I do not have access to real-time information, including details about specific apps like "com.hay.android". Therefore, I cannot provide a description, features, advantages, usage guide, user reviews, or instructions for this app. To get this information, you should try searching for the app name in app stores (like Google Play or the Apple App Store) or searching online for reviews and information about the app. My response would be purely speculative without access to the app's actual data.

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