--- ↓リジェクト理由の原文 ---
We found that your app only provides a very limited set of features. It only provides a simple game with no additional features. While we value simplicity, we consider simplicity to be uncomplicated - not limited in features and functionality.
We understand that there are no hard and fast rules to define useful or entertaining, but Apple and Apple customers expect apps to provide a really great user experience. Apps should provide valuable utility or entertainment, draw people in by offering compelling capabilities or content, or enable people to do something they couldn't do before or in a way they couldn't do it before.
We encourage you to review your app concept and evaluate whether you can incorporate additional content and features to be in compliance with the Guidelines. For information on the basics of creating great apps, watch the video The Ingredients of Great Apps.If you feel we didn't understand the features of your app, or that we missed key functionality, and your app was incorrectly rejected, you may appeal to the App Review Board.