15 20 (hand guessing game) at App Store analyse

App power index: 190 (based on ranks around App Stores today)
Games Entertainment Family Strategy
Developer: SIMON SUNG
Price: 0 free
Current version: 1.3.4, last update: 7 years ago
First release : 28 Mar 2011
App size: 22.98 Mb
4.0 ( 8560 ratings )
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Estimation application downloads and cost

> 4.18k
Monthly downloads
~ $ 1.71k
Estimation App Cost


15 20 is a very popular hand guessing game.
Its as easy as rock-paper-scissors, but more exciting.

How to play:

On your turn, select your call (0, 5, 10, 15, or 20). Swipe the screen with 2 fingers simultaneously to show your hands. Upwards is palm, downwards is fist. Palm is 5, fist is 0. Your opponent needs to respond immediately (less than a second) by swiping the screen with 2 fingers to avoid your call. The total count of palms and fists must not equal to your call. Your opponent can choose not to swipe if the count is already different from your call. If your opponent successfully avoided your call, its his/her turn to call and all scores are reset to 0. If your opponent failed, you score a point and get to call again. You win a round by scoring 2 consecutive points. Whoever wins a round, all hands are reset to fists. The first to win 10 rounds wins the match.

I was googling a background for this game. I came across a picture of Tower23 Hotel San Diego. It has a beautiful bar and the view is gorgeous !!!
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Available in countries
Country Price
Canada 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
iPodTouchSecondGen, iPhone3G, iPhone3GS, iPadWifi, iPad3G, iPhone4, iPodTouchThirdGen, 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,