The story
A sourdough starter is a pet that lives in a jar and sulks when you forget it. In Surd it finally has a face: Lillesurdej, a small jar who beams when it has been fed, climbs towards its peak, and looks properly offended when it is starving.
The app keeps track of feedings, shows where the starter is in its rise and tells you the hour it will peak, so you know when to bake. From there it has recipes with a bake plan that counts backwards from when the bread should be done, and a dough calculator for hydration, salt and proofing time.
Because waiting for dough takes hours, there is also a small game inside, Gærkolonien, where you grow your own yeast colony. And badges, for people who need a medal for feeding a jar. I am one of them.