Boating Apps: 9 Best for Navigation, Weather and Tides

The best boating apps today do far more than show a blue dot on a chart. They plan a route around shallows, check the tide before you leave the dock, warn you when the wind shifts, and wake you up if the anchor drags at 3 a.m. Savvy Navvy is the strongest all-round pick for most recreational boaters, Navionics remains the natural choice if you already run a Garmin chartplotter, and OpenCPN is the serious free option for anyone willing to set it up.

The trouble is that most boating navigation apps look alike in the app store. Every one of them promises charts, routes and weather, and the differences only show up once you are on the water: how the route reacts to the tide, whether the charts work without signal, and what happens to your alarms when the phone screen goes dark.

This guide compares nine apps on exactly those points, so you can pick one for the way you actually use your boat.

Our Top Picks at a Glance

How We Evaluated These Apps

We judged every app on four things that decide whether it earns a place on your phone.

Charts. Where the chart data comes from, whether it is updated, and whether you can download it for use without mobile signal.

Routing. Whether the app plans a route for you, and whether that route considers tide, weather, depth and your own boat.

Weather and tides. How much forecast detail you get on the chart itself, and whether the app keeps watching the weather once you are underway.

Safety tools. Anchor alarms, man overboard, AIS and anything else that keeps working when you are not looking at the screen.

Every feature listed below comes from the developer's own documentation or store listing. We have left subscription costs out on purpose, because they change often and vary by region.

#1 Top Pick: Savvy Navvy

Savvy Navvy describes itself as a boating app built to replace a stack of separate tools, and that is the best reason to choose it. Its own store listing pitches it as one app instead of Navionics, C-MAP, Windy and PredictWind together, and the company says more than 3 million boaters use it.

The charts are deliberately simplified. Savvy Navvy licenses its sea and lake maps from hydrographic offices such as NOAA, then removes detail it considers clutter so the essentials stay readable on a phone in bright sunlight. Experienced navigators may miss some of that detail; newer skippers usually find it easier to read.

Routing is where it pulls ahead. Smart routing calculates a route and a dynamic ETA from your departure time, the chart, the weather, the tide, your boat's specifications and local regulations. A departure scheduler lets you scroll through departure times and watch the route change, so you can pick the hour when the tide works with you instead of against you.

Weather, waves and offline use

In April 2026 Savvy Navvy added a waves layer built on Copernicus Marine data. It combines wave height, period and direction into a colour-coded comfort view, which the company announced through British Marine as a way to judge how conditions will actually feel on board. A long swell and a short, sharp chop can share the same height and feel completely different, and this layer shows that difference.

For trips beyond coverage, Savvy Offline downloads chart packs and weather data to the device. Other tools include an anchor alarm, marina and anchorage information, over-the-horizon AIS, route export, and NMEA Connect for reading data from instruments on board.

Pros: route planning that accounts for tide and weather, a clean interface, and a free version to try before upgrading.

Cons: simplified charts carry less detail than Navionics or C-MAP, and the full feature set sits behind a subscription.

Ideal for: coastal sailors and motorboaters who want one app for planning and navigating, and who would rather not juggle a separate tide and weather app.

#2 Navionics Boating: Best for Garmin Owners

Navionics has been part of Garmin since 2017, and the Navionics Boating app is now the mobile half of Garmin's marine ecosystem. It offers detailed nautical charts with HD bathymetry, route planning with automatic routing, distance measuring and waypoints.

Weather sits directly on the chart. According to Garmin's product page, the app shows daily and hourly forecasts plus wind, weather buoys, tides and current overlays.

The plotter sync feature is the real reason to choose it. It wirelessly transfers routes and markers, and updates chart layers, between the app and a compatible Garmin chartplotter, as long as you hold active Navionics subscriptions covering the same areas on both. You can also send GPX files from your phone to other devices.

A connections feature lets you share your location with friends and family for up to 24 hours, along with tracks, routes and markers.

Pros: detailed charts and bathymetry, tight Garmin integration, and a familiar name with wide coverage of inland lakes and coasts.

Cons: the best features depend on regional chart subscriptions, and its strengths matter most if you already own Garmin hardware.

