# DUO LINK 4 vs Traxx it

The clearest difference is iOS requirement: Traxx it at 8.0 against DUO LINK 4's 11.0. On price, rating, review sentiment and ratings volume there is nothing between them.

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 — 2.1 for DUO LINK 4 against 2.2 for Traxx it. Both are backed by a comparable volume of ratings — 513 and 174 respectively. Written reviews are what separate them: 20% of DUO LINK 4's written reviews are positive against 22% of Traxx it's.

DUO LINK 4 ships an update every 2 months, Traxx it every 3 months. Both last shipped on October 24, 2026.

## The numbers

| Metric | DUO LINK 4 | Traxx it |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.1 (513 ratings)](https://appshunter.io/ios/app/duo-link-4/id1103672387/reviews) | **[2.2 (174 ratings)](https://appshunter.io/ios/app/traxx-it/id1189011581/reviews)** |
| Number of ratings | **513** | 174 |
| Positive reviews | 19.8% of reviews | **21.9% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 3 months |
| Monetization | Free | Free |
| Size | 123 MB | 40 MB |
| Requires iOS | 11.0 | **8.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [PNY](https://appshunter.io/developer/1103672386) | [桂标 曾](https://appshunter.io/developer/985954900) |

## 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


### Traxx it

[App page](https://appshunter.io/ios/app/traxx-it/id1189011581)

This app helps you find lost items by pairing with a Bluetooth device. Trigger an alarm on either your phone or the device to locate them. It also offers features like photo/video capture, map locating, and meeting recording.

**Highlights:** Two-way anti-lost alarm, Item finding via sound, Phone finding via sound, Bluetooth disconnection alert, Photo and video capture, Map locating, Meeting recording

**In-app purchases:** none

**What reviewers like**

- 💰 Affordable price point ($5)
- 🔄 Dual functionality - locate keys or phone
- ⚡ Easy setup process
- 🎨 Compact and lightweight design
- 📍 Works within reasonable range for the price

**What reviewers complain about**

- 🔌 Constant disconnection issues
- 📵 App must stay open or device beeps
- 📏 Very limited range (20-75 feet)
- 🔋 Poor battery performance
- 🔊 Alarm beeps uncontrollably when disconnected

**Reported bugs**

- Device fails to power on
- App won't load or crashes
- Bluetooth pairing fails repeatedly
- Device disconnects immediately after app closes
- Battery arrives dead

**Requested features**

- Background app functionality without disconnection
- Mobile data connectivity option
- Increased alarm volume
- Longer Bluetooth range
- Better battery optimization


## Frequently asked questions

### Is DUO LINK 4 free?

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

### Is Traxx it free?

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

### Which has better reviews, DUO LINK 4 or Traxx it?

Traxx it is rated higher. DUO LINK 4 averages 2.1 out of 5 from 513 ratings, while Traxx it averages 2.2 from 174 ratings.

### Do DUO LINK 4 or Traxx it have ads?

Neither DUO LINK 4 nor Traxx it shows ads.

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

DUO LINK 4 ships an update every 2 months, and Traxx it every 3 months. Most recently, DUO LINK 4 was updated on October 24, 2026 and Traxx it on October 24, 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.*