CompassProof

CompassProof is a mobile app (iOS/Android) that helps users verify whether their phone’s compass heading is trustworthy in the real world. Instead of just showing a heading, it runs a short “environment check” that detects magnetic interference patterns (from cars, rebar, speakers, power tools) and grades the current location with a confidence score. It guides users through a 20–30 second calibration routine, then continuously monitors drift and sudden bias changes while navigating. The app can log “bad compass zones” and let users mark them (parking garages, trailheads, boat decks) so they know where readings become unreliable. It also offers a simple offline heading mode for hikers/boaters and exports logs for incident review. This is not magic: it won’t fix a broken sensor, but it will stop users from blindly trusting garbage headings.