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Alt-O-Meter app for iPhone and iPad


4.2 ( 7472 ratings )
Navigation Health & Fitness
Developer: Joshua Hinman
Free
Current version: 2.1, last update: 3 months ago
First release : 07 Jan 2017
App size: 3.03 Mb

Alt-O-Meter uses the barometer (air pressure sensor) in your late-model iPhone or iPad to calculate your precise height above sea level. Great for hiking, skiing, driving through mountain passes, flying, and more!

• Reads ambient air pressure for a more precise reading than GPS.
• Realistic, retro style. Looks like a classic airplanes altimeter!
• Automatically calibrates for local atmospheric pressure.
• ...also allows precise user calibration (optional; for advanced users)
• Uses GPS hardware in devices that lack a barometer.
• Completely free! No ads or in-app purchases.