Variation

Variation for the current day. Used in navigation with a magnetic compass.

Navigational Algorithms · com.Variation

Not rated yet 10K+ downloads v4.8 2.9 MB Android 4.4+ PEGI 3 · Everyone

Download APK 2.9 MB All versions

At a glance

Latest version: v4.8 (18)
Updated: Mar 19, 2024 (2 years ago)
APK size: 2.9 MB
Requires: Android 4.4+ (API 19)
CPU support: Any (no native code)
Graphics: OpenGL ES 2.0+
Category: Maps & Navigation (app)
Listed since: Apr 20, 2021 (at least)
Permissions: 7 (3 sensitive)
Website: sites.google.com/site/navigationalalgorithms
Developer contact: [email protected]

About this APK

Variation is an app by Navigational Algorithms in the Maps & Navigation category, listed since at least April 2021. It has no native code, so it runs on any Android processor.

It asks for 7 permissions, 3 of them sensitive: precise location, approximate location and modify shared storage.

What's new in v4.8

New UI for: - Course calculator. - Deviation coefficients. Updated to: - Android 14 (API 34) - com.google.android.gms:play-services-maps:18.0.2

Description

From the listing uploaded by “appupdater”.

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: WMM2020. The new model is valid from 10/12/ 2019 through 31/12/2024. See: https://www.ngdc.noaa.gov/geomag/WMM/DoDWMM.shtml Your last position is automatically saved. - Storage permission needed for Google Maps cache and for 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

Security & authenticity

Security rating: Trusted

Signing certificate

Certificate issued to “Navigational Algorithms” The developer's name — though anyone can put any name in a certificate.

Store checks and file details

Developer signature verified Mar 19, 2024
Signed byCN=Navigational Algorithms, OU=Navigational Algorithms, O=Navigational Algorithms, L=Donostia - San Sebastian, ST=Gipuzkoa, C=ES
Signing certificate (SHA-1)A5:59:A0:8C:4E:38:AB:94:4F:25:60:F7:37:4A:F8:DE:96:E0:2F:9F
File MD58f4b9ad93942b65c046fbb3782df3a4d
Uploaded by “appupdater” Gold tier · 117,810 followers · uploading since 2020

Scans and ratings come from the source store; the certificate comparisons are AAPKs's own, made from the files' published signatures. AAPKs doesn't scan files itself — compare the MD5 and signer after downloading.

Permissions (7)

Variation requests 7 permissions, 3 of them sensitive.

Approximate location Sensitive android.permission.ACCESS_COARSE_LOCATION
Modify shared storage Sensitive android.permission.WRITE_EXTERNAL_STORAGE
Precise location Sensitive android.permission.ACCESS_FINE_LOCATION
Full network access android.permission.INTERNET
Internal broadcast protection (app-defined) com.Variation.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION
Read Google service settings com.google.android.providers.gsf.permission.READ_GSERVICES
View network connections android.permission.ACCESS_NETWORK_STATE

Required hardware & features

Basic touch input android.hardware.faketouch
Location android.hardware.location
GPS android.hardware.location.gps

Variation APK: questions and answers

Can I install this APK over the version I already have?

Only if it is signed with the same certificate as the copy on your phone and isn't an older version. If Android says “App not installed”, the certificates differ; uninstalling your copy first works but deletes its data unless it is backed up.

Is the Variation APK safe?

No one can promise that a file is safe, but some things can be checked. The source store rates this file Trusted. After downloading, check that the file's MD5 is 8f4b9ad93942b65c046fbb3782df3a4d.