U vs JD Memory
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.
JD Memory
Manage files and media stored on your Apple USB Drive directly from your device. Browse photos, videos, and music with thumbnail previews, organize documents, and share content easily. Enjoy slideshows for photos and advanced playback options for music.
- Media thumbnail display
- List/thumbnail view
- File sharing
- File operations (copy, cut, delete, create, rename)
- Local/iStorage data transmission
- Photo slideshow
- Music playback with artwork and repeat modes
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“JD Memory” is an application software for Apple USB Drive. •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/iStorage data transmission . • 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 rating: JD Memory at 2.7 against U's 2.3. JD Memory also leads on iOS requirement (9.0 vs 12.1). U's advantage is review sentiment (29% vs 18%). On price, ratings volume, 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.
JD Memory holds the better App Store score, 2.7 against 2.3. Both are backed by a comparable volume of ratings — 17 and 32 respectively. Written reviews complicate that: 29% of U's written reviews are positive against 18% of JD Memory's, so the app with the better star average is not the one people write more warmly about.
Both ship on a similar rhythm, roughly every 3 months. The most recent releases landed on October 8, 2026 and October 9, 2026 respectively.
| Parameter | U | JD Memory |
|---|---|---|
| Price | Free | Free |
| Rating | 2.3 (17 ratings) | 2.7 (32 ratings) — better |
| Positive reviews | 29.4% of reviews — better | 17.9% of reviews |
| Number of ratings | 17 | 32 — better |
| 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 | 12.1 | 9.0 — better |
| Further details — not scored | ||
| Size | 52 MB | 107 MB |
| Age rating | 4+ | 4+ |
| Developer | 岚 丁 | 晓明 徐 |
Customer experience
U
JD Memory
In-app purchases
U
No in-app purchases
JD Memory
No in-app purchases
