# 珍貴的記憶AR vs RainbowSky

The clearest difference is update cadence: RainbowSky at every 2 weeks against 珍貴的記憶AR's every 51 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.

珍貴的記憶AR ships an update every 51 months, RainbowSky every 2 weeks. The most recent releases landed on October 26, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | 珍貴的記憶AR | RainbowSky |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 51 months | **Every 2 weeks** |
| Size | 246 MB | 292 MB |
| Requires iOS | 12.0 | 12.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [DESIGN AND CULTURAL STUDIES WORKSHOP LIMITED](https://appshunter.io/developer/1442813794) | [Open Knowledge Association Ltd.](https://appshunter.io/developer/868011308) |

## What reviewers say

### 珍貴的記憶AR

[App page](https://appshunter.io/ios/app/ar/id1453118776)

**Features:** macOS Compatibility

**In-app purchases:** none


### RainbowSky

[App page](https://appshunter.io/ios/app/rainbowsky/id6771268020)

**In-app purchases:** none


## Frequently asked questions

### Is 珍貴的記憶AR free?

珍貴的記憶AR is free to download, with no in-app purchases.

### Is RainbowSky free?

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

### Do 珍貴的記憶AR or RainbowSky have ads?

Neither 珍貴的記憶AR nor RainbowSky shows ads.

### Which is updated more often, 珍貴的記憶AR or RainbowSky?

珍貴的記憶AR ships an update every 51 months, and RainbowSky every 2 weeks. Most recently, 珍貴的記憶AR was updated on October 26, 2026 and RainbowSky on October 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.*