# Variation

> 현재 날짜의 변형입니다. 자기 나침반을 이용한 탐색에 사용됩니다.

Canonical page: [https://chrome-stats.com/d/com.Variation?hl=ko](https://chrome-stats.com/d/com.Variation?hl=ko)

## Overview

- **ID:** `com.Variation`
- **Platform:** Android
- **Type:** Android app
- **Status:** Available
- **Publisher:** Navigational Algorithms
- **Category:** MAPS\_AND\_NAVIGATION
- **Downloads:** 25,402
- **Rating:** 5.00 / 5 (113 ratings)
- **Version:** 5.1
- **Last updated:** 2025-07-02
- **First published:** 2014-09-09
- **Publisher country:** ES
- **Size:** 6.52 MB
- **Data as of:** 2026-09-12
- **Store listing:** [Google Play Store](https://play.google.com/store/apps/details?id=com.Variation)
- **Website:** [http://sites.google.com/site/navigationalalgorithms/](http://sites.google.com/site/navigationalalgorithms/)
- **Privacy policy:** [https://sites.google.com/site/navigationalalgorithms/software/android](https://sites.google.com/site/navigationalalgorithms/software/android)

## Description

현재 날짜에 대한 변형입니다.<br>자기 나침반을 이용한 탐색에 사용됩니다.<br>-<br>변이는 임의의 위치에서 자오선과 지리적 자오선 사이의 각도로, 진북에서 자북 방향을 나타내기 위해 동쪽 또는 서쪽 각도로 표시됩니다. 모호함을 방지하기 위해 구별이 필요할 때 MAGNETIC VARIATION이라고 합니다. 자기 편각이라고도 합니다. (바디치)<br><br>이 앱은 World Magnetic Model: WMM2025를 사용합니다.<br>새 모델은 2024년 11월 13일부터 2029년 12월 31일까지 유효합니다.<br>참조: https://www.ngdc.noaa.gov/geomag/WMM/DoDWMM.shtml<br><br>마지막 위치가 자동으로 저장됩니다. <br>   - 위치를 저장하려면 저장 권한이 필요합니다.<br><br>코스 계산기<br>나침반과 진정한 코스.<br>편차 계수<br>Dev = A + B SIN(Ra) + C COS(Ra) + D SIN(2Ra) + E COS(2Ra)<br>&quot;자기 나침반&quot; Windows 애플리케이션(Navigational Algorithms 웹사이트에서 사용 가능)을 사용하여 계수 A,B,C,D,E를 계산합니다.<br>입력하고 저장하세요. 앱이 데이터를 읽고 코스 계산기가 편차를 계산할 수 있습니다.<br>               <br><br>사용자 인터페이스<br>- 줌 버튼 +/-<br>- 지도 유형: 일반, 지형, 위성<br>- GPS 위치. (&#39;위치&#39; 앱 권한을 허용해야 합니다. GPS를 켜야 자동 위치 감지가 가능합니다)<br> <br>지도상의 이벤트:<br> • 길게 클릭: 현재 날짜의 위치에 변형이 있는 표시를 추가합니다.<br> • 마크를 탭하면 정보를 볼 수 있습니다.<br> • 지도 동작: https://developers.google.com/maps/documentation/android-sdk/controls

## Rankings

- #394,991 — Overall
- #1 — variation

## Permissions and access

### Permissions

- `android.permission.ACCESS_COARSE_LOCATION`
- `android.permission.ACCESS_FINE_LOCATION`
- `android.permission.ACCESS_NETWORK_STATE`
- `android.permission.INTERNET`
- `android.permission.READ_EXTERNAL_STORAGE`
- `android.permission.WRITE_EXTERNAL_STORAGE`
- `com.Variation.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION`
- `com.google.android.providers.gsf.permission.READ_GSERVICES`

## Review summary

Users appreciate the app's accuracy and usefulness in finding magnetic variation and declination. However, many report significant issues with the GPS/location detection feature not working correctly across various devices, forcing users to manually select their location. Additionally, the app sometimes defaults to a location in Spain instead of the user's current location. Some users also experience crashes on older Android versions. Overall, while helpful, the app's location functionality needs improvement.

### Pros

- Accurately provides variation data and is consistent.
- Helpful for finding magnetic declination.
- Good application when location permission is granted.

### Cons

- GPS/location detection does not work properly on multiple devices.
- App defaults to location in Spain instead of user's actual location.
- Crashes instantly on some older Android versions (e.g., Android 4.04).
- Requires manual location selection if GPS is not functional, reducing convenience.

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Source: [Chrome-Stats](https://chrome-stats.com/d/com.Variation?hl=ko)