# DUO LINK 4 vs Kwikset

The clearest difference is rating: Kwikset at 4.8 against DUO LINK 4's 2.1. Kwikset also leads on review sentiment (48% vs 20%) and ratings volume (60K vs 513). DUO LINK 4's advantage is iOS requirement (11.0 vs 16.0). 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.

Kwikset holds the better App Store score, 4.8 against 2.1. That said, the two scores are not equally well evidenced: Kwikset has 60K ratings behind it against 513, so its average is the more settled of the two. Written reviews point the same way: 20% of DUO LINK 4's written reviews are positive against 48% of Kwikset's.

DUO LINK 4 ships an update every 2 months, Kwikset every 3 months. The most recent releases landed on October 24, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | DUO LINK 4 | Kwikset |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.1 (513 ratings)](https://appshunter.io/ios/app/duo-link-4/id1103672387/reviews) | **[4.8 (60K ratings)](https://appshunter.io/ios/app/kwikset/id1465996742/reviews)** |
| Number of ratings | 513 | **60K** |
| Positive reviews | 19.8% of reviews | **47.9% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 3 months |
| Monetization | Free | Free |
| Size | 123 MB | 356 MB |
| Requires iOS | **11.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [PNY](https://appshunter.io/developer/1103672386) | [ASSA ABLOY AMERICAS RESIDENTIAL INC.](https://appshunter.io/developer/1779069863) |

## 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


### Kwikset

[App page](https://appshunter.io/ios/app/kwikset/id1465996742)

Control and monitor your smart locks remotely, manage guest access with custom codes, and receive instant security alerts. Integrate with popular smart home ecosystems for enhanced automation and peace of mind.

**Highlights:** Remote lock monitoring and control, Guest access code management, Instant activity and security alerts, Multi-home and lock management, Smart home ecosystem integration (Wi-Fi, Matter), Encrypted data security

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

**In-app purchases:** none

**What reviewers like**

- 🚀 Easy to use
- 🔒 Secure access
- 👍 Convenient remote control
- 👍 Helpful for short-term rentals
- 👍 Great design

**What reviewers complain about**

- 🐛 Connectivity issues
- 🔋 Battery life problems
- 🐛 Unreliable app performance
- 🐛 Firmware update challenges
- 🐛 Difficult setup and pairing

**Reported bugs**

- App crashes and freezes
- Inability to update firmware
- Inconsistent lock status reporting
- Pairing failures with Bluetooth and WiFi

**Requested features**

- Customizable notifications
- Ability to manage multiple locks
- Scheduled auto-lock feature
- Integration with smart home platforms


## Frequently asked questions

### Is DUO LINK 4 free?

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

### Is Kwikset free?

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

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

Kwikset is rated higher. DUO LINK 4 averages 2.1 out of 5 from 513 ratings, while Kwikset averages 4.8 from 60K ratings.

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

Neither DUO LINK 4 nor Kwikset shows ads.

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

DUO LINK 4 ships an update every 2 months, and Kwikset every 3 months. Most recently, DUO LINK 4 was updated on October 24, 2026 and Kwikset on October 30, 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.*