# DUO-LINK 3.0

> Dual-connector external storage for Apple devices and PCs. (iPhone/iPad app by Gopod Group Limited.)

- Source: https://appshunter.io/ios/app/duo-link-30/id1088185359 (this page in markdown: same URL + `.md`)
- Developer: [Gopod Group Limited](https://appshunter.io/developer/975108489)
- Category: Utilities, Business
- Price: Free
- Rating: 2.50/5 from 86 App Store ratings · 97 written reviews indexed
- Age rating: 4+
- Requires: iOS 8.0 · 34 MB
- Languages: American English, French (France), German (Germany), Italian, Japanese, Korean, Polish, Brazilian Portuguese, Russian, Chinese (Simplified, China) and 2 more
- Released: 2016-03-04
- Data updated: 2026-06-10
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/duo-link-30/id1088185359/reviews.md

## What is DUO?

DUO-LINK 3 is a multi-functional storage device for Mac, PC, iPad, iPhone, and iPod touch.
DUO-LINK 3 has a standard USB interface and a lightning connector for iPhone and iPad. Free up space on your iPhone and iPad. Transfer and share files between your iPhone, iPad & Mac or PC quickly and easily. 

DUO-LINK 3 Functions：
●	  Contact list backup and restore.
●	  Supports independent music and video playback. 
●	  Stream 1080p videos directly from DUO-LINK 3.
●	  File management operations such as copy, delete, export etc. 
●	  Browse files store on DUO-LINK 3 Drive.
●	  Browse local files stored within DUO-LINK 3 App.
●	  Transfer media and files from iPhone to DUO-LINK 3 Drive.

Compatibility：
●	  IOS 9 and older versions. Compatible with : iPhone 6 Plus, iPad 4th Generation and older devices.
●	  PCs running Windows XP, Windows 7, and Windows 8. 
●	  Mac computers running Mac OS 10.5 or later.

## Key features

- 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

## What do users think of DUO?

Overall sentiment: negative

**Pros**

- ✅ 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
- ⚡ Fast data transfer speeds
- 👍 User-friendly interface (when working)

**Cons**

- 🐛 Frequent app crashes and freezes
- ❌ Incompatible with newer iPhone models
- 📉 Poor app stability after updates
- 🔌 Hardware not recognized by app
- 💥 Data loss issues reported
- 🚫 Cannot share files with other apps
- 🔐 Missing file locking/password protection
- ⚠️ Dark mode functionality broken
- 📁 Cannot access all files on device
- 🎵 Audio file playback crashes
- 📦 App bloats to 1-2GB after use
- 🖼️ Photo backup limited to recent images
- ⏱️ Slow performance with large files
- 🔗 Poor iOS 11+ compatibility
- 😤 Unresponsive customer support

**Commonly 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
- App crashes after 15-20 seconds of use
- Cannot recognize iPhone 8, iPhone X, iPhone 14, iPhone 16 Pro
- Hardware not detected despite proper connection
- Files show as transferred but remain on device
- Duplicate file errors during transfer
- File names corrupted with special characters
- Cannot delete files after transfer
- App closes when opening audio files
- Cannot access audio files after update
- App bloats to 1-2GB after initial use
- Incompatible with iOS 11 and later versions
- LED light not activating on connection
- Chinese language files appearing unexpectedly
- Cannot read flash drive after disconnect/reconnect
- File transfer progress not completing despite appearing to work
- Photos not visible in app despite being on device

**Most 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
- Root folder naming per device
- Ability to rename files on iPhone
- Create folders and organize files
- App storage on external drive
- Better PDF reader for stored files
- Fast forward/rewind for audio/video
- Playback resume from last location
- Bookmark functionality for media
- Live photo support
- Document transfer capability

## Recent user reviews (10 of 97)

All indexed reviews: https://appshunter.io/ios/app/duo-link-30/id1088185359/reviews.md

### 2/5 — Partially work

*2025-08-05, version 1.7.1*

I was getting ready to send it back and decided to try once more.I do see some of the photos and videos that it transferred. But they also still showing on my iPad mini. I don’t understand that. The app itself doesn’t work with the usb flash. It doesn’t work at all with my iPhone 16 pro. I’m still trying to work with it because of some transfers. Overall I’m not satisfied with it. A 1TB flash.

### 3/5 — The app was amazing before.

*2024-09-28, version 1.7.1*

The application has several issues with the advanced updates. First, there is a bug in the dark mode. Second, there is an inability to share files with other applications. Third, and most importantly, the file locking tool with a password has disappeared.

I hope the issues are fixed so we can use your company's tools.
التطبيق فيه عدة مشكلات في التحديثات المتقدمة منها اولا هناك خلل في الوضع الداكن ثانيا عدم القدرة على مشاركة الملفات مع التطبيقات الاخرة ثالثا وهو الاهم اختفاء اداة قفل الملفات بكلمة سر 

ارجو اصلاح المشكلات لكي نستخدم ادوات شركتكم .

