iDiskk Pro vs DUO
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
iDiskk Pro
Manage files on a dual-connector USB drive. Seamlessly transfer data between your iOS device and Mac/PC, back up photos and contacts, and enjoy direct playback of media files. This app unlocks the full potential of your external storage solution.
- Browse files on iDiskk and app
- Transfer files between iDiskk and app
- Backup iOS photos to iDiskk
- Backup and restore iOS contacts
- Direct music and movie playback
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iDiskk is a USB drive with 2 connectors: 1, USB3.0 A, to connect to Mac or PC. In this way, iDiskk acts as a general USB drive. Users can manager files in it, copy, cut, past or delete, ect. Users can also browse files in it directly, including preview documents, playback music and movies. 2, Apple lightning connector, to connect to iOS device with lightning connector. With this app, iDiskk Pro, users can manager files in it, copy, cut, past or delete, ect. Users can also browse files in it directly, including preview documents such as .txt, .doc, .pdf, playback music and movies. (More information could be found on the website http://www.idiskk.com) iDiskk Pro is the App of the iDiskk drive, it supports the following features: * Browse files in the iDiskk. * Browse files in the app. * Transfer files between the iDiskk and the app. * Backup photo in the iOS device to iDiskk. * Backup and restore the contacts in the iOS device. * Independent music and movie playback.
DUO
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.
- 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
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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.
Screenshots
Verdict
The clearest difference is ratings volume: iDiskk Pro at 321 against DUO's 86. On price, rating, review sentiment and update cadence 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 — 2.5 for iDiskk Pro against 2.5 for DUO. Both are backed by a comparable volume of ratings — 321 and 86 respectively. Written reviews split almost evenly too, at 14% and 15% positive.
iDiskk Pro ships an update every 2 months, DUO every 3 months. The most recent releases landed on October 22, 2026 and October 28, 2026 respectively.
| Parameter | iDiskk Pro | DUO |
|---|---|---|
| Price | Free | Free |
| Rating | 2.5 (321 ratings) | 2.5 (86 ratings) — better |
| Positive reviews | 13.8% of reviews | 14.5% of reviews — better |
| Number of ratings | 321 — better | 86 |
| Update frequency | Every 2 months — better | Every 3 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 9.0 | 8.0 — better |
| Further details — not scored | ||
| Size | 22 MB | 34 MB |
| Age rating | 4+ | 4+ |
| Developer | Shenzhen Feitianxia Technology Co, Ltd. | Gopod Group Limited |
Customer experience
iDiskk Pro
DUO
User reviews
iDiskk Pro
From 321 App Store ratingsWhat we love
- 🚀 Fast file transfers
- ⚙️ Useful device for expanding storage
- 👍 Easy to use app
Room to improve
- 🐛 App crashes and freezes
- ⚠️ Compatibility issues with newer iOS versions
- 🔌 Device stops working after some time
- 🔍 Poor customer support
DUO
From 86 App Store ratingsWhat we love
- ✅ 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
Room to improve
- 🐛 Frequent app crashes and freezes
- ❌ Incompatible with newer iPhone models
- 📉 Poor app stability after updates
- 🔌 Hardware not recognized by app
- 💥 Data loss issues reported
Bugs and requests
iDiskk Pro
Reported bugs
4 issues- App crashes when trying to copy/transfer files
- Device not recognized by app after iOS updates
- Corrupted files after transfer
- Thumbnails not updating correctly after formatting SD card
Requested features
4 requests- Add 'move' option instead of just 'copy'
- Display more file information
- Allow selecting multiple files for transfer
- Improve transfer speed
DUO
Reported bugs
21 issues- 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
Show 16 moreShow fewer
- 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
Requested features
15 requests- 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
Show 10 moreShow fewer
- 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
In-app purchases
iDiskk Pro
No in-app purchases
DUO
No in-app purchases
