Fitch Cheney at Mac App Store analyse

App power index: 100 (based on ranks around App Stores today)
Card Education Games
Developer: Joachim Neumann
Price: 0 free
Current version: 1.0, last update: 1 year ago
First release : 17 Apr 2021
App size: 2.13 Mb
4.0 ( 7440 ratings )
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Estimation application downloads and cost

> 2.2k
Monthly downloads
~ $ 900
Estimation App Cost


Inspired by the YouTube video "The Pigeon Hole Principle: 7 gorgeous proofs" by Burkard Polster (Mathologer): https://www.youtube.com/watch?v=TCZ3YwbcDaw

Explaining PDF: https://web.northeastern.edu/seigen/11Magic/FitchCheneyFiveCardCount/Fitch%20Cheney%27s%20Five%20Card%20Trick%20-%20Colm%20Mulcahy.pdf

How to use
The order of the cards for the ranking is 2, 3, 4, ... A and diamonds, hearts, spades, clubs.

In the iOS Settings app, you can scroll to Fitch Cheney and adjust (a) the language of the only word (card) and the position of the key card between 1 and 4
Read more

Available in countries
Country Price
Canada free
China free
France free
Germany free
Italy free
Netherlands free
Portugal free
Spain free
UK free
India free
Japan free
Korea, Republic Of free
Poland free
Russia free
Turkey free
USA free
Ukraine free
Available for devices
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, iPad75, iPad76, iPhoneXS, iPhoneXSMax, iPhoneXR, iPad812, iPad834, iPad856, iPad878, iPadMini5, iPadMini5Cellular, iPadAir3, iPadAir3Cellular, iPodTouchSeventhGen, iPhone11, iPhone11Pro, iPadSeventhGen, iPadSeventhGenCellular, iPhone11ProMax, iPhoneSESecondGen, iPadProSecondGen, iPadProSecondGenCellular, iPadProFourthGen, iPadProFourthGenCellular,