# 世界の国 vs MathNote1

The clearest difference is price: MathNote1 at Free against 世界の国's $1.99. MathNote1 also leads on update cadence (every 8 days vs every 23 months). 世界の国's advantage is in-app purchases (none vs 1) and iOS requirement (11.0 vs 18.0). On ads and device support there is nothing between them.

MathNote1 is free to download; 世界の国 costs $1.99 up front. MathNote1 sells 1 one-off in-app purchase. 世界の国 asks for nothing beyond the download.

世界の国 ships an update every 23 months, MathNote1 every 8 days. The most recent releases landed on October 30, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | 世界の国 | MathNote1 |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 23 months | **Every 8 days** |
| Monetization | — | Free |
| Size | 37 MB | 19 MB |
| Requires iOS | **11.0** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 17+ | 4+ |
| Developer | [Masahiro Tomosada](https://appshunter.io/developer/1587710118) | [Tanaka Mikihisa](https://appshunter.io/developer/1778448960) |

## What reviewers say

### 世界の国

[App page](https://appshunter.io/ios/app/id1607653457)

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

**In-app purchases:** none


### MathNote1

[App page](https://appshunter.io/ios/app/mathnote1-symbolic-calculator/id6737902948)

This app combines a notepad with a calculator, allowing you to write notes and get instant calculations. It features real-time updates for corrections, AI-powered note generation, and seamless sharing of your work. Ideal for students and professionals needing a smart tool for everyday math and complex problems.

**Highlights:** Write notes and get instant calculations, Real-time calculation updates on edits, AI-powered note correction and summarization, Smart keyboard for text and numbers, Color-coded formulas for clarity, Share notes and calculations easily

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Buy me a coffee | $0.99 | one-time |


## Frequently asked questions

### Is 世界の国 free?

世界の国 costs $1.99, with no in-app purchases.

### Is MathNote1 free?

MathNote1 is free to download, with in-app purchases available.

### Do 世界の国 or MathNote1 have ads?

Neither 世界の国 nor MathNote1 shows ads.

### Which is updated more often, 世界の国 or MathNote1?

世界の国 ships an update every 23 months, and MathNote1 every 8 days. Most recently, 世界の国 was updated on October 30, 2026 and MathNote1 on October 24, 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.*