# 国土マップR vs 流域 / Ryuiki

The clearest difference is update cadence: 流域 / Ryuiki at every 2 days against 国土マップR's every 3 weeks. 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.

国土マップR ships an update every 3 weeks, 流域 / Ryuiki every 2 days. The most recent releases landed on October 19, 2026 and October 20, 2026 respectively.

## The numbers

| Metric | 国土マップR | 流域 / Ryuiki |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/r/id1321824379/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 53.8% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 2 days** |
| Monetization | Free | — |
| Size | 25 MB | 10 MB |
| Requires iOS | **16.6** | 17.0 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [keiji matsumoto](https://appshunter.io/developer/354143756) | [KENTA TORIMOTO](https://appshunter.io/developer/1880253937) |

## What reviewers say

### 国土マップR

[App page](https://appshunter.io/ios/app/r/id1321824379)

Access over 160 types of maps from the Geospatial Information Authority of Japan, including topographic maps, aerial photos, and disaster maps. Overlay up to three maps with adjustable transparency and view legends with a single tap. Offline caching allows for use in remote areas or airplane mode.

**Highlights:** Display 160+ types of Japanese maps, Overlay up to 3 maps, Adjustable map transparency, One-tap legend display, Automatic offline caching (up to 200MB), Simple GPS for current location, View elevation of screen center

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

**In-app purchases:** none


### 流域 / Ryuiki

[App page](https://appshunter.io/ios/app/ryuiki/id6759816013)

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

**In-app purchases:** none


## Frequently asked questions

### Is 国土マップR free?

国土マップR is free to download, with no in-app purchases.

### Is 流域 / Ryuiki free?

流域 / Ryuiki is free to download, with no in-app purchases.

### Do 国土マップR or 流域 / Ryuiki have ads?

Neither 国土マップR nor 流域 / Ryuiki shows ads.

### Which is updated more often, 国土マップR or 流域 / Ryuiki?

国土マップR ships an update every 3 weeks, and 流域 / Ryuiki every 2 days. Most recently, 国土マップR was updated on October 19, 2026 and 流域 / Ryuiki on October 20, 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.*