Your altitude is usually measured as your height above sea level. It's a useful information, especially if you like climbing mountains. You can find your current altitude by looking at your iPhone and you already have the application to do it.
All iPhones from the iPhone 6 include a barometer that calculates the current altitude of the device. The iPhone uses this data for different purposes, especially to help know when you climb a staircase. You must close these circles of activity.
The difference between altitude and altitude
People often exchange the two words, but they have different definitions. Altitude is the height of an object or place "above a given planetary reference plane, especially above sea level on Earth", as explained by dictionary.com.
Elevation relates to a position "above sea level or soil" according to the same source.
Measure your altitude
It is easy to find your altitude and you have nothing to download to do it. The Compass app is installed on all iPhones, it's all you need to get started.
First, open the "Compass" application. Then locate the indicated altitude, which appears at the bottom of the screen.
Elevation data is fairly basic but super useful information sometimes. If you need more information about your current location, you can download more detailed apps such as My altitude. This one is free with built-in purchases to unlock additional data.
Another use of the Compass application
In addition to displaying your coordinates and your altitude, the Compass application still has a trick in its bag: you can use it as a level. This is surprisingly accurate thanks to the multitude of sensors built into the iPhone and practical when a new shelf must absolutely be perfectly level.