* Seamlessly integrates weather data, GPS and your phone's onboard barometer to quickly and accurately calculate your density altitude, altimeter setting, relative density, and more.

* Takes humidity into account in all calculations, making it more accurate than the typical dry bulb approximation formula used by AWOS/ASOS, etc.

* Works great without cellular connection as well, which makes it all the more useful in the backcountry.

The quickest way to get your Density Altitude! On the iPhone 6/6+ and newer iPads, it will use the built-in barometer and GPS. If you're in cell range, you don't need to supply any data. If you're out of cell range, all you need to supply is the outside air temperature. Designed not to need an internet connection, so it will work anytime and anywhere you need it.

Great tool for pilots, drag racers, engine tuners, golfers, or anyone who needs to conveniently find their Density Altitude, Altimeter Setting, Relative Density or Absolute Pressure.

No ads or in-app purchases.

We love feedback! Email us at

What’s New

Version 2.0

The original, now better than ever:
* Humidity is now considered in all calculations, making Density Altitude+ more accurate than most available density altitude reports, especially when humidity is high.
* New: Native iPad app included!
* New: Relative Density (RAD): Very useful for engine tuning and racing
* New: Air Density in kg/m3
* New: Relative Humidity
Thanks for the support and feedback! You can always reach us at

Ratings and Reviews

4.8 out of 5
352 Ratings

352 Ratings

Farabaugh ,

Works well

Wanted something to quickly calculate DA so I could input into my ballistics shooting app. I know this is designed for pilots but I thought it worth the try. Non humid days, works well. High humidity it’s off. I know this app uses dry air formula so not knocking the app. Developer did mention other possible uses tho.
To be able to manually enter values by turning off an automatic fill button would be great.

DA is becoming a more widely used method on ballistic applications over the previous idea of entering elevation and temperatures.

N801bz ,


Quick and location accurate. A must for Mtn flying.

DaveMan1 ,

Simple and Useful

The simplicity of the app makes it practical to use. Awesome!


Kristian Ljungkvist
19.3 MB

Requires iOS 10.0 or later. Compatible with iPhone, iPad, and iPod touch.



Age Rating


  • Family Sharing

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

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