Density Altitude +

Density Altitude +

Density Altitude, Anywhere.

973 ratings
23 reviews
$3.99

Details

  • Released
  • Updated
  • May 28, 2015
  • August 9, 2024
Density Altitude + screenshot #1 for iPhone
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Density Altitude + screenshot #6 for iPhone
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About

This app calculates density altitude and other atmospheric data using location, GPS, and onboard sensors. It's accurate even without a cellular connection and useful for pilots, racers, and sports enthusiasts.

βœ“Density Altitude calculation
βœ“Relative Air Density (RAD)
βœ“Altimeter setting
βœ“Humidity calculations
βœ“GPS and barometer integration
βœ“Location search
βœ“Offline functionality
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What users say

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What's New in Density Altitude +

2.8

August 9, 2024

Bug fix: When using Density Altitude outside of cell service, Density Altitude+ now again correctly uses Onboard barometer. The issue was a recently added iOS privacy setting. If you're a current user and are still not prompted to allow the app to access the barometer, you can go into Settings->Privacy & Security->Motion & Fitness and enable access for Density Altitude+ there. Thanks for your support! Reach me at densityaltitude@rateofclimb.com

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Last updated on July 21, 2026.

User reviews

Great App but needs Apple Watch Widget

This app is great for its simplicity and ease of use. I also like how the App Store indicates that no data is collected from the app. I just wish it could integrate into the display for the Apple Watch as this is something I often reference when towing in the mountains.

Drag Racer

We are in the test stage for this app. It appears reasonabley accurate and consistent. I’m not sure how close it is to the track though. Still assessing

Excellent but wish there was a watch app

By far the best density altitude app. I just wish I could get it as an Apple Watch app with complications for my watch face.

Great for car racing

Great for car racing.

Better GPS Accuracy

This has always been a great App, but depending on location, GPS altitude for me could sometimes be off. With this new App update, 2.6.3, it provides increased satellite accuracy. Every reading for me is now completely accurate, every single time. An excellent App now made better!

Developer apps

User experience

🐞

Reported Bugs

2 issues

GPS elevation doesn't always update reliably

Bug

No way to set altitude

Bug
✨

Requested Features

4 requests

Apple Watch Widget

Feature

Barometric pressure

Feature

Relative humidity for current location

Feature

Ability to manually enter values

Feature

FAQ

What does the Density Altitude+ app do?

This app calculates density altitude and other atmospheric data like relative air density, altimeter setting, and humidity. It uses your location, GPS, and your device's onboard barometer for accurate readings, even without a cellular connection.

What are the key features of Density Altitude+?

Key features include instant and location-accurate density altitude calculation, integration of weather data and GPS, humidity-compensated calculations for higher accuracy, and the ability to search atmospheric data for any point on Earth.

Is Density Altitude+ free to use?

Yes, the app is completely free to use and does not contain any ads or in-app purchases. This ensures an uninterrupted experience for all users.

What devices is Density Altitude+ compatible with?

The app is designed for iPhone and iPad. Newer devices with built-in barometers and GPS (iPhone 6/6+ and newer iPads) will leverage these sensors for enhanced accuracy.

Who would find Density Altitude+ useful?

This app is highly useful for pilots, especially in backcountry aviation, as well as for drag racers, engine tuners, golfers, and anyone who needs to quickly and accurately determine density altitude and related atmospheric conditions.