Senko hanabi is a traditional Japanese hand-held sparkler firework.
When speaking of Japan, Geisha, Mt. Fuji and Samurai will come to mind.
But when speaking of summer of Japan, it has to be the Senko hanabi.
This iPhone app is created aiming to precisely reproduce the sparkler.
[ How to use ]
Touch the screen to light the sparkler.
And then, just watch it quietly.
Hold your device gently and please do not shake it.
The sparkler is very delicate.
If you shake it, the firework will die down.
If the firework ends, touch the screen,
and you can enjoy it once again.