# 四合院AR vs CAFS研究生

The clearest difference is update cadence: CAFS研究生 at every 2 months against 四合院AR's every 5 months. 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.

四合院AR ships an update every 5 months, CAFS研究生 every 2 months. The most recent releases landed on September 16, 2026 and September 15, 2026 respectively.

## The numbers

| Metric | 四合院AR | CAFS研究生 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 2 months** |
| Size | 817 MB | 31 MB |
| Requires iOS | 14.0 | **13.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [DESIGN AND CULTURAL STUDIES WORKSHOP LIMITED](https://appshunter.io/developer/1442813794) | [Beijing Hongke Baiyi Software Technology Co., Ltd.](https://appshunter.io/developer/1494077788) |

## What reviewers say

### 四合院AR

[App page](https://appshunter.io/ios/app/ar/id1493263543)

**Features:** macOS Compatibility

**In-app purchases:** none


### CAFS研究生

[App page](https://appshunter.io/ios/app/cafs/id1529694085)

**In-app purchases:** none


## Frequently asked questions

### Is 四合院AR free?

四合院AR is free to download, with no in-app purchases.

### Is CAFS研究生 free?

CAFS研究生 is free to download, with no in-app purchases.

### Do 四合院AR or CAFS研究生 have ads?

Neither 四合院AR nor CAFS研究生 shows ads.

### Which is updated more often, 四合院AR or CAFS研究生?

四合院AR ships an update every 5 months, and CAFS研究生 every 2 months. Most recently, 四合院AR was updated on September 16, 2026 and CAFS研究生 on September 15, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*