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Seapilot vs OpenCPN: catalog facts
Seapilot	OpenCPN
Screenshots	Screenshots
Best for: Recreational boaters who want chart navigation on a phone or tablet	Best for: Sailors who want a full chartplotter on a laptop or onboard computer
Free + paid options Basic is free, Premium costs $39.99, and charts are bought separately except free US charts.	Free Free and open source.
Android, iOS	Windows, macOS, Linux, Android
AIS and NMEA sensor support in Premium Weather routing with GRIB data GPX import and export	Runs on Windows, macOS, Linux, Raspberry Pi and Android Plugin manager with a catalog of community plugins Designed for use at the helm while underway No cost for the software itself
Charts cost extra outside the US Most navigation features require Premium	Desktop-style interface is less suited to phones than dedicated mobile apps Some chart sets must be obtained separately
Downloadable app	Downloadable app
Not open source	Open source
License not stated	License not stated
Not stated if an account is needed	No account needed
Not stated if it works offline	Offline features available
Official website Full listing and sources Sources for Seapilot seapilot.com apps.apple.com/us/app/seapilot/id915818783 Catalog checked September 23, 2026	Official website Full listing and sources Sources for OpenCPN opencpn.org play.google.com/store/apps/details Catalog checked September 23, 2026

“Not stated” means we have not confirmed it. Features can vary by device and plan.

Screenshots