DUO LINK 4 vs BadAvo
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
DUO LINK 4
Manage and transfer files between your iOS device and a USB flash drive. Free up storage, back up data, and even charge your device. Supports a wide range of file formats for seamless integration.
- Free up iPhone/iPad space
- Charge iOS devices
- Back up contacts
- Transfer photos and videos
- Store photos directly
- Manage files
- Music and video playback
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PNY DUO LINK 4 app, designed to work with DUO LINK OTG USB 3.0 Flash Drive brings you the ability to do more when it comes to file transfer, saving, sharing, accessing and streaming. Simply connect the DUO LINK OTG USB 3.0 Flash Drive to your iPhone and iPad and start syncing, transferring, sharing files, photos, videos and more with ease. DUO LINK OTG USB 3.0 is a flash drive designed for iPhone and iPad that enables you to free up space on your iOS device, save and protrect your contents into DUO LINK and even transfer then to your computer. DUO LINK OTG USB 3.0 also provides the ability for you to charge your iPhone and iPad. Features and Benefits: - Free up space on your iPhone or iPad. - Charge your iOS device. - Back-up your contacts. - Transfer and share your videos, photos and more. - Store photos directly into DUO LINK and save space on your iPhone or iPad. - Manage files on your iPhone, iPad and on DUO LINK. - Supports independent music and video playback. - Automatically back up your photos and videos so that you don't have to. Support: Please visit PNY Support at www.pny.com/support/technical-support Supported file formats: - video: M4V/MP4/MOV - Audio: M4A, CAF, AIFF, ASF, AAC, mp3, wav - Picture: TIFF, JPEG,JPG,PNG,GIF,BMP - Document: DOC, DOCX, PAGES, RTF, TXT , PPT, PPTX, PDF, XLS, XLSX, NUMBERS, KEY, HTML PNY takes no responsibility or liability with respect to the download or usage of DUO-LINK 4 app. By downloading this app you agree to the end user license agreement from PNY, also available at http://www.pny.com/File%20Library/Unassigned/PNY--On-the-Go-End-User-License-Agreement.pdf .
BadAvo
This app uses AI and your phone's camera to determine the optimal ripeness of avocados. It helps you avoid disappointment by identifying the perfect time to eat your fruit.
- AI-powered ripeness detection
- Camera integration
- Peak ripeness window identification
- User-friendly interface
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BadAvo uses your phone’s camera and the power of AI to tell when your avocado is in its peak ripeness window.
Screenshots
Verdict
The clearest difference is rating: BadAvo at 5.0 against DUO LINK 4's 2.1. DUO LINK 4's advantage is ratings volume (498 vs 1) and iOS requirement (11.0 vs 18.6). On price, update cadence, ads and in-app purchases 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.
BadAvo holds the better App Store score, 5.0 against 2.1. That said, the two scores are not equally well evidenced: DUO LINK 4 has 498 ratings behind it against 1, so its average is the more settled of the two.
DUO LINK 4 ships an update every 2 months, BadAvo every 4 months. The most recent releases landed on October 13, 2026 and September 26, 2026 respectively.
| Parameter | DUO LINK 4 | BadAvo |
|---|---|---|
| Price | Free | Free |
| Rating | 2.1 (498 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 19.8% of reviews | — |
| Number of ratings | 498 — better | 1 |
| Update frequency | Every 2 months — better | Every 4 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 11.0 — better | 18.6 |
| Further details — not scored | ||
| Size | 123 MB | 15 MB |
| Age rating | 4+ | 4+ |
| Developer | PNY | VancoNext Ventures LLC |
Customer experience
DUO LINK 4
BadAvo
Bugs and requests
DUO LINK 4
Reported bugs
3 issues- App fails to detect connected device
- Transferred files not visible or accessible
- Inconsistent behavior when renaming folders
Requested features
4 requests- Add 'select all' option for photos/files
- Support for more file formats
- Improve iPad app experience
- Integrate with native Files app
BadAvo
Not enough reviews yet to summarise bugs or requests.
In-app purchases
DUO LINK 4
No in-app purchases
BadAvo
No in-app purchases
