GPS devices and GPS apps for your ... Step 1: Adjust your compass for declination There are two types of north: magnetic and true. These two norths don’t quite align, and with magnetic north ...

While there's no doubt that these GPS-powered navigation apps are helpful, sometimes you just need to quickly figure out which direction is north. In those cases, your iPhone's built-in Compass ...

And as the iron and nickel inside our planet shift, so does Earth's magnetic field, meaning the North (and South) Poles are ...