Compass & Altimeter

PixelProse SARL

In-app purchases

About this app

A simple and easy to use Compass to retrieve useful information about your current position such as true Geographic north and true altitude above sea level.

• Works perfectly offline and without network access
• Geographic north using magnetic declination
• True altitude above mean sea level (AMSL)
• Sunrise & Sunset times
• Azimut angles in deg, grad, mrad, gon
• Various dials and color themes (including high contrast)
• Angle measurement (with dials including measuring capabilities)
• Bubble Level functionnality (available in iPhone dial)
• Use EGM96 as the geoid reference for computing altitude
• Latitude & Longitude in MGRS, UTM coordinate formats
• Latitude & Longitude in DD, DMM or DMS format
• British National Grid (OSGB86) coordinate system
• SwissGrid (CH1903 / LV95 / MN95)
• Magnetic field strength to detect potential perturbations
• Sensor accuracy
• Address of your current location (requires data connectivity)

Compass better works outside where magnetic perturbations are low. Magnetic closure cell phone cases may also disrupt the accuracy of the compass.

EGM96 (Earth Gravitational Model) is used as the geoid reference to compute true altitude above sea level from data collected by the GPS sensor. UTM (Universal Transverse Mercator) is a system for assigning coordinates to locations on the surface of the Earth.

Have fun !

Ratings and reviews

No better or worse than the competition I guess, but none of these apps get the message... point is in a consistently correct direction! Kind of like the 'old fashion' handheld floating needle type did. This is useless at best ... life threatening at worst. Maybe it's best to carry a real compass and/or use some of that precious data space and access a map app to get there safely. Yes?

I went through the calibration routine but the app only seems to give location and altitude information when you first open the app. No matter how far I go after that this information fails to update. That effectively renders the app useless. Who wants to have to constantly close the app and restart it during a hike? Oh, and half of the time the compass is wrong, sometimes laughably so. Sacrifice my privacy for an app that doesn't work? I think not. Uninstalled.

It looks nice though at launch the app opts in to track and sell your data to 3rd parties, then requests a review. The app wants permission to track whilst it isn't running. This gives 1 "skin" included, you must pay $2 to unlock detailed "views". Other than those issues, the app is a just a compass. For now, Im just uninstalling it. There are other 100% free apps with (truly) no ads or sleight of hand.