# 平面直角座標 vs GSI Map++

The clearest difference is review sentiment: 平面直角座標 at 86% against GSI Map++'s 43%. 平面直角座標 also leads on in-app purchases (none vs 2) and ads (none vs shown). GSI Map++'s advantage is update cadence (every 6 weeks vs every 14 months). On price and device support there is nothing between them.

Both are free to download. GSI Map++ sells 2 one-off in-app purchases. 平面直角座標 asks for nothing beyond the download.

平面直角座標 ships an update every 14 months, GSI Map++ every 6 weeks. Both last shipped on October 15, 2026.

## The numbers

| Metric | 平面直角座標 | GSI Map++ |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | **85.7% of reviews** | 42.9% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 14 months | **Every 6 weeks** |
| Monetization | — | Free with in-app purchases |
| Size | 4 MB | 4 MB |
| Requires iOS | **10.0** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [keiji matsumoto](https://appshunter.io/developer/354143756) | [AOBO Co.,Ltd](https://appshunter.io/developer/310846199) |

## What reviewers say

### 平面直角座標

[App page](https://appshunter.io/ios/app/id853019561)

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

**In-app purchases:** none


### GSI Map++

[App page](https://appshunter.io/ios/app/gsi-map-plus-plus/id994054184)

This app displays maps from the Geospatial Information Authority of Japan, offering various map types and measurement tools. It allows integration with Apple Maps or Google Maps for directions and provides location details with memo and photo options.

**Highlights:** Display GSI maps, Integrate with Apple/Google Maps, Switch to OpenStreetMap, Measure distance and area, Display location and elevation, Add location bookmarks, Save tile data locally

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 広告の削除（6ヶ月間） | $2.99 | one-time |
| 広告の削除（１年間） | $3.99 | one-time |


## Frequently asked questions

### Is 平面直角座標 free?

平面直角座標 is free to download, with no in-app purchases.

### Is GSI Map++ free?

GSI Map++ is free to download, with in-app purchases available.

### Do 平面直角座標 or GSI Map++ have ads?

GSI Map++ shows ads; 平面直角座標 does not.

### Which is updated more often, 平面直角座標 or GSI Map++?

平面直角座標 ships an update every 14 months, and GSI Map++ every 6 weeks. Most recently, 平面直角座標 was updated on October 15, 2026 and GSI Map++ on October 15, 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.*