# 日本地図ドリル Ext vs アメフラシ

The clearest difference is update cadence: 日本地図ドリル Ext at every 7 months against アメフラシ's every 53 months. 日本地図ドリル Ext also leads on iOS requirement (12.0 vs 14.0). 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.

日本地図ドリル Ext ships an update every 7 months, アメフラシ every 53 months. The most recent releases landed on September 6, 2026 and September 17, 2026 respectively.

## The numbers

| Metric | 日本地図ドリル Ext | アメフラシ |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 7 months** | Every 53 months |
| Size | 63 MB | 133 MB |
| Requires iOS | **12.0** | 14.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [ryo itou](https://appshunter.io/developer/1435019729) | [CTI GRAND PLANNING CO., LTD.](https://appshunter.io/developer/1533912881) |

## What reviewers say

### 日本地図ドリル Ext

[App page](https://appshunter.io/ios/app/ext/id1454983800)

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

**In-app purchases:** none


### アメフラシ

[App page](https://appshunter.io/ios/app/id1533912879)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is 日本地図ドリル Ext free?

日本地図ドリル Ext is free to download, with no in-app purchases.

### Is アメフラシ free?

アメフラシ is free to download, with no in-app purchases.

### Do 日本地図ドリル Ext or アメフラシ have ads?

Neither 日本地図ドリル Ext nor アメフラシ shows ads.

### Which is updated more often, 日本地図ドリル Ext or アメフラシ?

日本地図ドリル Ext ships an update every 7 months, and アメフラシ every 53 months. Most recently, 日本地図ドリル Ext was updated on September 6, 2026 and アメフラシ on September 17, 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.*