It is a timer born from the illustration image of illustrator matsug living in Kyoto, Japan. You can enjoy the matsugs illustration world andt the unusual call sound from the regular timer.
You can choose the sound of a normal bell, "Yoh! Pong! Popopong!" Or the normal call bell sound. You can also inform you by vibrating the iPhone itself without sound.
Since it can make up to 3 consecutive calls with different sounds, it is also useful as a timer for the timekeeper.