# DUO LINK 4 vs Clario AntiSpy

The clearest difference is review sentiment: Clario AntiSpy at 64% against DUO LINK 4's 20%. Clario AntiSpy also leads on rating (3.9 vs 2.1) and update cadence (every 2 weeks vs every 2 months). DUO LINK 4's advantage is in-app purchases (none vs 3) and iOS requirement (11.0 vs 15.0). On price, ratings volume, ads and device support there is nothing between them.

Both are free to download. Clario AntiSpy sells 3 in-app purchases, starting at $14.99 per month. DUO LINK 4 asks for nothing beyond the download.

Clario AntiSpy holds the better App Store score, 3.9 against 2.1. Both are backed by a comparable volume of ratings — 513 and 840 respectively. Written reviews point the same way: 20% of DUO LINK 4's written reviews are positive against 64% of Clario AntiSpy's.

DUO LINK 4 ships an update every 2 months, Clario AntiSpy every 2 weeks. The most recent releases landed on October 24, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | DUO LINK 4 | Clario AntiSpy |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.1 (513 ratings)](https://appshunter.io/ios/app/duo-link-4/id1103672387/reviews) | **[3.9 (840 ratings)](https://appshunter.io/ios/app/clario-antispy/id1663473665/reviews)** |
| Number of ratings | 513 | **840** |
| Positive reviews | 19.8% of reviews | **63.9% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 2 weeks** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 123 MB | 103 MB |
| Requires iOS | **11.0** | 15.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [PNY](https://appshunter.io/developer/1103672386) | [CLARIO TECH FZCO](https://appshunter.io/developer/1613920305) |

## 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


### Clario AntiSpy

[App page](https://appshunter.io/ios/app/clario-antispy/id1663473665)

This cybersecurity app helps protect your digital privacy by scanning for hidden spy apps, detecting unauthorized device access, and monitoring for data breaches. It offers features like an anti-theft alarm, spy camera detection, and 24/7 human support for enhanced security.

**Highlights:** Hidden app scan, Anti-theft alarm, Spy camera detector, Data breach monitor, Device system check, 24/7 human assistance

**Features:** Safari Extension, Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly plan for 3 devices | $14.99 | per month |
| 3-month plan for 3 devices | $34.99 | per 3 months |
| 6-month plan for 3 devices | $49.99 | per 6 months |

**What reviewers like**

- 🚀 Fast and efficient
- 🔒 Robust security features
- 👍 User-friendly interface
- 🤖 Helpful support team
- 🔍 Effective spyware detection

**What reviewers complain about**

- 🐛 Bugs and glitches
- 💰 Expensive subscription
- 🔄 Difficult to cancel subscription
- 🚫 Lack of free version
- 📝 Manual setup process

**Reported bugs**

- Login issues and account management problems
- Virtual location feature not working as expected
- Subscription cancellation process not straightforward

**Requested features**

- Add support for multiple languages
- Implement automatic location spoofing
- Include a free version with limited features
- Provide an easier way to delete photos taken by Unlock Catcher


## Frequently asked questions

### Is DUO LINK 4 free?

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

### Is Clario AntiSpy free?

Clario AntiSpy is free to download, with in-app purchases available.

### Which has better reviews, DUO LINK 4 or Clario AntiSpy?

Clario AntiSpy is rated higher. DUO LINK 4 averages 2.1 out of 5 from 513 ratings, while Clario AntiSpy averages 3.9 from 840 ratings.

### Do DUO LINK 4 or Clario AntiSpy have ads?

Neither DUO LINK 4 nor Clario AntiSpy shows ads.

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

DUO LINK 4 ships an update every 2 months, and Clario AntiSpy every 2 weeks. Most recently, DUO LINK 4 was updated on October 24, 2026 and Clario AntiSpy on October 27, 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.*