It's not really necessary to compile a list of reverse harem games on iTunes. On the Visual Novel Database, you can filter the results by platform, tag, language, and more. They currently have most of the games you mentioned. Just filter by system (Apple iProduct), the tag "otome game," and English as the language.
Don't forget
Alcy's game Pokeboy. Give it a chance if you're interested. If you browse around iTunes a bit, you can find some romance games with a more western aesthetic. For instance, a group called Silicon Sisters made a game called
School 26, and it already has a sequel. Their content is more about communication and friendship, but you may want to look into it. And for a game which emphasizes simulation, there's
My Virtual Boyfriend. (As I said in another thread, the creators included an optional "zombie mode" for some reason...)
Thanks for mentioning Precedent Maker. I thought it was a Windows exclusive, but here's its listing on iTunes:
http://itunes.apple.com/us/app/preceden ... 80485?mt=8EDIT: I found a game on iTunes called
Purelove, from a company called Koyonplete. It is free and is *allegedly* in English, but judging from the screenshots, none of the text is actually in English. I've seen a number of other visual novels on the App Store which are stated to be in English, but I always look at the screenshots to see if there's any writing which has been translated.