DO NOT DOWNLOAD THE APP IF YOU DO NOT HAVE THE UNLOCK PIN OR CODEGALAXY MATH is a tool for children to learn to become familiar with arithmetic functions: addition, subtraction, division and multiplication.Offline application.RECOMMENDATIONS• Do not lose your PIN or password if you change devices.• Check in front of your advisor the installation of the application without teaching the PIN.You can request the PINs or unlocking codes from our email.:::: DOES NOT CONTAIN ADS ::::