Welcome to Master calculator pro.This is a simple and helpful app.This is like a pocket calculator all in one calculator. *** Simple Mode:- Here you can do simple calculation like multiply, divide,addition,subtraction,percentage and choose positive or negative number and now you can also do SCIENTIFIC CALCULATION. *** Speak Mode:- Here You can do calculation by telling the operation. *** Age Calculator:- Here You can calculate your age according to your birth date and any date. *** Bmi Ca