Finnish calendar

Finnish Calendar is a productivity extension that integrates with your system calendar. Features include week numbers, Finnish holidays, flag days, calendar filtering, event search, and easy add/edit. It also offers a separate week view in landscape and uses the device's calendar storage so changes sync across devices and apps, including the default iOS Calendar. It supports iPhone and iPad.

In-app purchases unlock Finnish name dates and moon phases. Name dates are available for every day at least until the end of 2020, and moon phases are calculated daily up to the end of 2020 and shown in a separate moon calendar.