こちらでiPhoneアプリを比較してました。
http://gizmodo.com/5367026/iphone-navigation-app-battlemodo-part-ii-the-best-cheap-gps-app

そこでのコメント。

The site has a design that would make Jon Ive spin in his grave (were he dead). Not only is it crowded and noisy, but there is too much ambiguity (not one but two get-started pop-up menus) and lack of feedback: After planning a trip you select a gas station from the quick-stop menu—does it cancel the original trip? Or just add the gas station? It sure as hell isn't going to tell you. Some of this becomes apparent with use, but it's still a design flaw.

■Spin in his grave
「陰で泣くことになる」といった感じか？→Yahoo辞書より

■ambiguity
あいまいさ