The Retina Difference is a free App which demonstrates the sharpness of the new iPhone 4 iPod touch Retina display by showing the difference of optimized vs. unoptimized grahics on the iPhone 4 4th generation iPod touch. nnA musthave for all iPhone 4 new iPod touch owners to show off the outstanding display capabilities to your friendsnnThe nine examples in this App each show a splitscreen with an unoptimzed image in standard iPhone resolution on the left side of the screen and an optimized image in iPhone 4 resolution, iPhone 4 new iPod touch only on the right side of the screen so you can tell the difference right awaynnDescription of the examples included in the App:nnLinesPattern: Shows three test patterns of lines and dots, starting by 1 pixel, 2 pixel, 3 pixel width up to 4 pixel widthnnGfxTextGfx: Shows three pages of graphical bitmap text text rendered on the background image in different font sizes.nnPhoto: Shows three photographs for comparison.nnSee the amazing difference for yourself on your iPhone 4 4th generation iPod touchnnAlso included is a color blindness test. This test can and will not replace any medical examination but is a good indicator to find out if you are color blind. If you fail any of the tests please consult your physician for a checkup of your eyes.nnTo all people who assert that the standard resolution half of the screen has been deliberately made to look bad: This is NOT the case nIf you cover the right side of the screen the left side will not look bad but compared to the 4x better resolution of the Retina display it indeed does look worse And that's exactly what this App is aboutn