Density Altitude +
Screenshots
Description
Instant and location accurate Density Altitude calculator/instrument app for iPhone and iPad that also finds relative air density (RAD), altimeter setting, relative humidity, specific humidity (grains/lb) and more. Super useful for pilots, especially in the backcountry. Many other uses for engine tuning, racing, sports, etc. * Seamlessly integrates weather data, GPS and your phone's onboard barometer to quickly and accurately calculate your density altitude, altimeter setting, relative air 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 anywhere. Great without cellular connection as well, which makes it all the more useful in the backcountry and far away from ASOS/AWOS stations. * Location Search: Find atmospheric data (Density Altitude, etc.) at any point on Earth, from anywhere! Data Sensed and Calculated (all calculated with humidity): * Density Altitude * GPS Altitude * Temperature * Altimeter Setting * Absolute Pressure * Dew Point * Relative Humidity * Specific Humidity (grains/pound) * Air Density * Relative Air Density (RAD) * Dyno Correction 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 Aid Density (RAD), Specific Humidity or Absolute Pressure. No ads or in-app purchases. We love feedback! Email us at densityaltitude@rateofclimb.com Disclaimer: Density Altitude+ uses available third party weather and elevation data to calculate atmospheric measurements, but Rate Of Climb does not guarantee that the original sources (including the National Weather Service, FAA and others) have provided data that is accurate, complete, timely, or properly formatted. Users should always contact official sources for the most accurate and timely updates. The service is not intended for use in situations in which the failure of the service could lead to death, personal injury, or severe physical or environmental damage. Your use of this application is at your sole risk.
What's New
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
Details
- Developer
- Rate Of Climb Industries
- Main Category
- Navigation
- Version
- 2.8
- Version Release
- 2024-08-09
- Initial Release
- 2015-05-28
- Size
- 4 MB
- Age Rating
- 4+
- Price
- USD 3.99
- Languages
- EN
- Bundle ID
- com.rateofclimb.Density-Altitude-Barometer
- Version Rating
- ★ 4.85 (1,015)
- First Seen
- 2026-05-28
Metadata updated 2026-06-15
Rank History
Free · Max 90 days · Top 5 categories shown (Y-axis: rank, lower is better)
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User Reviews
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.
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.
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!
GPS elevation doesn’t always update on the fly reliably. Example you check at bottom of a hike. Then gain 2,000’ elevation after hike. Check app again. GPS altitude/elevation doesn’t change. Don’t see how it can be accurate given this occurrence
I use it to backup my weather station data on my dyno as well as when I’m playing around with my car. 👍
Works good. Doesn’t need to be perfect, just give an idea of whats going on. Good enough to right info on a dope card.
It would deserve a five star rating if I could manually change the location.
Ok so the fact that they added stuff for racers when someone asked is awesome! Only thing I would like to see is the barometric pressure. Other than that this app is pretty sweet. I’m a racer BTW
Spot on with my weather station everywhere I go! Granted the weather station was 1500.00 & app was 3.99! This app is a no brainer for any on track race tuner!!
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