German customers, especially software users, speak of the Bananenprinzip, the banana principle. Bananas are harvested green and ripen later. In the same way, a product is delivered unfinished and matures over time through customer feedback and the maker’s repairs. The saying is Das Produkt reift beim Kunden, the product ripens at the customer’s. The term is negative. A user who speaks of Bananensoftware is unhappy with it.
One definition adds a detail. The customer receives the unfinished product ohne entsprechende Hinweise, without being told.