NavCast NMEA Server & Splitter

Content rating
Everyone
50+
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Content rating
Everyone
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About this app

NavCast is an NMEA 0183 server and multiplexer for Android. It receives navigation data from GPS, AIS receivers, and marine instruments, then rebroadcasts it to other devices on your boat network.

Key features:

• Multiple inputs — Device GPS, Bluetooth SPP, USB serial (FTDI, Prolific, CP210x, CH340), and TCP client
• Multiple outputs — TCP server, TCP client, UDP broadcast, and Bluetooth server
• Sentence monitor — live view of NMEA sentences flowing through the router
• Auto-start — optionally start routing when the app launches
• Background service — keeps routing active when the app is minimised
• Zero configuration — sensible defaults, just connect and go

Use cases:

• Share your phone's GPS with a chart plotter or navigation app on another device
• Multiplex a Bluetooth AIS receiver to multiple chart plotters over WiFi
• Bridge USB serial instruments to wireless devices
• Feed NMEA data from a TCP source to Bluetooth or USB outputs

NavCast connects to standard marine electronics via NMEA 0183 over Bluetooth SPP, USB serial, or WiFi/LAN. No account required. No telemetry. All data stays on your device.
Updated on
Jun 18, 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
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No data collected
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What’s new

Bug fixes & stability
- Resolved a crash that could occur when connecting a USB device (NMEA
input or output) on Android 14 and 15, including recent Galaxy models.
- Resolved a crash that could occur when starting the router after the
location permission was declined.
- Improved background service reliability, ensuring the app handles
unavailable location permissions gracefully rather than terminating
unexpectedly.
Content rating
Everyone
Shares Location
Learn more

App support

Phone number
+447398462887
About the developer
Gregor Lawson Kean Nelson
gnelson684@gmail.com
Lesmurdie House Lower Cabrach HUNTLY AB54 4EU United Kingdom