# uDisk vs U

The clearest difference is review sentiment: uDisk at 84% against U's 29%. uDisk also leads on rating (4.3 vs 2.3) and ratings volume (233 vs 17). U's advantage is in-app purchases (none vs 1). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. uDisk sells 1 one-off in-app purchase. U asks for nothing beyond the download.

uDisk holds the better App Store score, 4.3 against 2.3. That said, the two scores are not equally well evidenced: uDisk has 233 ratings behind it against 17, so its average is the more settled of the two. Written reviews point the same way: 84% of uDisk's written reviews are positive against 29% of U's.

uDisk ships an update every 2 months, U every 3 months. The most recent releases landed on September 17, 2026 and September 10, 2026 respectively.

## The numbers

| Metric | uDisk | U |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.3 (233 ratings)](https://appshunter.io/ios/app/udisk/id532963658/reviews)** | [2.3 (17 ratings)](https://appshunter.io/ios/app/u-disk/id1119397038/reviews) |
| Number of ratings | **233** | 17 |
| Positive reviews | **83.7% of reviews** | 29.4% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 3 months |
| Monetization | Free with in-app purchases | **Free** |
| Size | 20 MB | 52 MB |
| Requires iOS | **11.0** | 12.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Shenzhen Brown Bear Technology Co., LTD](https://appshunter.io/developer/480204138) | [岚 丁](https://appshunter.io/developer/1465584117) |

## What reviewers say

### uDisk

[App page](https://appshunter.io/ios/app/udisk/id532963658)

Transform your iOS device into a portable USB drive. Easily transfer files between your device and computer via Wi-Fi or iTunes. Browse, play, and edit various file types directly on your phone or tablet.

**Highlights:** Use iOS device as USB disk, Wi-Fi file transfer, iTunes File Sharing, Browse various file types, Play music and video, Edit text files, Create directories and sort files

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Version | $3.99 | one-time |

**What reviewers like**

- 👍 Easy to use
- 🚀 Fast transfer
- 👍 Good for organizing files
- 👍 Useful for freeing up phone space
- 👍 Versatile and durable

**What reviewers complain about**

- 🐛 Does not work for some users
- 🐛 App requires download to each device
- 🐛 Cannot rotate screen
- 🐛 Does not work as a standalone flash drive
- 🐛 Limited file transfer capability

**Reported bugs**

- Cannot save files manually
- Material does not always show
- Does not work after initial use
- Cannot rotate screen
- Does not transfer videos from phone

**Requested features**

- App should be pre-loaded on the thumbdrive
- More clarity on app functionality and safety


### U

[App page](https://appshunter.io/ios/app/u-disk/id1119397038)

Expand your iOS device's storage with this portable flash drive. Seamlessly transfer, view, and manage files between your iPhone/iPad and Mac/PC without needing Wi-Fi or a network signal. Features include file encryption and contact backup.

**Highlights:** Memory expansion for iOS devices, Two-way storage transfer (iOS to Mac/PC), No Wi-Fi or network signal required, Transfer, view, and share files, File encryption, Contacts backup and restore, Video streaming via Airplay

**In-app purchases:** none


## Frequently asked questions

### Is uDisk free?

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

### Is U free?

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

### Which has better reviews, uDisk or U?

uDisk is rated higher. uDisk averages 4.3 out of 5 from 233 ratings, while U averages 2.3 from 17 ratings.

### Do uDisk or U have ads?

Neither uDisk nor U shows ads.

### Which is updated more often, uDisk or U?

uDisk ships an update every 2 months, and U every 3 months. Most recently, uDisk was updated on September 17, 2026 and U on September 10, 2026.

---

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