Solitaire21 at App Store analyse

App power index: 120 (based on ranks around App Stores today)
Games Education Card Educational
Developer: Önders et Gonas
Price: 0 free
Current version: 3.0, last update: 7 years ago
First release : 08 Jun 2011
App size: 2.61 Mb
4.8 ( 6128 ratings )
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Estimation application downloads and cost

> 2.64k
Monthly downloads
~ $ 1.08k
Estimation App Cost


Math21 is a card game where you are given five cards and your job is to combine them using the four arithmetic operations and get the result 21.

Solve ten hands (an entire deck of cards) as fast as possible and get your scores on the leaderboard!

As a side effect you will hone your math skills and become smarter, faster, more successful, and better looking.

Some combinations of five cards are unsolvable in this game, these combinations are of course never given in the game.

The free version includes a practice mode only, the full version is available as an In-App Purchase.
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# Term Store county Place Priority
1 krypto 7 ⭐️⭐️⭐️⭐️
2 krypto! 7
Available in countries
Country Price
Canada free
China free
France free
Germany free
Italy free
Netherlands free
Portugal free
Spain free
Poland free
UK free
India free
Japan free
Poland free
Russia free
Turkey free
USA free
Korea, Republic Of free
Ukraine free
Available for devices
iPhone3GS, iPhone4, iPodTouchFourthGen, 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,