SEAiq is a full-featured marine navigation app.

It is the only marine navigation app that allows you to load your own charts in a variety of standard formats, including: S-57, S-63, iENC, BSB, and KAP. It also includes the ability to automatically download charts from NOAA for the USA and download of raster charts based on satellite imagery.

Other features include:
* Waypoints
* Routes
* Tracks
* Night color modes
* Anchor alarm
* Automatic download and display of weather (wind & isobar)
* Chart measuring tools (EBL/VRM)
* WiFi-based NMEA and AIS

No purchase is required to use SEAiq to view charts. All features are enabled during a 7-day evaluation period. After that, many of the features require purchase of an in-app upgrade.

Continued use of GPS running in the background can dramatically decrease battery life.

What’s New

Version 5.0.15

* Minor improvements and fixes

Ratings and Reviews

4.6 out of 5
96 Ratings

96 Ratings

PVcat ,

“THE BEST”!!!!!

I have been using SeaIQ for 2 years now. It was used to sail from fort Pierce to the Bahamas loading all Explorer charts (Raster). Then later loading all my vectors charts used on OpenCPN we sailed from the Bahamas to Cayman, Guatemala. Just had some issue with some S-63 charts - but I have the same issue with OpenCPN. The app is very intuitive and easy to learn. We are using it more now than our laptop and as a substitute to our Navionics chartplotter where some charts are unreliable. So far it is the best app for navigation. they could get all stars if I could use better Pacific Charts or my old CM-93 charts that are better than what their charts suppliers are selling! Simply “THE BEST”

fiberman-67 ,

Well thought out

This the best nav software by far. It is ready apparent that it is coded by people who use it, and really know software. Navionics, TZiBoat, iNavX, this one is far better and its free no nonsense goodness! It does have few obtuse bits like downloading charts the first time. The chart updater is great. Thanks for the good coding!

Cooper-4-1-6 ,

Miserable chart downloader

Downloads, at least from the NOAA site, are excruciatingly slow in comparison to direct downloads from the site. Plus the app needs to be on screen with the iPad awake for downloads to complete. Any switching away can cause one or more chart downloads to fail, and you, rather than the app have to retry the update to pick up the missed charts. Lazy software design yields a poor user experience. The premium features would be worth the money but presumably the quality of the free version matches that of the paid version so no thanks.

App Privacy

The developer, Sakhalin, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.

Data Not Collected

The developer does not collect any data from this app.

Privacy practices may vary, for example, based on the features you use or your age. Learn More


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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