#3 Orca: Best for Fast, Modern Navigation

Orca, from Norway, set out to combine the feel of a modern app with the reliability of a chartplotter. The app runs on phones, tablets, watches and laptops, and syncs spots and routes between them.

The free version is unusually generous. As Orca's own announcement explains, free users get online charts, satellite hybrid charts for harbour approaches, automatic routing, internet AIS, weather forecasts, a man overboard function, and a Safety Hub that shows the nearest search and rescue centre and lets you contact it from the app.

Orca keeps watching the weather while you are underway and sends an alert if the forecast changes, which is exactly when you need to know.

Paid plans add offline charts, a sail routing mode that uses your boat's polar diagram, and automatic rerouting that recalculates your route when you drift off it. The optional Orca Core box connects to the boat's NMEA 2000 network, adds its own GPS and compass, and brings depth, AIS targets, wind and autopilot control into the app.

Ideal for: boaters who want quick routing and a polished interface, with a path to a full chartplotter setup later.

#4 Aqua Map: Best for Official NOAA Charts

Aqua Map is built around weekly updated official NOAA charts, which makes it a strong choice for US coastal and inland waters. You can switch between manual and automatic route planning, record GPS tracks, and display tide and current predictions directly on the chart.

Its weather layer covers wind, waves, currents, gusts, salinity and sea surface temperature for any point on the map, with a 40 hour forecast.

Anchor monitoring is its standout tool. The Aqua Map overview describes AnchorLink, which mirrors the anchor alarm to another device and sends email or Telegram notifications, so you can watch your boat's position even when you are ashore.

A Wi-Fi NMEA connection brings AIS, depth and an external GPS into the app. Aqua Map works on a pay-for-the-charts-you-need model, with a free trial on all subscriptions, and without a chart subscription you do not get the detailed official charts.

Ideal for: US boaters, liveaboards and anyone who spends nights at anchor.

#5 TZ iBoat: Best for Advanced Users and Anglers

TZ iBoat comes from TimeZero, whose navigation software also runs on Furuno NavNet TZtouch displays. For years it was iPhone and iPad only; TZ iBoat 4 brought it to Android in June 2026.

Its TZ MAPS format blends raster and vector charts with land detail and satellite photos. Route Assist fills in a route between your start and end points while avoiding obstructions, and you can still drag waypoints and watch the route update.

Two features stand out. Dynamic Moorings classifies nearby anchorages by forecast wind and topography, colour-coded red, orange and green for comfort. Dynamic Lights shows only the navigation light sectors visible from your position, flashing as they would at night.

Its alarms keep running in the background. Anchor watch, depth alarm and wind speed alarm continue when the screen is off or you switch apps, which is not true of every phone navigation app.

Anglers get optional oceanographic layers: sea surface temperature, sea surface height, chlorophyll concentration and currents. Furuno owners can even display a sounder image.

Ideal for: experienced skippers, sport fishers and Furuno owners who want chartplotter depth on a tablet.

#6 C-MAP: Best for Bathymetry and Depth Detail

The C-MAP app runs on phones, tablets and PCs. The free tier lets you explore charts, plan and save routes and points of interest, measure distances and share waypoints with friends.

The premium tier is where C-MAP earns its place. It unlocks full GPS navigation, offline map downloads, REVEAL shaded relief, high resolution bathymetry and custom depth shading, plus AIS and C-MAP Traffic. A recent update added an improved routing feature and redesigned key screens.

Shaded relief is the reason to pick it. If you fish structure, dive, or anchor in unfamiliar bays, seeing the seabed as a three-dimensional surface tells you far more than contour lines alone.

Ideal for: anglers and divers, and boaters whose chartplotter already uses C-MAP cartography.

#7 OpenCPN: Best Free Chartplotter

OpenCPN is free, open source chartplotter software that runs on Windows, Mac, Linux, Raspberry Pi and Android. It is designed to be used at the helm while underway, and its developers say thousands of boaters already use it as their main navigation tool.

It does not ship with charts. The OpenCPN chart manual explains that it reads raster charts and vector formats such as S-57, S-63 and CM93, and that a Chart Downloader plugin installs the free NOAA chart sets and other free hydrographic office charts. Licensed charts for other regions are sold separately through o-charts.

