What's New — Rhumb Instruments

Version 1.4

26 October 2026

Rhumb Instruments is now free to download. COG and SOG are free, and every install gets 3 free average SOG sessions. Instruments Premium opens every session after that, with one payment.
If you bought Rhumb Instruments before, the averages stay unlocked for you.

24 October 2026

Average SOG is now a session. Tap Start averages to begin and Stop to end. GPS runs in the background only while a session is running. Android
Settings is easier to read. Appearance is a single row, and Rhumb and Rhumb Logbook are linked under More from Rhumb. iOS
Settings has a new look. Appearance is a single row, and Rhumb and Rhumb Logbook are linked under More from Rhumb. Android

9 October 2026

Average SOG is now a session. Tap Start averages 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 to begin and Stop to end. GPS runs in the background only while a session is running, and the Background GPS setting is gone. Android
Apple Watch shows the average SOG only while a session is running on the iPhone. iOS

28 August 2026

Apple Watch: Rhumb Instruments 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
The average SOG row shows a countdown while it is still warming up.
The settings button follows the face colours, including red at night.
Larger layout on iPad. iOS
Larger layout on tablets. Android
Website, privacy policy and support pages open inside the app, and Rhumb, the sea chart app, is linked from Settings. iOS
Website, privacy policy and support pages open inside the app. Android

29 July 2026