Mental Calculation FLASH ANZAN (com.ymkwt.android.mentalcalculation) on Google Play
This is japanese right brain training called Flash Anzan.You add all numbers popping up one after another.This mental arithmetic application will make you able to perform hundreds calculations a minute.If you fall into a slump, you should remember following words.Don't think. FEEL!(Bruce Lee)Main function:Speed range (2.0秒-0.15秒)Digit number (1桁-5桁)Number of calc (5回-300回)Including negative number or notFixed number of digits or notTo save the percentage of questions answered correctlyTo retry the previous questionTo start again where you left off