Abeam: NMEA & Signal K

Sailing instruments and chart

Free · In‑App Purchases · Designed for iPad. Not verified for macOS.

Wind, speed, depth, heading and AIS from your boat's instruments, on your iPhone and Apple Watch. Abeam shows your boat's NMEA or Signal K Wi-Fi data in a chart view or an instrument view. The instrument view is drawn like marine instrument displays: wind gauge and large-number pages. The chart view shows live true and apparent wind direction, and AIS targets with all of their broadcasted information. It also includes an off heading alarm, anchor alarm, historical graphs for all data, Dynamic Island, Live Activities and an Apple Watch app. Abeam is free. It is a side project: I wanted a better app for my own boat, so I built this one. If you find it useful, there is a Buy Byron a Pint button in Settings. Chart view • Live true and apparent wind direction. • AIS targets with name, course, speed, CPA and TCPA. AIS alarm. • Anchor watch with drag alarm. Instruments • Wind gauge, apparent and true. • Heading, COG and wind shift. • Average heading, average COG, average wind direction. • SOG with the difference from STW. • Current set and drift. • Speed, depth, water temperature, trip log, race timer. • All fields customizable. Graphs for all data. • Night mode. Alarms • Anchor drag, off heading, AIS, watch timer. Lock Screen and Apple Watch • Live Activity on the Lock Screen and in the Dynamic Island with the fields you choose. • Apple Watch app with the same fields. Battery • Phone GPS and background updates are off by default. Supported connections (over the boat's Wi-Fi) • NMEA 0183 over TCP or UDP • NMEA 2000 gateway • Signal K server

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The developer, Byron Coughlin, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .

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    Information

    Seller
    Byron Coughlin
    Size
    21.3 MB
    Category
    Navigation
    Compatibility
    Requires iOS 26.0 or later.
    • iPhone
      Requires iOS 26.0 or later.
    • iPad
      Requires iPadOS 26.0 or later.
    • Mac
      Requires macOS 26.0 or later and a Mac with Apple M1 chip or later.
    • Apple Vision
      Requires visionOS 26.0 or later.
    • Apple Watch
      Requires watchOS 26.0 or later.
    Location
    This app may use your location even when it isn’t open, which can decrease device battery life.
    Languages
    English
    Age Rating
    4+
    In-App Purchases
    Yes
    Copyright
    © 2026 Byron Coughlin
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