Direct "rate in iTunes" link in my app?

This IS possible using the technique described on this blog:

http://www.memention.com/blog/2009/09/03/Open-Reviews.html

basically you call UIApplication openURL with the following:

NSString* url = [NSString stringWithFormat: @"itms-apps://ax.itunes.apple.com/WebObjects/MZStore.woa/wa/viewContentsUserReviews?type=Purple+Software&id=%@", myAppID];[[UIApplication sharedApplication] openURL: [NSURL URLWithString: url]];

To get your app ID before your app is available in the app store, use iTunesConnect to define your new app - give it a name, description, icon, screenshots, etc. Once defined, you can get the Apple ID from the Identifiers section for the app.

EDIT:

Here is a secondary url/method that works:

NSString* url = [NSString stringWithFormat:  @"http://itunes.apple.com/WebObjects/MZStore.woa/wa/viewContentsUserReviews?id=%@&pageNumber=0&sortOrdering=1&type=Purple+Software&mt=8", appid];[[UIApplication sharedApplication] openURL: [NSURL URLWithString: url ]];

I believe the difference between the two is that the first technique (itms-apps://) will launch the App Store app directly while the second one (http://) will launch it indirectly via a redirect resulting from the http web URL. This would have to be confirmed; this is only my recollection.

Answers here are outdated.

This works on my end (Xcode 5 - iOS 7 - works only on Device, not simulator!):

itms-apps://itunes.apple.com/app/idYOUR_APP_ID

For versions lower than iOS 7 use the old one:

itms-apps://itunes.apple.com/WebObjects/MZStore.woa/wa/viewContentsUserReviews?type=Purple+Software&id=YOUR_APP_ID

Simple method that I am using is;

 -(void)rateApp {     [[UIApplication sharedApplication] openURL:[NSURL URLWithString:[@"itms-apps://itunes.apple.com/app/" stringByAppendingString: @"id547101139"]]]; }