IPhone2SignalK

Kompass, GPX & Ankerwache

Free · Designed for iPad. Not verified for macOS.

Position display, GPX tracker and anchor watch — local or remote. Multiple input sources, connect to Signal K and NMEA. iPhone2SignalK turns your iPhone into an instrument source for Signal K and NMEA, with GPX tracks, anchor watch and widgets. COMPASS The compass rose runs whenever compass is enabled, even if you are not sending. Choose heading, pitch, roll and position. Speed over ground (SOG) is sent by default and shown in knots beside the rose. Optionally show or send ERA, COG and wind (including apparent). CONNECTIVITY UDP JSON (Signal K), NMEA over UDP or TCP, optional HTTP PUT. Multiple destinations, typically port 10110. Auth tokens are stored in the Keychain. GPX & MAPS Record tracks with a chosen point interval, add waypoints, review stats (days/ranges, combined map, save as one GPX). Play saved tracks on the map even without Signal K; position slider, pause and resume. View on OpenStreetMap, OpenSeaMap and Apple Maps (standard/satellite/hybrid). Optional Google tiles with your own Map Tiles API key and offline MBTiles (you import them; licensing and rights are yours — the developer does not provide charts). Zoom is remembered; Tracks has zoom 100 m–100 km, Center boat, 2D/3D (tilt is kept) and North/Course. ANCHOR WATCH Drop an anchor mark and nudge it with arrow buttons. Chain length and optional manual water depth. Alarm circle, persistence across restarts, rising sound, flashlight, vibration and notifications. Your track is drawn on the map. Live Activity on Lock Screen / Dynamic Island. REMOTE ANCHOR WATCH (optional) Second device with a different Apple ID: master creates a QR code (iCloud/CloudKit); follower scans or picks a photo. Receiver shows map, distance and alarm also in the background (polling); control only on the master. Allow Live Activities and notifications. Both devices need iCloud. WIDGETS Home Screen widgets for GPX track (recording, time, distance) and anchor watch (status, distance, radius). NOTES The developer does not collect any data (no developer server, no tracking, no analytics). In-app language: System, German or English. Changing language does not stop a running recording. For background sending, GPX and anchor watch, allow Location Always. Compass and GPS need a real iPhone. Data is sent only to servers you configure. Remote watch uses only your app’s Apple iCloud container. HOBBY PROJECT A private hobby project, written for personal use and shared freely. The developer does not collect any data. No warranty and no guarantee of correctness or future updates. Use entirely at your own risk — the app does not replace navigation or a proper watch. Feedback is welcome, with no entitlement to a reply or changes. Free, with no ads and no in-app purchases.

Ratings & Reviews

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• Tracks: 2D/3D and North/Course when centering the boat; zoom 100 m–100 km • Offline MBTiles: smooth zoom beyond stored tile levels • GPX replay on the map even without Signal K; scrub, pause and resume • Map cache, MBTiles and Google key under Settings → Maps & Tracks • Offline maps: licensing and rights are yours; the developer does not supply charts

Version 1.6

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

  • Data Not Collected

    The developer does not collect any data from this app.

    Privacy practices may vary, for example, based on the features you use or your age. Learn More

    Accessibility

    The developer has not yet indicated which accessibility features this app supports. Learn More

    Information

    Seller
    • thorsten albers
    Size
    • 3.1 MB
    Category
    • News
    Compatibility
    Requires iOS 18.0 or later.
    • iPhone
      Requires iOS 18.0 or later.
    • iPad
      Requires iPadOS 18.0 or later.
    • Mac
      Requires macOS 15.0 or later and a Mac with Apple M1 chip or later.
    Location
    • This app may use your location even when it isn’t open, which can decrease device battery life.
    Languages
    • English and German
    Age Rating
    4+
    Copyright
    • © 2026 Thorsten Albers
  • Privacy Policy