Comparison

OpenSeaMap vs Bodensee Navigator

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

OpenSeaMap

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
Read full description

OpenSeaMap is a worldwide Opensource-project for creating a free nautical chart. Founded in 2009 the project gained a lot of attention lately adding more and more nautical information for free. Not even lights and other nautical infos are provided, but also more and more info layers like weather data, information about harbours and so on. As an add on to the OpenStreetMap this provides all missing info for nautical activities. OpenSeaMap is part of OpenStreetMap and uses the same database. FEATURES: - Free worldwide sea chart (incl. HD chart graphics) - Search for geolocations worldwide - Chartplotting with continuous tracking - Waypoints can easily be created, edited, deleted & exported - Mark locations in the chart - Zoom chart optically to fit your preferred reading size - Enter coordinates directly to be displayed in the chart - Offline caching of up to 1 million map tiles - Cleanup of chart cache data at any time To ensure future development and support of the OpenSeaMap app we encourage you to buy the In-App-Product "PRO". This will help keeping new updates and features coming. DISCLAIMER: OpenSeaMap is part of the OpenStreetMap and uses the same database. As an experienced navigator you should NEVER rely your descisions on one source of information alone. Please keep in mind that the OpenSeaMap can not replace official sea charts on bord of your boat. Please use the OpenSeaMap app only in conjunction with official sea charts and conforming to national and international regulations. Please recognize that no depth information is provided by this product. IMPORTANT: The continued use of the GPS can significantly decrease the battery level.

About

Bodensee Navigator

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
Read full description

Für wen ist diese App interessant? Bist du Segler, Motorbootfahrer, betreibst einen anderen Wassersport oder gehst gerne im See schwimmen? Dann ist diese App für dich! Was bietet dir der Bodensee Navigator? - sämtliche Informationen über die Häfen am Bodensee mit Seetankstellen - Zeiten des Sonnenaufgangs und -untergangs - die aktuelle Sturmwarnsituation - Wassertiefen der Hafeneinfahrten - Übersicht über momentane Regatten - ein minimalistisches Regenradar - eine Karte mit allen Wasserzeichen, Schutzgebieten und Häfen (OpenSeaMap) - die aktuellen Windgeschwindigkeiten von über 30 Orten am Bodensee - ein aktueller Verlauf der Wassertemperatur in Arbon, Kressbronn, Bregenz und Lindau - den Verlauf des Wasserstands (Pegel Konstanz, Romanshorn, Bregenz, Radolfzell und Berlingen) - diverse Einstellungsmöglichkeiten, um dein persönliches Dashboard zu erstellen - keine Wettervorschau (dafür gibt es schon genug Apps)

Screenshots

OpenSeaMap4 screens
Bodensee Navigator4 screens

Verdict

The call

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.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

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.

UpkeepUpdate frequency

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.

Scorecard3 real differences · 7 level
OpenSeaMap versus Bodensee Navigator: the parameters behind the verdict, then further details
ParameterOpenSeaMapBodensee Navigator
PriceFreeFree
Rating1.0 (1 ratings) — better—
Positive reviews38.3% of reviews83.3% of reviews — better
Number of ratings1 — better—
Update frequencyEvery 2 months — betterEvery 9 months
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS18.615.6 — better
Further details — not scored
Size13 MB61 MB
Age rating4+4+
Developerappdoctors UGJoscha Eckert

Customer experience

OpenSeaMap

All ratings1 ratings
Positive0.0%
Neutral0.0%
Negative100.0%
Written reviews47 reviews
Positive38.3%
Neutral12.8%
Negative48.9%

Bodensee Navigator

Written reviews12 reviews
Positive83.3%
Neutral8.3%
Negative8.3%

In-app purchases

1 purchases

OpenSeaMap

One-time1
  • OpenSeaMap Professional$1.99
4 purchases

Bodensee Navigator

One-time4
  • Spende$10.00
  • Spende$17.00
  • Spende$35.00
Show 1 more
  • Spende$50.00

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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