Compare software

OrcaqtVlm

Screenshots

Nautical chart view with buoys and depth contours and a bottom bar for routing, search, weather and instrumentsRoute planning screen with a sailing route, waypoint options, departure time and distanceWind forecast map of northern Europe with an hourly wind and gust table below

Screenshots

qtVlm nautical chart of the Loire estuary with a boat track, compass and instrument readouts

Best for: Sailors wanting a modern app-based chartplotter

Best for: Cruising and racing sailors who plan routes around weather

Free + paid options

App pricing is not detailed here; Core and Display hardware are sold separately.

 Free + paid options

The GRIB viewer is free; mobile and tablet apps, chart packs and the GRIB service are paid.

Android, iOS Windows, Android, iOS
  • Sail routing with automatic rerouting
  • Weather routing built into trip planning
  • Can connect to boat instruments through Orca Core
  • Weather routing with departure-time comparison
  • Reads S57, S63, raster and MBTiles charts
  • AIS and NMEA instrument support
  • Iridium GO certified
  • Full chartplotter features need separately purchased hardware
  • Pricing for app features is not clearly stated
  • Mobile versions and chart packs are paid
  • Wide feature set takes time to learn
Downloadable app Downloadable app
Not open source Not open source
License not stated License not stated
Not stated if an account is needed Not stated if an account is needed
Not stated if it works offline Not stated if it works offline

Sources

Catalog checked September 24, 2026

Sources

Catalog checked September 24, 2026

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