# GSI Map++ vs OpenMaps

The clearest difference is review sentiment: GSI Map++ at 43% against OpenMaps's 10%. GSI Map++ also leads on iOS requirement (15.0 vs 18.0). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. GSI Map++ sells 2 one-off in-app purchases and OpenMaps sells 2 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

GSI Map++ ships an update every 6 weeks, OpenMaps every 2 months. The most recent releases landed on September 11, 2026 and September 22, 2026 respectively.

## The numbers

| Metric | GSI Map++ | OpenMaps |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[3.9 (16 ratings)](https://appshunter.io/ios/app/openmaps-topographic-maps/id1035361157/reviews)** |
| Number of ratings | — | **16** |
| Positive reviews | **42.9% of reviews** | 9.7% of reviews |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | **Every 6 weeks** | Every 2 months |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 4 MB | 21 MB |
| Requires iOS | **15.0** | 18.0 |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, Mac, Apple Watch** |
| Age rating | 4+ | +4 |
| Developer | [AOBO Co.,Ltd](https://appshunter.io/developer/310846199) | [Immaginet Srl](https://appshunter.io/developer/545184631) |

## 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 |


### OpenMaps

[App page](https://appshunter.io/ios/app/openmaps-topographic-maps/id1035361157)

Access detailed, open-source topographic maps for all your outdoor adventures. Plan hikes, discover trails, and navigate with confidence using community-driven data from OpenStreetMap.

**Highlights:** Detailed topographic maps, OpenStreetMap (OSM) data, Live tile mapping, Route planning, Community-driven data, Offline map access (implied by planning/navigation)

**Features:** Apple Watch app, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| OpenMaps Pro Monthly | $1.99 | per month |
| Open Maps Pro Yearly Plan | $8.99 | per year |


## Frequently asked questions

### Is GSI Map++ free?

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

### Is OpenMaps free?

OpenMaps is free to download, with in-app purchases available.

### Do GSI Map++ or OpenMaps have ads?

Both GSI Map++ and OpenMaps show ads.

### Which is updated more often, GSI Map++ or OpenMaps?

GSI Map++ ships an update every 6 weeks, and OpenMaps every 2 months. Most recently, GSI Map++ was updated on September 11, 2026 and OpenMaps on September 22, 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.*