Variation was a maps & navigation app developed by Navigational Algorithms. It was removed from Google Play Jan 30, 2025 and is no longer available for download.
Download Statistics
Variation had been downloaded 23 thousand times before it became unavailable.
User Ratings
Variation was rated 5.00 out of 5 stars, based on 94 ratings.
App Information
Variation was free to download. The APK download size was 2.67 MB. The last available version was 5.0. The last update was on December 28, 2024.
Technical Requirements
Variation required Android 4.0+ or higher. The app had a content rating of Everyone. The app had been available on Google Play September 2014.
Description
VARIATION for the current day. Used in navigation with a magnetic compass. - Variation is the angle between the magnetic and geographic meridians at any place, expressed in degrees east or west to indicate the direction of magnetic north from true north. Called MAGNETIC VARIATION when a distinction is needed to prevent possible ambiguity. Also called MAGNETIC DECLINATION. (Bowditch)
The app uses the World Magnetic Model: WMM2025. The new model is valid from 13/11/2024 to 31/12/2029. See: https://www.ngdc.noaa.gov/geomag/WMM/DoDWMM.shtml
Your last position is automatically saved. - Storage permission is needed to save your position.
COURSE CALCULATOR Compass and true course. DEVIATION COEFFICIENTS Dev = A + B SIN(Ra) + C COS(Ra) + D SIN(2Ra) + E COS(2Ra) Calculate the coefficients A,B,C,D,E with "Magnetic compass" Windows application, (available at Navigational Algorithms website). Enter them and save. The App will read the data and Course calculator will be able to compute the deviation.
USER INTERACE - Zoom buttons +/- - Map types: normal, terrain and satellite - GPS location. ("Location" App permission must be allowed. Switch on you GPS, and then automatic location detection is possible)
Events on Map: • Long Click: adds a mark with the variation at position for the current day. • Tap the Mark to see the information. • Map gestures: https://developers.google.com/maps/documentation/android-sdk/controls
Recent changes: Updated to WMM2025 World Magnetic Model 2025 valid from 13/12/2024 to 31/12/2025
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★★★★★
Good application. To those complaining about automatic location detection, allow the "location permission" to this application.
★★★★★
Works great...! For those having trouble the app doesn't automatically prompt to allow GPS, go to (Setting --> Apps --> Permissions) and allow location, this worked for me.
★★☆☆☆
Sony Ericsson Xperia active ST17. Android 4.04. The application crashes instantly when launched.
★★☆☆☆
The gps is not functional. Secondly, the app when launched should retrieve the local gps coordinates not those of Spain. It's practically almost useless without the gps.
Technologies used by Variation
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