U vs BLANBOK+
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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
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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.
BLANBOK+
This app functions as a microSD card reader, enabling you to access and manage data on external storage. It allows for reading files, backing up your contacts, and copying pictures directly from your device.
- MicroSD card reader operation
- External storage access
- Read data from storage
- Backup contacts
- Copy pictures
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BLANBOK is an operated software of microSD card reader. Working with external storage, it can be used for reading data, backup contacts and copying pictures etc.
Screenshots
Verdict
U and BLANBOK+ both sit at 2.3 stars, but that hides the real split: 43% of BLANBOK+'s written reviews are positive against 29% of U's. BLANBOK+ also leads on ratings volume (158 vs 17) and update cadence (every 6 weeks vs every 3 months). On price, rating, ads and in-app purchases 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.
U holds the better App Store score, 2.3 against 2.1. That said, the two scores are not equally well evidenced: BLANBOK+ has 158 ratings behind it against 17, so its average is the more settled of the two. Written reviews complicate that: 29% of U's written reviews are positive against 43% of BLANBOK+'s, so the app with the better star average is not the one people write more warmly about.
U ships an update every 3 months, BLANBOK+ every 6 weeks. The most recent releases landed on September 10, 2026 and September 20, 2026 respectively.
| Parameter | U | BLANBOK+ |
|---|---|---|
| Price | Free | Free |
| Rating | 2.3 (17 ratings) — better | 2.1 (158 ratings) |
| Positive reviews | 29.4% of reviews | 43.1% of reviews — better |
| Number of ratings | 17 | 158 — better |
| Update frequency | Every 3 months | Every 6 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 12.1 | 12.1 |
| Further details — not scored | ||
| Size | 52 MB | 28 MB |
| Age rating | 4+ | 4+ |
| Developer | 岚 丁 | Shenzhen H.D. Technology Co., Ltd. |
Customer experience
U
BLANBOK+
Bugs and requests
U
Not enough reviews yet to summarise bugs or requests.
BLANBOK+
Reported bugs
4 issues- Error codes when transferring files
- Device not recognized by iPhone/iPad
- Corrupted or missing transferred files
- Outdated app version not supporting newer codecs
Requested features
4 requests- Add thumbnail previews for videos
- Display video file length information
- Option to disable auto-resume video playback
- Improve cross-platform compatibility
In-app purchases
U
No in-app purchases
BLANBOK+
No in-app purchases
