# GSI Map++ vs Mapply for Open Street Map

The clearest difference is in-app purchases: Mapply for Open Street Map at none against GSI Map++'s 2. Mapply for Open Street Map also leads on update cadence (weekly vs every 6 weeks). GSI Map++'s advantage is review sentiment (43% vs 14%). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. GSI Map++ sells 2 one-off in-app purchases. Mapply for Open Street Map asks for nothing beyond the download.

GSI Map++ ships an update every 6 weeks, Mapply for Open Street Map weekly. The most recent releases landed on October 15, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | GSI Map++ | Mapply for Open Street Map |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.1 (53 ratings)](https://appshunter.io/ios/app/mapply-for-open-street-map/id1591409886/reviews)** |
| Number of ratings | — | **53** |
| Positive reviews | **42.9% of reviews** | 14.3% of reviews |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | Every 6 weeks | **Weekly** |
| Monetization | Free with in-app purchases | **Ad-supported** |
| Size | 4 MB | 6 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 12+ |
| Developer | [AOBO Co.,Ltd](https://appshunter.io/developer/310846199) | [Florian Chrometz](https://appshunter.io/developer/1004595008) |

## What reviewers say

### 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 |


### Mapply for Open Street Map

[App page](https://appshunter.io/ios/app/mapply-for-open-street-map/id1591409886)

Explore detailed maps of the world, including transport networks, hiking trails, and topography. This app leverages OpenStreetMap and other specialized map layers for comprehensive navigation and outdoor adventure planning. Enjoy offline caching for uninterrupted exploration.

**Highlights:** OpenStreetMap integration, Specialized map layers (cycling, transport, sea, trails), Topographical data, Railway information, Offline caching, Satellite views

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

**In-app purchases:** none


## Frequently asked questions

### Is GSI Map++ free?

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

### Is Mapply for Open Street Map free?

Mapply for Open Street Map is free to download, with no in-app purchases.

### Do GSI Map++ or Mapply for Open Street Map have ads?

Both GSI Map++ and Mapply for Open Street Map show ads.

### Which is updated more often, GSI Map++ or Mapply for Open Street Map?

GSI Map++ ships an update every 6 weeks, and Mapply for Open Street Map weekly. Most recently, GSI Map++ was updated on October 15, 2026 and Mapply for Open Street Map on October 25, 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.*