### 1/5 — Very limited & poorly presented

*2023-06-07*

App can’t even handle files a few hundred MB large? What is this? The late 90’s ?? Good thing I only tried the app and didn’t buy their product. It can only open large files, but nothing else.

### 2/5 — Crashes

*2023-06-02, version 1.7.1*

When I got the new iPhone 14, this app crashes. Now I can’t back up my phone. Is there an issue with new iPhone and this?

### 1/5 — Why don’t this work anymore?

*2022-08-29, version 1.7.1*

I’ve got my flash drive for iOS and it is still able to be loaded on a PC but the app is dead weight on my phone and has been for a year or two. I hate to lose any data that I’m not able to offload on the drive….

### 1/5 — Can’t update.

*2021-12-10, version 1.7.1*

Something about a previous purchase. Won’t accept my information. I have several gigabytes of personal information that I have no access to now.

### 2/5 — It's kinda crap, but it sorta works

*2021-10-28, version 1.7.1*

Ya'll all get the last app upgrade? Crash on ya now?  Yeah....

Is it that hard to make this simple lack luster app work?

Update: now maybe months to a year later I can only say this app works worse then ever

### 5/5 — I love it!

*2021-02-02, version 1.7.0*

I bought the DuoLink 3.0 a few years back, and I have used it everyday. Unfortunately, mine was lost a few months back. I wish I could find a replacement drive, but they are no longer for sale

### 5/5 — thank you for fixing the bug of not being able to access the audio files

*2020-12-04, version 1.7.0*

12/4/2020 
thank you

7/5/2020
aftre the update, I can not open any of the audio files, either mp3 , wma, or m4a files, either on the internal or external storage, using my iphone x or ipad pro.

after clicking the selected audio file, it went back to iphone or ipad homescreen directly without playing it.

all the other video mp4 files, and pdf files work normal as before.

### 2/5 — Bug? Mise à jour?...

*2020-11-05*

Très satisfaite au début de cette clé! Permet de faire des transferts entre pc et téléphone facilement et/ou d’avoir un espace de stockage supplémentaire. Très pratique pour les sauvegardes de contact aussi!

Mais aujourd’hui, impossible!.....
Je m’aperçois qu’il n’y a plus de mise à jour depuis un petit moment... 
Un abandon du développeur ?..
Cette clé devient peu à peu inutile pour le téléphone... elle devient une clé usb basique...
Démarche volontaire pour pousser à la consommation? Ou inattention du développeur ? Peut-on espérer une réaction pour corriger les bugs constatés?...

## Frequently asked questions about DUO

### What does the DUO-LINK 3.0 app do?

The DUO-LINK 3.0 app facilitates file management and transfer for the DUO-LINK 3.0 storage device. It allows you to back up contacts, play music and videos, stream 1080p content, and manage files between your iPhone/iPad and Mac/PC.

### What are the key features of DUO-LINK 3.0?

Key features include a dual USB and Lightning connector for broad compatibility, contact list backup and restore, independent music and video playback, 1080p video streaming directly from the drive, and comprehensive file management operations.

### Is DUO-LINK 3.0 free to use?

The DUO-LINK 3.0 app itself is free to download and use. The monetization model is 'free' as there are no in-app purchases or subscriptions mentioned for the app's functionality. The cost would be associated with purchasing the physical DUO-LINK 3.0 storage device.

### What devices is DUO-LINK 3.0 compatible with?

DUO-LINK 3.0 is compatible with iOS 9 and older versions, including iPhone 6 Plus and iPad 4th Generation and older devices. It also works with PCs running Windows XP, Windows 7, and Windows 8, as well as Mac computers running Mac OS 10.5 or later.

### How can I free up space on my iPhone or iPad with DUO-LINK 3.0?

You can free up space by transferring photos, videos, and other files from your iPhone or iPad to the DUO-LINK 3.0 storage device. The app allows you to easily move media and files from your Apple device to the DUO-LINK 3.0 Drive, and also manage local files within the app.

## Version history (last 5 releases)

### 1.7.1 — 2021-10-11

1、Fix some bug。

### 1.7.0 — 2020-12-03

1. It is suitable for iOS 14.
2. Fix the bug.

### 1.6.7 — 2020-07-04

1、Fix some bug

### 1.6.4 — 2017-11-30

1、Support iPhoneX;
2、Fix other bug;

### 1.6.3 — 2017-10-15

1、Compatible with iOS11,support heic images;
2、Fix other bug;

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## More apps by Gopod Group Limited

- [iStickPro](https://appshunter.io/ios/app/istickpro/id975108490)
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All apps by Gopod Group Limited: https://appshunter.io/developer/975108489

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-10.*