# OpenSeaMap vs moodSailor

The clearest difference is in-app purchases: moodSailor at none against OpenSeaMap's 1. moodSailor also leads on update cadence (every 2 weeks vs every 2 months) and iOS requirement (15.0 vs 18.6). On price, ads and device support there is nothing between them.

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

OpenSeaMap ships an update every 2 months, moodSailor every 2 weeks. The most recent releases landed on October 21, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | OpenSeaMap | moodSailor |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.0 (1 ratings)](https://appshunter.io/ios/app/openseamap/id495210783/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 38.3% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 2 weeks** |
| Monetization | Free with in-app purchases | — |
| Size | 13 MB | 84 MB |
| Requires iOS | 18.6 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [appdoctors UG](https://appshunter.io/developer/961029450) | [Société Française d'Infonuagique](https://appshunter.io/developer/1845123143) |

## 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 |


### moodSailor

[App page](https://appshunter.io/ios/app/moodsailor/id6762207362)

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

**In-app purchases:** none


## Frequently asked questions

### Is OpenSeaMap free?

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

### Is moodSailor free?

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

### Do OpenSeaMap or moodSailor have ads?

Neither OpenSeaMap nor moodSailor shows ads.

### Which is updated more often, OpenSeaMap or moodSailor?

OpenSeaMap ships an update every 2 months, and moodSailor every 2 weeks. Most recently, OpenSeaMap was updated on October 21, 2026 and moodSailor 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.*