What's New — Rhumb

Version 1.4

24 October 2026

Try auto-routing and average SOG before you subscribe: you get 3 free routes and 3 free average SOG sessions.
Settings is easier to read. Appearance is a single row, the map data credits have their own page, and Rhumb Instruments and Rhumb Logbook are linked under More from Rhumb. iOS
Settings has a new look. Appearance is a single row, the map data credits have their own page, and Rhumb Instruments and Rhumb Logbook are linked under More from Rhumb. Settings also shows your Premium status correctly now. Android

11 October 2026

Depths on the chart, free and worldwide: shading in bands down to 20 m, contour lines at 2, 5, 10, 20 and 50 m, and soundings. They come from the EMODnet and GEBCO seabed grids. Use them as a guide to the seabed and check them against an official chart.
Route here now finishes the route at once. To add more legs, tap the route and edit it.

9 October 2026

Rhumb Premium starts with a one-week free trial.
Average SOG is now a session. Tap Start averages on the instrument face to begin and Stop to end. The phone uses GPS in the background only while a session is running, and the Background GPS setting is gone. iOS
Average SOG is now a session. Tap Start averages on the instrument face to begin and Stop to end. GPS runs in the background only while a session is running. Android
The COG/SOG readout on the chart shows a soft green outline while a session is running. iOS
Routes stay on the chart after you close the routing tool. Tap a route to fit, edit or delete it. The total distance is shown at the last waypoint. iOS
Routes stay on the chart after you close the routing tool. Tap a route to fit, edit or delete it. The total shows at the last waypoint. Android
The routing button shows a tick while the tool is open. iOS
Tap a marker to edit or delete it.
Place names on the chart are shown in English where available. iOS
Place names are shown in English where available. Android
The COG line and the boat outline are easier to see at twilight.
Apple Watch shows the average SOG only while a session is running on the iPhone. iOS

28 August 2026

Apple Watch: Rhumb now has a watch app. It shows COG, SOG and the average SOG over the last 1 minute, 10 minutes and 1 hour, relayed from your iPhone, and uses the watch's own GPS when the phone is out of reach. A complication on the watch face opens it in one tap. iOS
Settings has a new Apple Watch section that shows whether the watch app is installed. iOS
COG and SOG no longer drift while the boat is moored. iOS
Background GPS keeps running through long stops at anchor, so the average SOG stays complete. iOS
New chart basemap: Rhumb now draws its own vector basemap (coastlines, land, water names) with the OpenSeaMap seamarks on top. It is sharper at every zoom level and uses less data. Android
The average SOG row shows a countdown while it is still warming up.
Privacy policy, terms, support and map credits open inside the app. iOS
Privacy policy, terms and support pages open inside the app. Android

9 July 2026