# 平行四邊形 vs 記桃花源AR

The clearest difference is update cadence: 記桃花源AR at weekly against 平行四邊形's every 36 months. 平行四邊形's advantage is iOS requirement (6.0 vs 13.0). 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.

平行四邊形 ships an update every 36 months, 記桃花源AR weekly. The most recent releases landed on November 6, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | 平行四邊形 | 記桃花源AR |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 36 months | **Weekly** |
| Size | 22 MB | 228 MB |
| Requires iOS | **6.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Modern Educational Research Society, LTD](https://appshunter.io/developer/432268704) | [DESIGN AND CULTURAL STUDIES WORKSHOP LIMITED](https://appshunter.io/developer/1442813794) |

## What reviewers say

### 平行四邊形

[App page](https://appshunter.io/ios/app/id950930908)

**Features:** macOS Compatibility

**In-app purchases:** none


### 記桃花源AR

[App page](https://appshunter.io/ios/app/ar/id1543946398)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is 平行四邊形 free?

平行四邊形 is free to download, with no in-app purchases.

### Is 記桃花源AR free?

記桃花源AR is free to download, with no in-app purchases.

### Do 平行四邊形 or 記桃花源AR have ads?

Neither 平行四邊形 nor 記桃花源AR shows ads.

### Which is updated more often, 平行四邊形 or 記桃花源AR?

平行四邊形 ships an update every 36 months, and 記桃花源AR weekly. Most recently, 平行四邊形 was updated on November 6, 2026 and 記桃花源AR on November 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.*