I am back

It is an app that informs that an elementary school child has returned home.
In order to use GPS, please enable this app to use GPS.
Please set to "Always" or "While Using the App".
The measurement starts after the selected time below the Start button.
If it starts right away, you will go home the moment you press the Start button at home.
The notification method is SMS, but it can not be sent automatically.
When this app senses that your child has returned home, the message app is displayed and your child simply presses the send button.
It can be used by children who cannot input characters.
After sending, please stop with the Stop button so that the battery does not run down.
Please press the Start button again the next morning.