Math Games for the Brain
BrainSoft Apps
心算(数学・脑力训练 App)
Hiza Games
Mental Math Master
5daysweekend
数学名师掌握速算技巧
Standy Software
数学益智游戏 - Crossmath 交叉数学
Guru Puzzle Game
Mental Calculation Training
DM Mobile Apps
数学-数学游戏和学习数学
AdamSoftware
Mental arithmetic for adults
Jonatan Resa Fernandez
心算。乘法表
AndRewApps
数学技巧
Antoni soft group