# OpenSeaMap vs Bodensee Navigator

The clearest difference is review sentiment: Bodensee Navigator at 83% against OpenSeaMap's 38%. Bodensee Navigator also leads on iOS requirement (15.6 vs 18.6). OpenSeaMap's advantage is update cadence (every 2 months vs every 9 months). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. OpenSeaMap sells 1 one-off in-app purchase and Bodensee Navigator sells 4 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

OpenSeaMap ships an update every 2 months, Bodensee Navigator every 9 months. The most recent releases landed on October 21, 2026 and September 21, 2026 respectively.

## The numbers

| Metric | OpenSeaMap | Bodensee Navigator |
| --- | --- | --- |
| 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 | **83.3% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 9 months |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 13 MB | 61 MB |
| Requires iOS | 18.6 | **15.6** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [appdoctors UG](https://appshunter.io/developer/961029450) | [Joscha Eckert](https://appshunter.io/developer/1459511411) |

## 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 |


### Bodensee Navigator

[App page](https://appshunter.io/ios/app/bodensee-navigator/id1459511412)

This app provides essential navigation and information for water sports enthusiasts on Lake Constance. It offers details on harbors, weather conditions, water depths, and real-time wind and temperature data. Users can customize their dashboard for a personalized experience.

**Highlights:** Harbor information with fuel stations, Sunrise and sunset times, Current storm warning status, Water depths at harbor entrances, Regatta overview, Minimalist rain radar, Map with nautical charts and protected areas, Real-time wind speeds, Water temperature and level history, Customizable dashboard

**Features:** macOS Compatibility, Apple Wallet

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Spende | $10.00 | one-time |
| Spende | $17.00 | one-time |
| Spende | $35.00 | one-time |
| Spende | $50.00 | one-time |


## Frequently asked questions

### Is OpenSeaMap free?

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

### Is Bodensee Navigator free?

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

### Do OpenSeaMap or Bodensee Navigator have ads?

Neither OpenSeaMap nor Bodensee Navigator shows ads.

### Which is updated more often, OpenSeaMap or Bodensee Navigator?

OpenSeaMap ships an update every 2 months, and Bodensee Navigator every 9 months. Most recently, OpenSeaMap was updated on October 21, 2026 and Bodensee Navigator on September 21, 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.*