uDisk vs i4Flash
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.
i4Flash
Manage your media files with ease. This app allows you to view, organize, and share photos, music, and documents. It supports various file operations and playback features for a comprehensive media experience.
- Media thumbnail display (video, photo, music)
- List/thumbnail view with sharing
- File operations: copy, cut, delete, create, rename
- Local/storage data transmission
- Photo slideshow mode
- Music playback with artwork and repeat modes
- Document support for various formats
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•The main interface displays Media thumbnails :video, photo, music • Supports list / thumbnail view, support sharing operation for photos, music and documents • Support copy/cut/delete/create/rename operation and support local/Storage data transmission in /between • Support to play the photos by slideshow mode • Support music artwork shows, repeat mode setting, time line drag operation • Document: Support formats of .keynote、.numbers、.page、.xls/.xlsx, .doc/docx、pdf、txt、ppt/pptx
Screenshots
Verdict
The clearest difference is review sentiment: uDisk at 84% against i4Flash's 5%. uDisk also leads on rating (4.3 vs 1.4) and ratings volume (233 vs 12). i4Flash's advantage is in-app purchases (none vs 1) and update cadence (every 2 weeks vs every 2 months). On price, 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. i4Flash asks for nothing beyond the download.
uDisk holds the better App Store score, 4.3 against 1.4. That said, the two scores are not equally well evidenced: uDisk has 233 ratings behind it against 12, 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 5% of i4Flash's.
uDisk ships an update every 2 months, i4Flash every 2 weeks. The most recent releases landed on September 25, 2026 and September 13, 2026 respectively.
| Parameter | uDisk | i4Flash |
|---|---|---|
| Price | Free | Free |
| Rating | 4.3 (233 ratings) — better | 1.4 (12 ratings) |
| Positive reviews | 83.7% of reviews — better | 4.5% of reviews |
| Number of ratings | 233 — better | 12 |
| Update frequency | Every 2 months | Every 2 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 | 9.0 — better |
| Further details — not scored | ||
| Size | 20 MB | 145 MB |
| Age rating | 4+ | 4+ |
| Developer | Shenzhen Brown Bear Technology Co., LTD | 汉福 陈 |
Customer experience
uDisk
i4Flash
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
i4Flash
Not enough reviews yet to summarise bugs or requests.
In-app purchases
uDisk
- Pro Version$3.99
i4Flash
No in-app purchases
