Works well, nice design.
Personally, Id like to have a "today" view or be able to sort items: todo today first, the rest after. I also tried to change due days, and the app recalculated hits and misses based on the new schedule. Thats slightly weird.
Anyway, it works for tracking activities, and it works best for stuff youd want to do everyday.
KateSheveleva about Wonderful Day, v1.5