Plugins turn it into almost anything. More than 40 independent plugins exist, including a weather routing plugin that builds isochrone routes from GRIB forecasts or climate data and your boat's performance figures.

Cons: it takes time to set up, the interface is functional rather than friendly, and the phone experience lags behind the desktop.

Ideal for: tinkerers, long-distance cruisers on a budget, and anyone who wants full control over their navigation software.

#8 PredictWind: Best for Offshore Weather Routing

PredictWind is a weather tool first and a chart app second, which is why it often sits beside one of the apps above rather than replacing it.

Its weather routing takes your start and end points and calculates a route that avoids rough seas, strong winds, land and shallow water, factoring in tides, currents, wind, waves and depth. You can compare the route from each of six forecast models, which shows at a glance how confident the forecast really is.

For longer passages it uses the ECMWF ensemble forecast to project 34 days ahead. If you enter your boat's dimensions, its wave modelling estimates how your hull will interact with the forecast seas. The offshore app downloads GRIB files, weather routes, GMDSS maps, text forecasts, AIS data and satellite imagery over slow connections.

Ideal for: bluewater sailors and anyone planning multi-day passages where the weather window is the whole decision.

#9 Primo Nautic: Best for Watching a Boat From Shore

The eight apps above live in the cockpit. This one is for the other side of the trip: the boat owner checking on a moored yacht from home, or the family following a passage from land.

Primo Nautic is a vessel tracker, not a chartplotter, so it will not route you around a sandbar. If your boat transmits AIS, you can find it by name or MMSI number and see its live position, speed and course, the weather at that exact spot, and arrival and departure alerts. Choosing the "My Own Boat" purpose turns those updates into practical, technical notes; choosing a family purpose turns the same data into calm, plain-language progress reports for people ashore.

Ideal for: owners who want to check on their boat remotely, and partners or parents who want to know where the boat is without learning to read a chart. If remote monitoring is your main need, our guide to boat tracking apps goes deeper.

What to Look for in Boating Apps

Use these criteria to narrow the list to one or two apps that fit how you boat.

• Chart source and updates. Official hydrographic data, such as NOAA charts, updated regularly, matters more than a polished interface.
• Offline charts. If you boat beyond reliable mobile coverage, offline downloads are essential, and several apps keep them behind a paid plan.
• Tide and weather aware routing. A route that ignores the tide can be accurate on paper and wrong on the water. Savvy Navvy, Orca and PredictWind all build conditions into the route.
• Background alarms. An anchor alarm that stops when the phone sleeps is worse than none, because it creates false confidence.
• Hardware integration. If you own a Garmin, Furuno or NMEA 2000 network, the app that talks to it will save you the most effort.
• Weather depth. Casual day boaters need wind and rain; offshore sailors need wave period, multiple models and long-range forecasts. Our guide to choosing a marine weather app covers that choice in more detail.

Free Boating Navigation Apps Worth Trying

If you want to start without a subscription, three options stand out. OpenCPN is completely free and, with free NOAA charts, is a genuine navigation system rather than a demo. Orca's free app includes online charts, automatic routing, AIS and weather. Savvy Navvy, Navionics, C-MAP and TZ iBoat all offer a free version or trial, so you can test the interface on your own waters before committing.

Whichever you choose, treat a phone as one layer of navigation, not the only one. Batteries run flat, phones overheat in direct sun, and mobile signal disappears offshore. A second device with downloaded charts is the simplest backup you can carry.

Conclusion

No single boating app wins for every skipper. Savvy Navvy is the best all-round choice for recreational boaters who want routing that respects tide and weather. Navionics fits best if you already run Garmin electronics, and Orca offers the most capable free app with fast automatic routing. Aqua Map suits US waters and nights at anchor, TZ iBoat and C-MAP reward experienced users and anglers, OpenCPN gives you a full chartplotter for free, and PredictWind is the weather companion for longer passages.

Pick one navigation app as your main tool, add a weather app if you sail offshore, keep a backup device with offline charts, and test any app in familiar water before you trust it somewhere new.