(NEWSER) – Some Apple users are sick of the company's new iOS 7 operating system. Literally. The new zoom and slide animations, and the 'floating" icons on the home screen, are causing motion sickness in many people with vestibular disorders—conditions that affect balance and vision, the Guardian reports. "I now have to close my eyes or cover the screen during transitions, which is ridiculous," says one app developer, who reports headaches and other symptoms associed with motion sickness. "Tap an app and it's like flying through the icon and landing in that app's micro world—and I'm getting dizzy on the journey there."