Radiation Shielding Calculator

an android app that is published to facilitate .radiation shielding calculation .
its available on google play as two version paid & free(limited)

you can take a look on it at :
https://play.google.com/store/apps/details?id=ghojah.radiation.radiationshielding
https://play.google.com/store/apps/details?id=ghojah.radiation.radiationshieldinglimited