uDisk vs DUO
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
uDisk
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.
- 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
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Let your iOS device become a USB disk ! You can use it to transfer files between iOS device and computer by Wifi or iTunes File Sharing. The uDisk support various files browse, music and video play, and text file editing. Tap the toolbar buttons you can view the wifi address, create a directory, sort the files, and change the view mode. Long press the file item, you can move, rename, email and delete the file. Enjoy it ! If any question and suggestion, please contact czh0766@163.com.
DUO
Expand storage for your Apple devices and computers. Easily transfer files, back up contacts, and play media directly from the device. Free up space on your iPhone and iPad with this versatile storage solution.
- Expand iPhone/iPad storage
- USB and Lightning connectors
- Contact backup and restore
- Independent music/video playback
- Stream 1080p videos
- File management
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DUO-LINK/DUO-LINK R is a multi-functional storage device for Mac, PC, iPad, iPhone, and iPod touch. Duo-Link has a standard USB interface and a lightning connector for iPhone and iPad. Free up space on your iPhone and iPad. Transfer and share files between your iPhone, iPad & Mac or PC quickly and easily. DUO-LINK Functions： ● Contact list backup and restore. ● Supports independent music and video playback. ● Stream 1080p videos directly from Duo-Link ● File management operations such as copy, delete, export etc. ● Browse files store on DUO-LINK Drive. ● Browse local files stored within Duo-Link App. ● Transfer media and files from iPhone to Duo-Link Drive. Compatibility： ● iPad, iPhone, iPod Touch with lightning connector running iOS version 8.0 or later. ● PCs running Windows XP, Windows 7, and Windows 8. ● Mac computers running Mac OS 10.5 or later.
Screenshots
Verdict
The clearest difference is review sentiment: uDisk at 84% against DUO's 13%. uDisk also leads on rating (4.3 vs 1.9) and ratings volume (233 vs 52). DUO's advantage is in-app purchases (none vs 1) and iOS requirement (8.0 vs 11.0). On price, update cadence, ads and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. uDisk sells 1 one-off in-app purchase. DUO asks for nothing beyond the download.
uDisk holds the better App Store score, 4.3 against 1.9. Both are backed by a comparable volume of ratings — 233 and 52 respectively. Written reviews point the same way: 84% of uDisk's written reviews are positive against 13% of DUO's.
uDisk ships an update every 2 months, DUO every 5 weeks. The most recent releases landed on October 13, 2026 and October 15, 2026 respectively.
| Parameter | uDisk | DUO |
|---|---|---|
| Price | Free | Free |
| Rating | 4.3 (233 ratings) — better | 1.9 (52 ratings) |
| Positive reviews | 83.7% of reviews — better | 12.7% of reviews |
| Number of ratings | 233 — better | 52 |
| Update frequency | Every 2 months | Every 5 weeks — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 11.0 | 8.0 — better |
| Further details — not scored | ||
| Size | 20 MB | 31 MB |
| Age rating | 4+ | 4+ |
| Developer | Shenzhen Brown Bear Technology Co., LTD | Gopod Group Limited |
Customer experience
uDisk
DUO
Bugs and requests
uDisk
Reported bugs
6 issues- Cannot save files manually
- Material does not always show
- Does not work after initial use
- Cannot rotate screen
- Does not transfer videos from phone
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- No permissions requested for file access
Requested features
2 requests- App should be pre-loaded on the thumbdrive
- More clarity on app functionality and safety
DUO
Not enough reviews yet to summarise bugs or requests.
In-app purchases
uDisk
- Pro Version$3.99
DUO
No in-app purchases
