From your contacts, You can view ages of your Family or Friends.
You can select Calendar type from Gregorian, Buddhist, Hebrew, Islamic or Japanese, then ages and birthdays are calculated with selected calendar.
Icon BadgeNumber shows the number of birthday coming people.
Show Wikipedia contents about Birth Year or Day.
You can select "Safari" (© Apple) or "Wikiamo" (© Satoshi Nakagawa)as Wikipedia browser app.(You need to install "Wikiamo" before you use this option)