup and restore

**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 SL Udisk free?

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

### Which has better reviews, USB Sharp or SL Udisk?

SL Udisk is rated higher. USB Sharp averages 3.1 out of 5 from 18 ratings, while SL Udisk averages 4.0 from 2 ratings.

### Do USB Sharp or SL Udisk have ads?

USB Sharp shows ads; SL Udisk does not.

### Which is updated more often, USB Sharp or SL Udisk?

USB Sharp ships an update every 3 weeks, and SL Udisk every 6 weeks. Most recently, USB Sharp was updated on October 17, 2026 and SL Udisk on October 9, 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.*