# 月の満ち欠けAR＋Jr vs Light Lab

The clearest difference is in-app purchases: 月の満ち欠けAR＋Jr at none against Light Lab's 2. 月の満ち欠けAR＋Jr also leads on iOS requirement (13.0 vs 16.6). Light Lab's advantage is update cadence (every 3 months vs every 7 months). On price, ads and device support there is nothing between them.

Both are free to download. Light Lab sells 2 one-off in-app purchases. 月の満ち欠けAR＋Jr asks for nothing beyond the download.

月の満ち欠けAR＋Jr ships an update every 7 months, Light Lab every 3 months. The most recent releases landed on October 3, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | 月の満ち欠けAR＋Jr | Light Lab |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 7 months | **Every 3 months** |
| Size | 81 MB | 8 MB |
| Requires iOS | **13.0** | 16.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Hiroyuki Nakano](https://appshunter.io/developer/1091174971) | [THSS](https://appshunter.io/developer/1722239755) |

## What reviewers say

### 月の満ち欠けAR＋Jr

[App page](https://appshunter.io/ios/app/arjr/id1568980853)

**Features:** macOS Compatibility

**In-app purchases:** none


### Light Lab

[App page](https://appshunter.io/ios/app/light-lab-learn-optics/id6504238420)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Purchase all lenses | $4.99 | one-time |
| Lens Ticket Issuance Function | $9.99 | one-time |


## Frequently asked questions

### Is 月の満ち欠けAR＋Jr free?

月の満ち欠けAR＋Jr is free to download, with no in-app purchases.

### Is Light Lab free?

Light Lab is free to download, with in-app purchases available.

### Do 月の満ち欠けAR＋Jr or Light Lab have ads?

Neither 月の満ち欠けAR＋Jr nor Light Lab shows ads.

### Which is updated more often, 月の満ち欠けAR＋Jr or Light Lab?

月の満ち欠けAR＋Jr ships an update every 7 months, and Light Lab every 3 months. Most recently, 月の満ち欠けAR＋Jr was updated on October 3, 2026 and Light Lab on October 2, 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.*