Altimeter: Hike & Ascent Log

Live altitude, elevation gain, climb history, and summit cards. Works offline with no ads, accounts, or tracking.

See your altitude the moment you open the app. Record every meter you climb. Works with no signal at all.

REAL-TIME ALTITUDE · A huge, sunlight-readable number · Good / Fair / Poor confidence badge — know how much to trust it · Honest precision: never shows decimals it can't back up · Relative oxygen availability estimate for high-altitude trips — not blood oxygen or medical data

ELEVATION GAIN, DONE RIGHT · One tap records ascent, descent, highest, lowest, and duration · Barometer + GPS fusion with automatic weather-drift correction · Smart noise filtering: standing still never adds fake ascent · Keeps recording with the screen locked; auto-recovers if interrupted

ALTITUDE CURVE · Live time–altitude chart while you climb · Scrub through past climbs point by point

ACHIEVEMENT CARDS · Turn a summit into a beautiful shareable card with your stats and curve

WHY ALTIMETER · Fully offline — deep wilderness, airplane mode, doesn't matter · No ads, no accounts, no tracking: altitude, location, and hike records stay on your phone; feedback is submitted only when you choose · One small one-time purchase unlocks everything. No subscription.

Free: live altitude and full recording. Pro: unlimited history and card export. ```