avAltimeter is a digital, aviation-oriented altimeter. It is the only altimeter app which has the Kollsman adjustment so you can adjust the altimeter to the current barometer setting, or to 29.92 inches of mercury for the pressure altitude. Need a quick backup for your panel? avAltimeter uses the latest Apple and Bosch technology built into the iPhone 6 and later models. Earlier models of the iPhone and iPads before iPad Air 2 or Mini 4 do not have the required pressure sensing hardware and do not work. All iPad Pro models work too!


avAltimeter calculates the temperature sensitive Density Altitude. Based on the Density Altitude, the app also calculates True Airspeed as a function of Indicated Airspeed. avAltimeter calculates a rough estimate of the increased required Take-Off distance from that at seal level from increased Density Altitude as well.

Increased Safety!

Know your oxygen requirements. avAltimeter tracks your altitude and provides a warning to use oxygen when you exceed FAA mandated limits.


avAltimeter is customizable. Choose Imperial or Metric units. Set the Altimeter Setting through a popup Kollsman window or by directly setting the field altitude. The field altitude can be set manually or automatically by GPS. Select Day or Night illumination. Turn the audio alarms for oxygen on or off. Improve the take-off performance estimate by selecting your propellor type: constant speed or fixed pitch.


The Bosch sensor chip built in to the iPhone 6 and later is sensitive to changes in altitude of three feet or less and has an estimated range from -1500 feet to over 20,000 feet.


Unlike other aviation apps, avAltimeter uses actual barometric pressure to calculate altitude, not a GPS estimate. The barometer is only available in iPhone 6 and later or the iPad iPad Air 2, Mini 4 as well as all iPad Pro!

Legal Disclaimer

This is an app, not an FAA approved flight instrument. It has not been certified as meeting the relevant TSO specifications. This app can not be used as a primary flight instrument.

What’s New

Version 1.13

Fixes a crashing bug when repetitively setting the OAT. The crash only occurred in iOS 13.4, but not anymore!

Ratings and Reviews

4.4 out of 5
13 Ratings

13 Ratings

Chrissey IFR ,

Well done !

As a pilot, this is exactly what I wanted for educational purposes.
It is an electronic altimeter made to look exactly like an altimeter in an airplane.. well done. It does exactly what it is dessigned to do and nothing more.

Developer Response ,

Thanks for the kudos Chrissey! They are much appreciated. Actually, the app does a bit more than a panel altimeter: Density Altitude, Altitude Alerting, smart Oxygen Alarm, setting QNH by 4 different sources, etc. Enjoy the App!

NailAviator ,


The only altimeter app I've found with a truly real appearance including a Kollsman window. I love it.

OwenandDylan ,

Happy User

Nicely done!

App Privacy

The developer, Aviametrix, LLC, has not provided details about its privacy practices and handling of data to Apple. For more information, see the developer’s privacy policy.

No Details Provided

The developer will be required to provide privacy details when they submit their next app update.


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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