OpenSeaMap viewer for Apple devices

OpenSeaMap. In an app you’ll enjoy using.

OpenSeaMap is excellent. Finding a clear, polished viewer for all your Apple devices has still been harder than it should be. Rivers & Seas brings the open nautical map to iPhone, iPad, and Mac—with your own places right on the map.

OpenSeaMap and a color-shaded marine depth map in Rivers & Seas on an iPad.

The open nautical map—without the browser feel

Sea marks, harbors, and the coast on a map made for getting out there.

Rivers & Seas combines OpenSeaMap’s nautical information with the familiar OpenStreetMap base map. Channels, buoys, lights, harbors, and many other useful details appear right where you need them.

A better way to use OpenSeaMap

Pan and zoom smoothly, follow your position, and switch between clear light and dark map styles.

Just as useful ashore

Roads, paths, places, and rich OpenStreetMap detail make Rivers & Seas useful during a stop ashore—or even when no boat is involved.

Make the map your own

Add the places, photos, and notes that matter to you without turning the map into clutter.

Rivers & Seas on an iPad showing OpenSeaMap sea marks and OpenStreetMap detail ashore.

More than an OpenSeaMap viewer

Marine depths you can understand at a glance.

For marine and coastal areas, Rivers & Seas also offers a depth-focused map with color-shaded water, depth contours, and spot depths. Shallow areas stand out immediately while sea marks and current boat data remain visible.

The depth view is available for marine and coastal areas. It supports orientation but does not replace official nautical charts or safe navigation.

A coastal map in Rivers & Seas with water depths, depth contours, shading, and sea marks.

Places no map can choose for you

Remember anchorages, restaurants, and discoveries—right on the map.

A peaceful spot, a tricky passage, or the restaurant for your next stop ashore: place a bookmark directly on the map and add a name, notes, photos, a symbol, and tags. Filter your places so the map shows exactly what matters right now.

  • Your own photos make important places instantly recognizable
  • Tags keep anchorages, navigation, restaurants, and day trips organized
  • Import existing collections or share individual places with others
Rivers & Seas on an iPhone with colorful bookmarks and personal photos on the map.

Save it once. Find it everywhere.

Your bookmarks on Mac, iPad, iPhone, and Apple Watch.

Plan comfortably on Mac or iPad, take your places along on iPhone, and see nearby bookmarks in the compass on Apple Watch. Rivers & Seas keeps your collection in sync through iCloud—without exporting, copying, or maintaining it twice.

Apple Watch showing the Rivers & Seas compass and a nearby bookmark.

Try it now

Take OpenSeaMap with you—across all your Apple devices.

Rivers & Seas is in active development and available now as a free public beta through TestFlight.

Install the Rivers & Seas beta