# HIN Authenticator vs Cất Link

The clearest difference is update cadence: Cất Link at monthly against HIN Authenticator's every 13 months. HIN Authenticator's advantage is iOS requirement (15.1 vs 17.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

HIN Authenticator ships an update every 13 months, Cất Link monthly. The most recent releases landed on November 7, 2026 and November 6, 2026 respectively.

## The numbers

| Metric | HIN Authenticator | Cất Link |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 13 months | **Monthly** |
| Size | 98 MB | 7 MB |
| Requires iOS | **15.1** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Health Info Net AG](https://appshunter.io/developer/1091175891) | [Tran Cuong](https://appshunter.io/developer/1869197483) |

## What reviewers say

### HIN Authenticator

[App page](https://appshunter.io/ios/app/hin-authenticator/id1535944002)

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

**In-app purchases:** none


### Cất Link

[App page](https://appshunter.io/ios/app/cat-link/id6802268890)

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

**In-app purchases:** none


## Frequently asked questions

### Is HIN Authenticator free?

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

### Is Cất Link free?

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

### Do HIN Authenticator or Cất Link have ads?

Neither HIN Authenticator nor Cất Link shows ads.

### Which is updated more often, HIN Authenticator or Cất Link?

HIN Authenticator ships an update every 13 months, and Cất Link monthly. Most recently, HIN Authenticator was updated on November 7, 2026 and Cất Link on November 6, 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.*