・Even though I know I need to sleep, I can't stop using my smartphone...
・If I don't have a reason to close my smartphone, I end up staring at SNS endlessly...
This is an app that allows such people to close their smartphones naturally!
This app will send you a notification of the "light of fireflies" at the time you set.
When you listen to the light of fireflies streaming from your smartphone, you will naturally feel like ``turn off your smartphone and go to sleep!''