The Gerarduskalender is a day tear calendar and a kind of almanac. With this calendar you get 'a little spirit every day'. Each day has a spell on the front. In addition to the sun and moon phases, a large number of saints' feast days are mentioned.
On the back, jokes and language jokes are interspersed with reflection, puzzles and information in all kinds of areas.
At start-up, the calendar shows the current day (in the relevant year) and gives you the option to browse through the leaves or look up a specific date. Front and back can be shown.
A so-called 'Activation time' can be set, at which the app becomes active every day and the calendar sheet of that day can be easily displayed.
It is possible to share calendar sheets (front and/or back) with others via e.g. Twitter, Facebook or e-mail.