# uDisk vs Cmiot HDD

The clearest difference is rating: Cmiot HDD at 5.0 against uDisk's 4.3. Cmiot HDD also leads on in-app purchases (none vs 1) and iOS requirement (8.0 vs 11.0). uDisk's advantage is ratings volume (233 vs 1) and update cadence (every 2 months vs every 4 months). On price, ads and device support there is nothing between them.

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

Cmiot HDD holds the better App Store score, 5.0 against 4.3. That said, the two scores are not equally well evidenced: uDisk has 233 ratings behind it against 1, so its average is the more settled of the two.

uDisk ships an update every 2 months, Cmiot HDD every 4 months. The most recent releases landed on October 13, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | uDisk | Cmiot HDD |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.3 (233 ratings)](https://appshunter.io/ios/app/udisk/id532963658/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/cmiot-hdd/id1447455796/reviews)** |
| Number of ratings | **233** | 1 |
| Positive reviews | 83.7% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 4 months |
| Monetization | Free with in-app purchases | **Free** |
| Size | 20 MB | 66 MB |
| Requires iOS | 11.0 | **8.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Shenzhen Brown Bear Technology Co., LTD](https://appshunter.io/developer/480204138) | [显祖 张](https://appshunter.io/developer/627876616) |

## 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


### Cmiot HDD

[App page](https://appshunter.io/ios/app/cmiot-hdd/id1447455796)

Access, download, and manage files like movies, photos, and documents from smart storage devices. Stream videos, transfer files to free up mobile space, and automatically back up your media and contacts. Secure your data with an encrypted space and keep your device updated with OTA firmware upgrades.

**Highlights:** Access files on smart storage, Download files locally, Online video playback, File transfer and upload, Automatic backup, Encrypted data space, OTA firmware upgrade

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is uDisk free?

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

### Is Cmiot HDD free?

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

### Which has better reviews, uDisk or Cmiot HDD?

Cmiot HDD is rated higher. uDisk averages 4.3 out of 5 from 233 ratings, while Cmiot HDD averages 5.0 from 1 ratings.

### Do uDisk or Cmiot HDD have ads?

Neither uDisk nor Cmiot HDD shows ads.

### Which is updated more often, uDisk or Cmiot HDD?

uDisk ships an update every 2 months, and Cmiot HDD every 4 months. Most recently, uDisk was updated on October 13, 2026 and Cmiot HDD on October 6, 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.*