It understands at once how old it is from year of birth.
The screen is only scrolled until the corresponding one is chosen from four tabs under the screen, and a born year is displayed.
It is "Age after the birthday. " to be displayed. Please displayed age "One years old" pull it for "Before the birthday".
It became a very simple design as a result of applying the focus to examine the age very early.
We will also prepare "Age plus (pay version)" that adds [Japanese 'Eto'], [Years from each Japanese 'Wareki'], [Leap year], and [The age is examined with Wikipedia] functions besides "Age".