I have to use it once a week, but since it requires filling daily slots, I think it qualifies too: NetSuite time tracking. It's just database internal structure

I have to use it once a week, but since it requires filling daily slots, I think it qualifies too: NetSuite time tracking. It's just database internal structures exposed to end user with no business logic layer whatsoever. ADP is even worse, but I don't use it daily.