From the set birth date, it is a mushroom application to calculate the age (Man'nenrei-East Asian age reckoning) in the current. As a bonus, we've put the ability to calculate the number of days elapsed from the 17-year-old.
※ After start-up, set the birth date, please click on the button of the age where you want to insert. ※ birth date that has been set is saved, it will be the initial value of the next time you start.
It is also possible to boot from the launcher, the age that you selected in the case that will be copied to the clipboard.