Performance · Worldwide
Downloads & Revenue estimates
Monthly, by storefront, with daily history
Rating · WW
4.6★
679 ratings
Chart position
Apple's Top Grossing chart — all apps ranked by revenue (purchases + subscriptions).
Ratings count — US
Not enough history yet.
Listing
简单的数学题，不过你只有很短的时间做出判断，对或错，快速做出你的选择！ 多种游戏模式，测试你的反应速度和记忆力。 既可与全球玩家一较高下，也可与你身边的好友多人对战，乐趣多多。
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