8.3: Apps which appear confusingly similar to an existing Apple product or advertising theme will be rejected 8.3
We found that your app uses rounded corner icons, which is not in compliance with the App Store Review Guidelines.
Please see the attached screenshot for more information.
We encourage you to review your app concept and evaluate whether you can incorporate different content and features that are in compliance with the Guidelines. For app design information, check out the videos: "The Ingredients of Great Apps" and “Designing User Interfaces for iPhone and iPad Apps,” available on the iOS Developer Center, and the iOS Human Interface Guidelines in particular, the sections, "Great iOS Apps Embrace the Platform and HI Design Principles" and "Human Interface Principles".