Altimeter: Hike & Ascent Log

Offline hiking altimeter

Only for iPhone

Free · In‑App Purchases

iPhone

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 MOUNTAIN LEADERBOARDS · Every mountain gets its own board — fastest time wins · Strictly opt-in: don't post, and the app stays fully offline · No sign-up: app-scoped iCloud identity, pick a nickname · Remove your results anytime; touch and hold to report content WHY ALTIMETER · Core features work fully offline — deep wilderness, airplane mode, doesn't matter · No ads, no accounts, no tracking: altitude, location, and hike records stay on your phone by default; leaderboard results and feedback are sent 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.

Ratings & Reviews

  • 5.0
    out of 5
    1 Ratings

New mountain leaderboards: compare your fastest summit times, post voluntarily, and remove your results anytime.

Version 1.1

The developer, 志平 李, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .

  • Data Linked to You

    The following data may be collected and linked to your identity:

    • Health & Fitness
    • Location
    • Contact Info
    • User Content
    • Identifiers
    • Diagnostics

Privacy practices may vary, for example, based on the features you use or your age. Learn More

Accessibility

The developer has not yet indicated which accessibility features this app supports. Learn More

Information

Seller
  • 志平 李
Size
  • 1.5 MB
Category
  • Navigation
Compatibility
Requires iOS 17.0 or later.
  • iPhone
    Requires iOS 17.0 or later.
Location
  • This app may use your location even when it isn’t open, which can decrease device battery life.
Languages
  • English and Simplified Chinese
Age Rating
4+
In-App Purchases
Yes
Copyright
  • © 2026 Icy Li
  • Privacy Policy