# 知丘 vs Union Authenticator

The clearest difference is iOS requirement: Union Authenticator at 12.0 against 知丘's 15.0. 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.

Both ship on a similar rhythm, roughly every 6 weeks. The most recent releases landed on October 2, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | 知丘 | Union Authenticator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/id1352853566/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 weeks | Every 6 weeks |
| Size | 45 MB | 44 MB |
| Requires iOS | 15.0 | **12.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 17+ | 9+ |
| Developer | [携宁科技](https://appshunter.io/developer/1112043801) | [Guangzhou JN UNION Technology Co.,Ltd](https://appshunter.io/developer/1377554402) |

## What reviewers say

### 知丘

[App page](https://appshunter.io/ios/app/id1352853566)

**Features:** Vision Pro support

**In-app purchases:** none


### Union Authenticator

[App page](https://appshunter.io/ios/app/union-authenticator/id1377554403)

**In-app purchases:** none


## Frequently asked questions

### Is 知丘 free?

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

### Is Union Authenticator free?

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

### Do 知丘 or Union Authenticator have ads?

Neither 知丘 nor Union Authenticator shows ads.

### Which is updated more often, 知丘 or Union Authenticator?

知丘 ships an update every 6 weeks, and Union Authenticator every 6 weeks. Most recently, 知丘 was updated on October 2, 2026 and Union Authenticator on October 3, 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.*