# SL Udisk vs U8

SL Udisk and U8 both sit at 4.0 stars, but that hides the real split: 64% of U8's written reviews are positive against 0% of SL Udisk's. U8 also leads on ratings volume (10 vs 2). SL Udisk's advantage is in-app purchases (none vs 1) and ads (none vs shown). On price, rating, update cadence and device support there is nothing between them.

Both are free to download. U8 sells 1 one-off in-app purchase. SL Udisk asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 4.0 for SL Udisk against 4.1 for U8. That said, the two scores are not equally well evidenced: U8 has 10 ratings behind it against 2, so its average is the more settled of the two. Written reviews are what separate them: 0% of SL Udisk's written reviews are positive against 64% of U8's.

Both ship on a similar rhythm, roughly every 6 weeks. The most recent releases landed on September 22, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | SL Udisk | U8 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.0 (2 ratings)](https://appshunter.io/ios/app/sl-udisk/id1137419219/reviews) | **[4.1 (10 ratings)](https://appshunter.io/ios/app/u8-disk/id1554732742/reviews)** |
| Number of ratings | 2 | **10** |
| Positive reviews | 0.0% of reviews | **64.3% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 6 weeks | Every 6 weeks |
| Monetization | **Free** | Free with in-app purchases |
| Size | 25 MB | 26 MB |
| Requires iOS | **8.0** | 12.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Shenzhen Shiling Digital Technology.co., Ltd](https://appshunter.io/developer/1137419218) | [ErxiangHeyi Information](https://appshunter.io/developer/1735695526) |

## What reviewers say

### 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


### U8

[App page](https://appshunter.io/ios/app/u8-disk/id1554732742)

Transfer and back up any file wirelessly between your mobile devices and computers without using mobile data. Experience ultra-fast speeds for seamless file management and sharing across different platforms.

**Highlights:** Zero-flow wireless file transfer, Ultra-fast transmission speeds (up to 30MB/s), File backup and management, Cross-platform compatibility, Supports various file formats

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| LifeTime | $3.99 | one-time |


## Frequently asked questions

### Is SL Udisk free?

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

### Is U8 free?

U8 is free to download, with in-app purchases available.

### Which has better reviews, SL Udisk or U8?

U8 is rated higher. SL Udisk averages 4.0 out of 5 from 2 ratings, while U8 averages 4.1 from 10 ratings.

### Do SL Udisk or U8 have ads?

U8 shows ads; SL Udisk does not.

### Which is updated more often, SL Udisk or U8?

SL Udisk ships an update every 6 weeks, and U8 every 6 weeks. Most recently, SL Udisk was updated on September 22, 2026 and U8 on October 10, 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.*