# OpenSeaMap vs WinGPS Marine

The clearest difference is review sentiment: OpenSeaMap at 38% against WinGPS Marine's 0%. WinGPS Marine's advantage is in-app purchases (none vs 1) and rating (1.3 vs 1.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. OpenSeaMap sells 1 one-off in-app purchase. WinGPS Marine asks for nothing beyond the download.

WinGPS Marine holds the better App Store score, 1.3 against 1.0. Both are backed by a comparable volume of ratings — 1 and 3 respectively. Written reviews complicate that: 38% of OpenSeaMap's written reviews are positive against 0% of WinGPS Marine's, so the app with the better star average is not the one people write more warmly about.

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on November 1, 2026 and November 2, 2026 respectively.

## The numbers

| Metric | OpenSeaMap | WinGPS Marine |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [1.0 (1 ratings)](https://appshunter.io/ios/app/openseamap/id495210783/reviews) | **[1.3 (3 ratings)](https://appshunter.io/ios/app/wingps-marine/id1398954055/reviews)** |
| Number of ratings | 1 | **3** |
| Positive reviews | **38.3% of reviews** | 0.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 months | Every 2 months |
| Monetization | Free with in-app purchases | **Free** |
| Size | 13 MB | 60 MB |
| Requires iOS | 18.6 | **13.1** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [appdoctors UG](https://appshunter.io/developer/961029450) | [Stentec Software](https://appshunter.io/developer/1398954054) |

## What reviewers say

### OpenSeaMap

[App page](https://appshunter.io/ios/app/openseamap/id495210783)

This app provides a free, worldwide nautical chart with detailed sea information, including lights, weather data, and harbor details. It offers chartplotting, waypoint management, and offline map caching for navigation. Users can mark locations, enter coordinates, and adjust chart zoom for optimal viewing.

**Highlights:** Free worldwide sea chart, Chartplotting with tracking, Waypoint creation and export, Offline map caching, Mark and search locations, Adjustable chart zoom

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| OpenSeaMap Professional | $1.99 | one-time |


### WinGPS Marine

[App page](https://appshunter.io/ios/app/wingps-marine/id1398954055)

This app provides onboard navigation for various watercraft. It displays your GPS position, speed, and course, and allows you to download nautical charts with depth information and navigational aids. Set waypoints and sail to your destination with guidance on course and distance.

**Highlights:** Real-time GPS position, speed, and course tracking, Downloadable nautical charts with depth and aids, Waypoint navigation with Course to Go, Waterway network information (bridges, locks), View sailed tracks on charts, Distance circles around GPS position

**In-app purchases:** none


## Frequently asked questions

### Is OpenSeaMap free?

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

### Is WinGPS Marine free?

WinGPS Marine is free to download, with no in-app purchases.

### Which has better reviews, OpenSeaMap or WinGPS Marine?

WinGPS Marine is rated higher. OpenSeaMap averages 1.0 out of 5 from 1 ratings, while WinGPS Marine averages 1.3 from 3 ratings.

### Do OpenSeaMap or WinGPS Marine have ads?

Neither OpenSeaMap nor WinGPS Marine shows ads.

### Which is updated more often, OpenSeaMap or WinGPS Marine?

OpenSeaMap ships an update every 2 months, and WinGPS Marine every 2 months. Most recently, OpenSeaMap was updated on November 1, 2026 and WinGPS Marine on November 2, 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.*