# uDisk vs iStick Ultra

The clearest difference is rating: iStick Ultra at 5.0 against uDisk's 4.3. iStick Ultra also leads on in-app purchases (none vs 1) and update cadence (every 3 weeks vs every 2 months). uDisk's advantage is ratings volume (248 vs 1) and iOS requirement (11.0 vs 15.0). On price, ads and device support there is nothing between them.

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

iStick Ultra holds the better App Store score, 5.0 against 4.3. That said, the two scores are not equally well evidenced: uDisk has 248 ratings behind it against 1, so its average is the more settled of the two.

uDisk ships an update every 2 months, iStick Ultra every 3 weeks. The most recent releases landed on November 6, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | uDisk | iStick Ultra |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.3 (248 ratings)](https://appshunter.io/ios/app/udisk/id532963658/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/istick-ultra/id6740008831/reviews)** |
| Number of ratings | **248** | 1 |
| Positive reviews | 83.8% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 3 weeks** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 20 MB | 230 MB |
| Requires iOS | **11.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Shenzhen Brown Bear Technology Co., LTD](https://appshunter.io/developer/480204138) | [Gopod Group Limited](https://appshunter.io/developer/975108489) |

## 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


### iStick Ultra

[App page](https://appshunter.io/ios/app/istick-ultra/id6740008831)

This utility app facilitates seamless data transfer and backup from your iDevice. It offers automatic app launching, one-touch photo library backup, and secure iCloud import. A read-only mode ensures data integrity and protection against unauthorized modifications.

**Highlights:** Automatic app launch on connection, One-touch photo library backup, Import and backup iCloud photos/videos, Read-only mode for data protection, Secure login for privacy, Access app-stored data

**In-app purchases:** none


## Frequently asked questions

### Is uDisk free?

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

### Is iStick Ultra free?

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

### Which has better reviews, uDisk or iStick Ultra?

iStick Ultra is rated higher. uDisk averages 4.3 out of 5 from 248 ratings, while iStick Ultra averages 5.0 from 1 ratings.

### Do uDisk or iStick Ultra have ads?

Neither uDisk nor iStick Ultra shows ads.

### Which is updated more often, uDisk or iStick Ultra?

uDisk ships an update every 2 months, and iStick Ultra every 3 weeks. Most recently, uDisk was updated on November 6, 2026 and iStick Ultra on October 30, 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.*