I don't think Apple reject apps that leak "a bit". There's this older discussion on SO: http://stackoverflow.com/questions/1136511/does-apple-reject....
If you leak fast your app is unlikely to "not crash" and "remain responsive".
If you leak fast your app is unlikely to "not crash" and "remain responsive".
So perhaps what I said should be amended to say: "Your app does not leak memory, at least because of any code you wrote".