When you shake your smartphone, you hear the frogs singing.Usage, and then install the app, "Shake" to tap the buttons.Then you shake your smartphone, you hear the frogs singing."STOP" when you tap the button, even if you shake ?Kanaku.Twitter website and the author of this app, URL of the blog, has been introduced.Frog call in this application is made ??to record the sound of frogs that are not in the author spontaneously.