One day, I needed to take care of my friend's dog named Ghost. I brought him to Central Park in New York City to take a walk with. However, it was difficult to find dog-friendly area. And then, I and my friend tried to have a lunch, but also it was hard to find dog-friendly restaurant which has terrace area for dog. After these experiences, I imagined, it will be really difficult to find dog-friendly places, if a dog owner is a newbie to the city. It was the starting point of this app idea.