# 世界の国 vs Imiru

The clearest difference is price: Imiru at Free against 世界の国's $1.99. Imiru also leads on update cadence (weekly vs every 23 months). 世界の国's advantage is iOS requirement (11.0 vs 15.0). On ads, in-app purchases and device support there is nothing between them.

Imiru is free to download; 世界の国 costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

世界の国 ships an update every 23 months, Imiru weekly. The most recent releases landed on October 13, 2026 and October 23, 2026 respectively.

## The numbers

| Metric | 世界の国 | Imiru |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Rating | — | **[5.0 (7 ratings)](https://appshunter.io/ios/app/imiru/id6786283478/reviews)** |
| Number of ratings | — | **7** |
| Positive reviews | — | 94.4% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 23 months | **Weekly** |
| Monetization | — | Free |
| Size | 37 MB | 55 MB |
| Requires iOS | **11.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Masahiro Tomosada](https://appshunter.io/developer/1587710118) | [奕舟 颜](https://appshunter.io/developer/1800189948) |

## 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


### Imiru

[App page](https://appshunter.io/ios/app/imiru/id6786283478)

Master Japanese katakana loanwords with daily challenges. This app helps you recognize unfamiliar characters by connecting them to their original words, building your vocabulary through engaging practice and progress tracking.

**Highlights:** Daily katakana loanword challenges, Progress tracking with calendar streaks, Replay cards for missed days, XP and level-up system, Cloud sync across devices

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

**In-app purchases:** none


## Frequently asked questions

### Is 世界の国 free?

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

### Is Imiru free?

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

### Do 世界の国 or Imiru have ads?

Neither 世界の国 nor Imiru shows ads.

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

世界の国 ships an update every 23 months, and Imiru weekly. Most recently, 世界の国 was updated on October 13, 2026 and Imiru on October 23, 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.*