Nostos

Content rating
Everyone
1+
Downloads
Content rating
Everyone
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About this app

Nostos is a clean, practical companion for planning and sailing your trips in Greek and Mediterranean waters.

PLAN
• Tap the map to build a route with waypoints and anchorages
• Live distance, estimated time and trip duration (days/nights)
• Sea depths from open data (EMODnet) + seamarks (OpenSeaMap)
• Weather, wind and wave forecasts at each stop (Open-Meteo)
• Restaurants, beaches and sights along the way (offline database)
• Land-crossing warnings so a leg never cuts across an island

NAVIGATE
• Live position, heading (course-up) and speed
• Course line projected ahead + course-over-ground in degrees
• Next-waypoint ETA computed from your live speed
• Manual re-centre — pan freely, tap to return

DEPTHS
• Automatic depth readings when zoomed in
• Long-press anywhere for an estimated depth
• Optional: read real live depth from your boat's NMEA sounder over WiFi

MORE
• Save trips, calendar, cloud sync (optional sign-in)
• Downloadable region packs across the Mediterranean
• Greek/English, light/dark theme, metric/imperial units

Depth data from open sources is an estimate, not an official survey — always navigate prudently.
Plan and navigate your sailing trips - maps, depths, weather, waypoints.
Updated on
Sep 23, 2026

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
  • No data shared with third parties
    Learn more about how developers declare sharing
  • No data collected
    Learn more about how developers declare collection
  • Data is encrypted in transit
  • You can request that data be deleted

What’s new

First release of Nostos — your sailing-trip planner and navigation companion. Plan routes on an interactive nautical map, follow live GPS navigation (heading, speed, ETA), check depth estimates and weather, and manage your trips.