[azepoi]

Most hard pressed cheeses (think comté, beaufort, gruyère, gouda) are around 10L/kg, Parmigiano reggiano is more like 15L/kg, so I think the app underestimate it, unless by Parmesan you mean not the real deal

Obviously dryer cheeses are more dense and require more milk per kg as they age

The cheese choice is severly lacking :) The milk type choice is nice, as Cow's milk contains more water compared to goat or sheep's

[zilti]

I doubt anything there is "the real deal", "Swiss" isn't a kind of cheese either