I just traveled cross country from LA to Boston and used this app not just to measure altitude but also for location. I wouldn’t have known there were rolling plains above 6000 feet has it not been for this. Accuracy was amazing as I cross referenced signs along the route against the app and found them to be constantly within .5% and for the most part even tighter. It’s as easy as opening the app and watching the altitude change in real time. Highly recommend!

Altimeter is a really great app to have and use especially for traveling across country and it has really come in handy on a trip when you really don’t know what the elevation is and all that you do is to open it on the iPhone and it will tell you the coordinates, name of city and town and the elevation of the place you are in or near. It is a very handy app and it is very easy and simple to use

Not only does this app provide you with your elevation above sea level, but most importantly it also indicates your longitude and latitude. If you’re ever lost in the woods or anywhere else and call 911 for help, just give them those numbers. You will be located and rescued immediately.

Used this app in the mountains on vacation to find out how high we were. Corresponded to the signs we saw at the top of each and gave us a better idea when we were up or down the mountain passes. Works without data which is great because in the areas we were driving there is none.