DUO vs Keepsake AI
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
Keepsake AI
This app acts as a digital bridge, allowing you to back up photos, videos, and files from your smartphone directly to a connected USB storage device. It offers anytime, anywhere access to your data, ensuring your important memories and documents are safely stored off your phone.
- Backup photos and videos
- Backup files
- Connects to USB storage
- Anytime, anywhere access
- Direct smartphone connection
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It's a smartphone USB stick that connects directly to your phone to back up everything, such as photos, videos, files and more, anytime, anywhere
Screenshots
Verdict
The clearest difference is in-app purchases: DUO at none against Keepsake AI's 4. DUO also leads on rating (2.5 vs 2.1) and review sentiment (18% vs 0%). Keepsake AI's advantage is update cadence (every 3 weeks vs every 3 months). On price, ads and device support 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. Keepsake AI sells 4 one-off in-app purchases. DUO asks for nothing beyond the download.
DUO holds the better App Store score, 2.5 against 2.1. That said, the two scores are not equally well evidenced: DUO has 86 ratings behind it against 7, so its average is the more settled of the two. Written reviews point the same way: 18% of DUO's written reviews are positive against 0% of Keepsake AI's.
DUO ships an update every 3 months, Keepsake AI every 3 weeks. The most recent releases landed on October 21, 2026 and October 24, 2026 respectively.
| Parameter | DUO | Keepsake AI |
|---|---|---|
| Price | Free | Free |
| Rating | 2.5 (86 ratings) — better | 2.1 (7 ratings) |
| Positive reviews | 17.5% of reviews — better | 0.0% of reviews |
| Number of ratings | 86 — better | 7 |
| Update frequency | Every 3 months | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 8.0 — better | 13.0 |
| Further details — not scored | ||
| Size | 34 MB | 116 MB |
| Age rating | 4+ | 17+ |
| Developer | Gopod Group Limited | Me Too Software, LLC |
Customer experience
DUO
Keepsake AI
Bugs and requests
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
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- 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
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- 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
Keepsake AI
Not enough reviews yet to summarise bugs or requests.
In-app purchases
DUO
No in-app purchases
Keepsake AI
- Package 4$2.99
- 200 Credits$19.99
- 600 Credits$49.99
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- Package 4$99.99
