20/20 Primes and Factor Trees at App Store analyse

App power index: 180 (based on ranks around App Stores today)
Reference Education
Developer: Walter Kissach
Price: 0 free
Current version: 8.7, last update: 1 year ago
First release : 18 Dec 2008
App size: 1.93 Mb
4.8 ( 4448 ratings )
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Estimation application downloads and cost

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


A power learning aid combines Coaching Calculators and Guides to help students master prime factorization, LCM and GCD.

Prime factorization :

- Prime factorization by factor trees

LCM or Least Common Multiple :

- LCM by prime factorization

- LCM by listing multiples

GCD or Greatest Common Divisor :

- GCD by prime factorization

- GCD by listing divisors

You develop understanding quickly as you work with the calculator and see each step of the process in detail.
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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 free
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,