Compass & Altimeter

In-app purchases
113K reviews
Content rating
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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 !
Updated on
Jul 4, 2024

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
No data shared with third parties
Learn more about how developers declare sharing
This app may collect these data types
App info and performance and Device or other IDs
Data is encrypted in transit
Data can’t be deleted

Ratings and reviews

112K reviews
Stan W
May 30, 2024
I downloaded this app. while touring the southwest. It was great to know the elevations of all the mountains & valleys. with compass was a plus. Both features appeared to be accurate. Along with the sunrise & sunset times. Great features all combined in one app.. Great for auto or hiking. Look forward to using it again. Thanks
30 people found this review helpful
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January 22, 2024
I gave up trying to figure out how Googlemaps can display altitude. "Compass & Altitude" delivers, easily. Pretty app. Going ad-free costs more than average, but it's not bad for a concise app. Yeh, about 75 toggles need to be switched to stop data-sharing. If you go back to see everything is de-selected, the toggles that were On by default turn back on, so you have to toggle them back off again, so you can't really review your settings. Many toggle sharing permissions are incomprehensible.
142 people found this review helpful
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Derek Wilson