C-MAP Boating gives you a free chart viewer and sells offline maps, bathymetry and AIS in Premium. If you want other charts, more plotter features or something simpler for day trips, these are the options.
1. Navionics Boating
Garmin · 2.9 out of 5 (2,351 ratings)
Boaters who want Navionics charts, SonarChart HD and Plotter Sync
Navionics charts offline with SonarChart HD bathymetry, Auto Guidance+ dock-to-dock routing, weather and tides, markers and tracks, AIS with a Wi-Fi receiver and Plotter Sync.
- Price:
- Yearly subscription by region: Mediterranean & Black Sea $59.99, Adriatic & Ionian Seas $69.99, US & Canada $49.99; free for a limited time
- What it doesn't do:
- Charts and advanced features need the yearly subscription after the free period.
App Store page →2. Aqua Map Boating
GEC s.r.l. · 4.7 out of 5 (13,796 ratings)
Boaters who want official charts and an anchor alarm
Official nautical charts (NOAA in the US) to download for offline use, manual and automatic routes, tracks, tides and currents, anchor alarm, and ActiveCaptain and Waterway Guide points of interest.
- Price:
- Chart subscriptions by area (US nautical and lake charts from $9.99); Expert $14.99 and Master $24.99 on top; 14-day free trial on all subscriptions
- What it doesn't do:
- Expert and Master (forecasts, AIS, NMEA instruments) include no charts: they go on top of a chart subscription.
App Store page →3. Savvy Navvy
Savvy Navvy Ltd · 4.7 out of 5 (8,355 ratings)
Sailors who want routing on tides, depth and weather
Simplified charts from official hydrographic data, routing that accounts for weather, tides and depth, a departure scheduler, AIS data, marine forecasts, tides and currents, and marina and anchorage info.
- Price:
- Free version; Premium $99.00, Premium (US-only charts) $129.00 and Premium Plus (global charts) $169.00 as in-app purchases
App Store page →4. TZ iBoat
Nobeltec, Inc. · 4.6 out of 5 (883 ratings)
Boaters who want a full chartplotter with AIS and radar modules
Chartplotter with TZ MAPS (vector, raster, satellite and bathymetry), wind-aware anchorages, real-time light sectors, weather with offline access, tides and currents, and NMEA, AIS and radar connections.
- Price:
- Free core features; Essential, Premium and Elite plans from $2.99 to $39.99, TZ MAPS charts by area (USA $19.99), AIS module $8.99 and Radar module $49.99
- What it doesn't do:
- Online AIS is in the Essential plan; high-resolution forecasts in Premium.
App Store page →5. iNavX
NavX Studios · 4.8 out of 5 (21,796 ratings)
Cruisers who want charts from several providers in one app
Chartplotter where you buy charts from several providers, including Navionics+ and C-MAP, with routes, track log, GRIB weather, tides, anchor alarm, AIS and NMEA instruments over Wi-Fi.
- Price:
- Free app with NOAA raster charts; other charts from $9.99 to $199.99 a year by provider, weather and AIS Live sold separately
App Store page →6. Scirocco
Simone Ruggiero, Naples (Italy)
Day boaters in the Mediterranean who care most about the sea forecast
No charts: a 7-day hourly marine forecast with the Italian 2 km model where it covers, a route around the coast, waypoint import from fishfinders and boat management.
- Price:
- Free up to 20 waypoints; Pro $24.99/year (7-day free trial) or $3.99/week (3-day free trial)
- What it doesn't do:
- No nautical charts with depths and no AIS.
Download Scirocco free →The only boating app you need
Marine forecast, waypoints, compass, GPS tracks, boat management, maintenance and documents.
Download Scirocco →Prices, features and ratings of the apps come from their US App Store listings on October 20, 2026 and may change: Navionics Boating, Aqua Map Boating, Savvy Navvy, TZ iBoat, iNavX, Scirocco.
C-MAP, Navionics, Aqua Map, Savvy Navvy, TZ iBoat and iNavX are trademarks of their respective owners. Scirocco is not affiliated with, sponsored or endorsed by them.