1.跳转App Store下载应用:

[[UIApplication sharedApplication] openURL:[NSURL URLWithString:@"itms-apps://itunes.apple.com/app/idAPPID"]];

2.跳转到App Store评分

[[UIApplication sharedApplication]openURL:[NSURLURLWithString:@"http://itunes.apple.com/WebObjects/MZStore.woa/wa/viewContentsUserReviews?id=APPID&pageNumber=0&sortOrdering=2&type=Purple+Software&mt=8"]];

替换掉APPID即可