World Magnetic Model at App Store analyse

App power index: 180 (based on ranks around App Stores today)
Navigation Education
Developer: B. Walker Software
Price: 0 free
Current version: 2.00, last update: 5 years ago
First release : 08 Jan 2010
App size: 5.33 Mb
4.0 ( 1040 ratings )
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Estimation application downloads and cost

> 3.96k
Monthly downloads
~ $ 1.62k
Estimation App Cost


World Magnetic Model (WMM) calculates the components of the Earth’s Magnetic Field. It uses the computational engine developed by the US NGDC (National Geophysical Data Center) and other agencies. The computational engine is in the public domain.

This app is intended to be used for educational purposes only. Please don’t use it for navigational calculations critical to safe navigation.
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# Term Store county Place Priority
1 walker software 6
2 tesla fields 10
Available in countries
Country Price
Canada 1.39 CAD
China 6 CNY
France 1.09 EUR
Germany 1.09 EUR
Italy 1.09 EUR
Netherlands 1.09 EUR
Portugal 1.09 EUR
Spain 1.09 EUR
Poland 1.09 EUR
UK 0.99 GBP
India 79 INR
Japan 120 JPY
Korea, Republic Of 999.99 KRW
Poland 4.99 PLN
Russia 75 RUB
Turkey 6.99 TRY
USA 0.99 USD
Korea, Republic Of 1.09 USD
Ukraine 0.99 USD
Available for devices
iPad2Wifi, iPad23G, iPhone4S, iPadThirdGen, iPadThirdGen4G, iPhone5, iPodTouchFifthGen, iPadFourthGen, iPadFourthGen4G, iPadMini, iPadMini4G, iPhone5c, iPhone5s, iPadAir, iPadAirCellular, iPadMiniRetina, iPadMiniRetinaCellular, iPhone6, iPhone6Plus, iPadAir2, iPadAir2Cellular, iPadMini3, iPadMini3Cellular, iPodTouchSixthGen, iPhone6s, iPhone6sPlus, iPadMini4, iPadMini4Cellular, iPadPro, iPadProCellular, iPadPro97, iPadPro97Cellular, iPhoneSE, iPhone7, iPhone7Plus, iPad611, iPad612, iPad71, iPad72, iPad73, iPad74, iPhone8, iPhone8Plus, iPhoneX,
Dont buy

Wont work

Great Reference for Magnetic Model

This app works well. I checked it against the government web site for world magnetic model. It works flawlessly on my iPhone and iPod Touch. Its a great app for estimating magnetic variation.

Engineer

The software appears to have sign error for the magnetic declination...? The software does not reproduce the samples shown on the App page! Who is checking this application?

Compass graphic wrong

Under the detail view the magnetic declination is correct numerically BUT the compass graphic shows the offset in the wrong direction. In my area Magnetic North is west of True North. The app shows the correct value, but the compass graphic shows MN offset to the east of TN. Good thing the app has the warning not to use for navigation!

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