Japan Radio Map is a free Android app developed by Yamaneko-sha, which provides a unique way to listen to local radio stations across Japan. The app has a map interface, which makes it easy to find and select a radio station near you. The app also allows you to set your favorite radio station as the default station by long-pressing the info window.

One of the best features of the app is the ability to listen to local dialects from various parts of Japan. It is also an excellent tool for learning about different cultures and collecting information about various regions in Japan. The app is simple to use, and after selecting your preferred station from the map, you can listen to it by tapping the play button. Additionally, you can access your favorite stations from the list icon and set your favorite station for easy access.

Overall, Japan Radio Map is an excellent app for those who want to experience Japan's local radio stations and learn about different dialects across Japan.