Sakamoto_Neko [see blog] uploaded Gift the iPhone/iPod version: [forums.fuwanovel.org]
it’s the English version of Gift that was released on US itunes for a limited time. You can’t buy it anymore, they took it down. Maybe because the translation is unbearably bad?
I actually bought this game on iTunes as well but never got around to playing it. Spoiler: the imouto has yandere tendencies. Japanese version: [iTunes]
Akiba blog wrote here in 2008, it is the first galge ever on iPhone! (which it is)