Observed arrival · 2026-11-04
KeepNav: navigation for when GPS lies
KeepNav describes an offline navigator that checks satellite signals and estimates your position from other evidence when GPS is unreliable.
- For
- Drivers in Ukraine facing GPS interference
- Worth noticing
- It lists horizon checks, Doppler, signal timing, OBD-II speed, gyroscope, and road-graph matching as verification or fallback inputs.
Field notes
The homepage describes satellite checks for signals that conflict with expected visibility, Doppler, timing, or one another, then falls back to vehicle speed, gyroscope, road graph, and the active route. It says dead reckoning is typically within 10–40 m after ten minutes without GPS, and lists OBD-II or a wheel sensor as speed inputs. Offline Ukraine routing is described as covering Kyiv and 21 regional centres; the Android app is presented as a beta, while the App Store download is marked for later.
Observed signals
Read the marks
Editorial observations of this landing page, not a rating.
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