IPhone2SignalK
Kompass, GPX & Ankerwache
Free · Designed for iPad. Not verified for macOS.
Record your track with wind & boat data. Anchor watch local or remote on a second Apple device. On-board weather routing. Send & receive data to Signal K & NMEA.
iPhone2SignalK turns your iPhone into a navigation and instrument source for Signal K and NMEA — with tracks, anchor watch (including remote) and on-device weather routing.
COMPASS & INSTRUMENTS
The compass rose runs with compass enabled, even when not sending. Choose heading, pitch, roll and position. SOG is sent by default. Optional ERA, COG and wind (including apparent). Analog instrument with SOG scale and windex; depth and wind from receive even without your own recording.
CONNECTIVITY
Send and receive data over UDP (Signal K JSON or NMEA), optional NMEA over TCP and HTTP PUT. Multiple destinations, typically port 10110. Tokens in the Keychain. Receive depth and wind from plotter/instruments without sending — or send iPhone GPS and compass to Signal K / OpenPlotter.
GPX & TRACKS
Record tracks including available boat data (e.g. wind, depth, heading) when received or measured. Waypoints, stats, map replay. OSM, OpenSeaMap, Apple Maps; optional Google tiles (your Map Tiles key) and offline MBTiles (you import — licensing is yours). Optional wind overlay on Tracks (same styles as Routing).
ANCHOR WATCH
Local watch with alarm circle, persistence, Live Activity and notifications. Optional remote anchor watch on a second Apple device (different Apple ID): master shares via QR (iCloud/CloudKit); follower sees distance and alarm in the background. Control only on the master; both devices need iCloud.
WEATHER ROUTING
Routing tab: start/destination (optional vias), boat polar, isochrones or Dijkstra — computed locally on the device. Weather from NOAA/OpenGribs/DWD/Open-Meteo; optional SailDocs by email and GRIB import; wind/waves/currents cached separately; optional GEBCO, OSM coastline and inland water. No-go zones and custom land/water zones. After a find: smooth or re-route, depth check. Optional tide curve when tidal range exceeds 1 m. A planning aid — not a chart and not a substitute for navigation.
WIDGETS
Home Screen widgets for GPX track and anchor watch.
NOTES
The developer does not collect data. Routing/GEBCO/tide are on-device model data. Allow Location Always for background features. Free, no ads, no in-app purchases. Use at your own risk.
HOBBY PROJECT
Private hobby project. No warranty. Feedback welcome, with no entitlement to a reply or changes.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
• Routing tab: on-device weather routing (isochrones/Dijkstra) with boat polars
• Weather from NOAA / OpenGribs / DWD / Open-Meteo; optional SailDocs email, GRIB import, Copernicus currents and GEBCO
• OSM coastline/inland water, no-go zones and custom land/water zones; wind overlay; saved routes; cancel calculation
• Clear messages when no route is found; optional tide curve when tidal range > 1 m
• Tracks: wind overlay like Routing; recording includes boat data (wind, depth, …)
• Boat profile/polar in Settings; help and credits updated
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.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- thorsten albers
- Size
- 17.4 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.
- iPhone
- 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+
- 4+
- Contains
User-Generated Content
- Copyright
- © 2026 Thorsten Albers