If you would like to launch the app review page of your application so that its easier for your user to navigate there in the app store and write a good review to your app, here is the code snippet
Use this:


[[UIApplication sharedApplication] openURL:[NSURL URLWithString:
@"http://itunes.apple.com/WebObjects/MZStore.woa/wa/viewContentsUserReviews?type=Purple+Software&id=YOUR_APP_ID&mt=8"]];

Replace YOUR_APP_ID with the application ID of your app.

Cheers…!

About Me: Anish Kumar:
Mac OS X software development is my bread winner with over 6 years of experience. Expertise in Color Management, TWAIN Scanner drivers on Mac OS X, Photoshop Filter and Import Plugin development on Mac OS X, iPhone. As an hobby I love to work on PHP, Flex, AIR, Photoshop. Check the 'About' page for more.