# 学研さんすうランド 数字 時計 はじめての算数知育ゲーム vs Observation Note

The clearest difference is price: 学研さんすうランド 数字 時計 はじめての算数知育ゲーム at Free against Observation Note's $5.99. 学研さんすうランド 数字 時計 はじめての算数知育ゲーム also leads on iOS requirement (13.0 vs 18.5). Observation Note's advantage is in-app purchases (none vs 6) and ads (none vs shown). On device support there is nothing between them.

学研さんすうランド 数字 時計 はじめての算数知育ゲーム is free to download; Observation Note costs $5.99 up front. 学研さんすうランド 数字 時計 はじめての算数知育ゲーム sells 6 one-off in-app purchases. Observation Note asks for nothing beyond the download.

学研さんすうランド 数字 時計 はじめての算数知育ゲーム ships an update every 2 weeks, Observation Note every 6 days. The most recent releases landed on November 7, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | 学研さんすうランド 数字 時計 はじめての算数知育ゲーム | Observation Note |
| --- | --- | --- |
| Price | **Free** | $5.99 |
| Rating | **[4.4 (8 ratings)](https://appshunter.io/ios/app/id1661497567/reviews)** | — |
| Number of ratings | **8** | — |
| Positive reviews | 92.3% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 2 weeks | **Every 6 days** |
| Monetization | Free with in-app purchases | — |
| Size | 337 MB | 1 MB |
| Requires iOS | **13.0** | 18.5 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Gakken CO.,LTD](https://appshunter.io/developer/294791161) | [Hajime Sasaki](https://appshunter.io/developer/1823569302) |

## What reviewers say

### 学研さんすうランド 数字 時計 はじめての算数知育ゲーム

[App page](https://appshunter.io/ios/app/id1661497567)

This educational game helps young children develop foundational math skills, including number recognition, addition, subtraction, and telling time. It features engaging characters and a progressive learning path designed for preschool and early elementary ages.

**Highlights:** Number recognition up to 100, Addition and subtraction practice, Analog and digital clock learning, Story-driven map progression, Free play mode by genre, Character-based learning

**Features:** macOS Compatibility

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| ユーザー2のマップ1アンロック（ステージ解放） | $2.99 | one-time |
| ユーザー3のマップ1アンロック（ステージ解放） | $2.99 | one-time |
| ユーザー1のマップ1アンロック（ステージ解放） | $2.99 | one-time |
| ユーザー1のマップ3アンロック（ステージ解放） | $2.99 | one-time |
| ユーザー2のマップ3アンロック（ステージ解放） | $2.99 | one-time |
| ユーザー3のマップ3アンロック（ステージ解放） | $2.99 | one-time |


### Observation Note

[App page](https://appshunter.io/ios/app/observation-note/id6747956503)

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

**In-app purchases:** none


## Frequently asked questions

### Is 学研さんすうランド 数字 時計 はじめての算数知育ゲーム free?

学研さんすうランド 数字 時計 はじめての算数知育ゲーム is free to download, with in-app purchases available.

### Is Observation Note free?

Observation Note costs $5.99, with no in-app purchases.

### Do 学研さんすうランド 数字 時計 はじめての算数知育ゲーム or Observation Note have ads?

学研さんすうランド 数字 時計 はじめての算数知育ゲーム shows ads; Observation Note does not.

### Which is updated more often, 学研さんすうランド 数字 時計 はじめての算数知育ゲーム or Observation Note?

学研さんすうランド 数字 時計 はじめての算数知育ゲーム ships an update every 2 weeks, and Observation Note every 6 days. Most recently, 学研さんすうランド 数字 時計 はじめての算数知育ゲーム was updated on November 7, 2026 and Observation Note on November 5, 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.*