# DUO LINK 4 vs BadAvo

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.

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.

## The numbers

| Metric | DUO LINK 4 | BadAvo |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.1 (498 ratings)](https://appshunter.io/ios/app/duo-link-4/id1103672387/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/badavo/id6746645776/reviews)** |
| Number of ratings | **498** | 1 |
| Positive reviews | 19.8% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 4 months |
| Monetization | Free | Free |
| Size | 123 MB | 15 MB |
| Requires iOS | **11.0** | 18.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [PNY](https://appshunter.io/developer/1103672386) | [VancoNext Ventures LLC](https://appshunter.io/developer/1817633932) |

## What reviewers say

### DUO LINK 4

[App page](https://appshunter.io/ios/app/duo-link-4/id1103672387)

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.

**Highlights:** Free up iPhone/iPad space, Charge iOS devices, Back up contacts, Transfer photos and videos, Store photos directly, Manage files, Music and video playback

**Features:** macOS Compatibility

**In-app purchases:** none

**What reviewers like**

- 🚀 Efficient file transfer
- 💡 Useful for freeing up phone storage
- 👍 Straightforward to use

**What reviewers complain about**

- 🐛 Frequent app crashes
- 🔍 Confusing or limited UI
- 🔌 Compatibility issues with newer devices
- 💾 Data loss or corruption

**Reported bugs**

- App fails to detect connected device
- Transferred files not visible or accessible
- Inconsistent behavior when renaming folders

**Requested features**

- Add 'select all' option for photos/files
- Support for more file formats
- Improve iPad app experience
- Integrate with native Files app


### BadAvo

[App page](https://appshunter.io/ios/app/badavo/id6746645776)

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.

**Highlights:** AI-powered ripeness detection, Camera integration, Peak ripeness window identification, User-friendly interface

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

**In-app purchases:** none


## Frequently asked questions

### Is DUO LINK 4 free?

DUO LINK 4 is free to download, with no in-app purchases.

### Is BadAvo free?

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

### Which has better reviews, DUO LINK 4 or BadAvo?

BadAvo is rated higher. DUO LINK 4 averages 2.1 out of 5 from 498 ratings, while BadAvo averages 5.0 from 1 ratings.

### Do DUO LINK 4 or BadAvo have ads?

Neither DUO LINK 4 nor BadAvo shows ads.

### Which is updated more often, DUO LINK 4 or BadAvo?

DUO LINK 4 ships an update every 2 months, and BadAvo every 4 months. Most recently, DUO LINK 4 was updated on October 13, 2026 and BadAvo on September 26, 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.*