DenAlt app for iPhone and iPad

4.6 ( 8896 ratings )

Utilities Navigation
Developer: Marcus Staloff

0.99 USD

Current version: 1.3.3, last update: 5 years ago
First release : 08 Jul 2010
App size: 2.64 Mb

DenAlt is an iPhone/iPodTouch app which calculates the density altitude for inputs of actual altitude, air temperature, altimeter setting (atmospheric pressure), and dew point. The density altitude is a conceptual artifice and is the indicated altitude corrected for non-standard temperature and pressure. Pilots use the density altitude as a convenient measure of air density. Air density in turn determines aircraft performance. As the air density decreases so does aircraft performance.

All pilots are taught about the effects of density altitude and gain some degree of intuition which is helpful. Nevertheless the density altitude is intended to be used in a quantitative manner. The traditional way involves the use of analog charts or analog circular slide rule type of calculators. These methods are not particularly convenient and the practical result is that most pilots do not properly take account of the decrease in aircraft performance.

This app makes the inclusion of density altitude effects fast, accurate, and convenient. Additionally the real world appreciation of a significant difference between an indicated altitude and the corresponding density altitude is enhanced by the graphical presentation of results.

Enter:
Alittude (Field Elevation)
Temperature
Altimeter Setting
Dewpoint

Tap RESULTS button

Graphic View: actual altitude and density altitude

Main View Button: brings up Main View and all results

Category: Navigation
Current Version: 1.00
Language: English
Seller: Marcus Staloff
© 2010 Marcus Staloff
[email protected]

Requirements:
iPhone, iPodTouch, iPad,
iPhone OS

Application Price: $0.99

Pros and cons of DenAlt app for iPhone and iPad

DenAlt app good for

All aviators know that density alt is very important to prevent accidents and therefore no pilot should be flying without using this very good app. Use it and survive!!!!

Good tool for checking DenAlt in the cockpit < preflight, with current #s.

Does what it says it will in meters or feet, millibars or inches, celsius or farenheit -- you choose! I just wish I could use it in landscape on my iPad.

I too thought it would not work in US units. It does but it is just quirky to get it set. You have to change the setting, hit done, then close out the app. When you open again it will be in US.

App works as advertised, and is simple to use. User settings allow you to calculate altitude in feet or meters, temps in fahrenheit or celsius, and pressure in Hg or Mbs. Couldnt ask for more in a free app.

All around great. Would be perfect if we had an iPad HD version!

Some bad moments

The units cant be changed, despite displaying the option to do so. Changing units doesnt work.

Does not allow change from US to metric. After flipping switch it just reverts back to metric.

This app worked fine till the latest update. Now it will not accept non metric units. And it simply does not work.

After working fine for a couple years, no longer works. Tried deleting & re-installing; still no joy. Was a handy tool but now reverting to Plan A; E6B.

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