# SL Udisk vs I

The clearest difference is review sentiment: I at 50% against SL Udisk's 0%. I also leads on rating (5.0 vs 4.0) and update cadence (every 9 days vs every 6 weeks). On price, ratings volume, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

I holds the better App Store score, 5.0 against 4.0. Both are backed by a comparable volume of ratings — 2 and 5 respectively. Written reviews point the same way: 0% of SL Udisk's written reviews are positive against 50% of I's.

SL Udisk ships an update every 6 weeks, I every 9 days. Both last shipped on November 2, 2026.

## The numbers

| Metric | SL Udisk | I |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.0 (2 ratings)](https://appshunter.io/ios/app/sl-udisk/id1137419219/reviews) | **[5.0 (5 ratings)](https://appshunter.io/ios/app/i-usbkey-pro/id1258469579/reviews)** |
| Number of ratings | 2 | **5** |
| Positive reviews | 0.0% of reviews | **50.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Every 9 days** |
| Monetization | Free | Free |
| Size | 25 MB | 40 MB |
| Requires iOS | 8.0 | 8.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Shenzhen Shiling Digital Technology.co., Ltd](https://appshunter.io/developer/1137419218) | [zhong qibiao](https://appshunter.io/developer/1118837284) |

## 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


### I

[App page](https://appshunter.io/ios/app/i-usbkey-pro/id1258469579)

Manage all your files on iOS devices with ease. This app allows you to exchange files between different devices and platforms, back up contacts and camera roll, and play media directly from your device. It supports a wide range of document, image, audio, and video file formats.

**Highlights:** File management for iOS devices, Cross-device file exchange, Contact and camera roll backup, Video and music playback, Image and document preview, Support for various file formats

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is SL Udisk free?

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

### Is I free?

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

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

I is rated higher. SL Udisk averages 4.0 out of 5 from 2 ratings, while I averages 5.0 from 5 ratings.

### Do SL Udisk or I have ads?

Neither SL Udisk nor I shows ads.

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

SL Udisk ships an update every 6 weeks, and I every 9 days. Most recently, SL Udisk was updated on November 2, 2026 and I on November 2, 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.*