I\'d like to be able to determine which store the user connects to from inside my app, so that I can direct them to some appropriate content for their device AND store. Doe
You should probably use
[[userDefaults dictionaryRepresentation] objectForKey:@"NSLocaleCode"];
This will return a language code like en_US or en_UK or en_AU or even zh_CN, zh_MY, jp_JP and so on.
Parse the correct codes which you support and direct them accordingly.