# DUO vs Usb Transfer

The clearest difference is in-app purchases: DUO at none against Usb Transfer's 3. DUO also leads on iOS requirement (8.0 vs 13.0). Usb Transfer's advantage is update cadence (every 3 weeks vs every 3 months). On price, ads and device support there is nothing between them.

Both are free to download. Usb Transfer sells 3 in-app purchases, starting at $2.99 per month. DUO asks for nothing beyond the download.

DUO ships an update every 3 months, Usb Transfer every 3 weeks. The most recent releases landed on October 21, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | DUO | Usb Transfer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.5 (86 ratings)](https://appshunter.io/ios/app/duo-link-30/id1088185359/reviews)** | — |
| Number of ratings | **86** | — |
| Positive reviews | 17.5% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 3 weeks** |
| Monetization | Free | — |
| Size | 34 MB | 89 MB |
| Requires iOS | **8.0** | 13.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Gopod Group Limited](https://appshunter.io/developer/975108489) | [Changsha Fugui Bamboo Network Technology Co., Ltd.](https://appshunter.io/developer/1458061020) |

## What reviewers say

### DUO

[App page](https://appshunter.io/ios/app/duo-link-30/id1088185359)

This multi-functional storage device offers a dual connector for seamless file transfer and management between Apple devices and computers. It allows for backing up contacts, streaming high-definition videos, and managing files directly from the device.

**Highlights:** Dual USB and Lightning connectors, Contact backup and restore, Independent music and video playback, 1080p video streaming, File management (copy, delete, export), Browse external and local files

**Features:** macOS Compatibility

**In-app purchases:** none

**What reviewers like**

- ✅ Easy file transfer between devices
- 📱 Works with multiple iOS devices
- 🎵 Can store and play media files
- 💾 Provides additional storage capacity
- 🔄 Simple backup functionality for photos/videos

**What reviewers complain about**

- 🐛 Frequent app crashes and freezes
- ❌ Incompatible with newer iPhone models
- 📉 Poor app stability after updates
- 🔌 Hardware not recognized by app
- 💥 Data loss issues reported

**Reported bugs**

- App crashes when playing MP3 files
- App crashes when transferring large files
- App crashes when viewing videos
- App crashes when adjusting volume during video playback
- App crashes when copying photos

**Requested features**

- Video thumbnail preview functionality
- File sharing with other applications
- Password/file locking capability
- Ability to select multiple files in view mode
- Wireless streaming to Apple TV


### Usb Transfer

[App page](https://appshunter.io/ios/app/usb-transfer/id6504265361)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 月会员 | $2.99 | per month |
| 季会员 | $3.99 | per 3 months |
| 年会员 | $9.99 | per year |


## Frequently asked questions

### Is DUO free?

DUO is free to download, with no in-app purchases.

### Is Usb Transfer free?

Usb Transfer is free to download, with in-app purchases available.

### Do DUO or Usb Transfer have ads?

Neither DUO nor Usb Transfer shows ads.

### Which is updated more often, DUO or Usb Transfer?

DUO ships an update every 3 months, and Usb Transfer every 3 weeks. Most recently, DUO was updated on October 21, 2026 and Usb Transfer on October 24, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*