I have just downloaded this app find it good. I will give the next star after I see what all I benifit from this app.
The best around! Samsung Galaxy Note 2. Android 4.4.2. The app is very stable and the easiest for me to calibrate of all I've tried. The sensors on my phone are a bit wonky but even so I get good readings. The four data sources provide an excellent reference to keep things calibrated, especially in my area that has frequent storms and wide barometric swings. Taking it overseas - betting it will work well in other countries, too!
I'm amazed at those who complain about "ads." (Kevin Flannery and Pete Glass, for example). How do you think they keep the product FREE?! ADS KEEP THE APP FREE!!! If you're okay with a "free" app, then stop whining -- else PAY for an app with no ads! This is THE most accurate I've seen -- it appears to use multiple factors to determine altitude; not just GPS. The GPS-based apps rarely give different altitude readings as you go "up and down" somewhere; they simply look at your GPS location and give an approximate altitude based on the latitude and longitude. Comparatively speaking, I saw this app actually change altitude values when I moved the mobile phone up, and then down. That said, it still varies up to 20 feet, in the exact same spot, so it's far from perfect.
Too many ads The app is great, except for the fact that every time I open the settings I'm shown a new ad. Also the exit ad question is annoying.
Most accurate so far Really enjoy the map feature. This seems very accurate compared to using the gps.
For mountain climbing I downloaded while on a hiking trail. Excellent elevation check.
v.2.06. Required to access the new USGS / National Map server for the continental USA.
v.1.50. Pressure Altitude for compatible devices
v.1.21. This update is required in order to get Land Survey Data outside the Americas for both the Altimeter and the maps using the Mapquest Elevation Service.
v.1.13. Added Maps. Get elevation values from map. Includes ocean depth values.