i vs U
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
i
Easily manage all your files on iOS devices. Transfer documents, photos, music, and videos between different devices and platforms. Offers backup for contacts and camera roll, and supports a wide range of file formats.
- File management for iOS
- Cross-platform file exchange
- Backup contacts and camera roll
- Play videos and music
- Preview images
- Supports wide file formats
Read full descriptionHide full description
The i-FlashDevice is the best way to manage all your files on iOS devices,Exchanges files with different devices & platforms with ease. 1.Backup Contacts and Camera Roll. 2.Play Videos,Musics. 3.Preview Images,World. Supported File Formats: Document:DOC,XLS,PPT,TXT,else; Image:JPG,JPEG,BMP,GIF,else; Audio:MP3,AAC,AIF,else; Video:MP4,MOV,MKV,AVI,FLV,RMVB,ELSE;
U
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.
- 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
Read full descriptionHide full description
The U-Disk is the ultimate solution for memory expansion on iOS device. It's provides two-way storage between iOS and MAC/PC without Wi-Fi, network signal or battery power. Compatible with virtually all devices featuring a Lightning connector, this ultra-slim and fast flash drive enables users to seamlessly transfer, view and share documents, images, video and audio files between a multitude of gadgets. Organize, edit and manage files across multiple platforms, including iPad, iPhone and more. Play music and videos directly from the freeing up space on your devices. Other features include file encryption, contacts backup-restore, and video streaming via Airplay, Whether traveling by airplane for a business trip, stuck in a remote location without reception, or wanting to share photos and videos of a recent vacation, U-Disk fits perfectly into any lifestyle.
Screenshots
Verdict
The clearest difference is ratings volume: i at 789 against U's 17. i also leads on iOS requirement (8.0 vs 12.1). U's advantage is review sentiment (29% vs 15%). On price, rating, update cadence and ads 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. Neither carries in-app purchases, so what you see is what you pay.
On the App Store both sit at effectively the same score — 2.3 for i against 2.3 for U. That said, the two scores are not equally well evidenced: i has 789 ratings behind it against 17, so its average is the more settled of the two. Written reviews are what separate them: 15% of i's written reviews are positive against 29% of U's.
Both ship on a similar rhythm, roughly every 3 months. Both last shipped on October 8, 2026.
| Parameter | i | U |
|---|---|---|
| Price | Free | Free |
| Rating | 2.3 (789 ratings) | 2.3 (17 ratings) — better |
| Positive reviews | 15.0% of reviews | 29.4% of reviews — better |
| Number of ratings | 789 — better | 17 |
| Update frequency | Every 3 months | Every 3 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 8.0 — better | 12.1 |
| Further details — not scored | ||
| Size | 89 MB | 52 MB |
| Age rating | 4+ | 4+ |
| Developer | ShenZhen 0101 technology Co.,Ltd | 岚 丁 |
Customer experience
i
U
Bugs and requests
i
Reported bugs
4 issues- App crashes on launch
- Unable to connect to device
- Corrupted files after transfer
- Inconsistent behavior when viewing media
Requested features
4 requests- Add support for more file types
- Improve video playback functionality
- Provide better instructions and troubleshooting
- Optimize app for latest iOS versions
U
Not enough reviews yet to summarise bugs or requests.
In-app purchases
i
No in-app purchases
U
No in-app purchases
