※Cautions!
Because using a private API, some of device does not correspond.

Asks you to turn on tethering(Wi-Fi hotspot) In the pop-up when started charging.
Turn off tethering(Wi-Fi hotspot) automatically when stopped charging.
Launching your application after install, and checkbox enable.

"Advanced settings"
When charging is started,can select from "Pop-Up" or "Auto Wi-Fi hotspot" or "Auto USB tethering".

Because it isn't widget, doesn't always reside.

At your home to use as Wi-Fi hotspot connected to charger...
I not want to use widget. But often to tethering...
Please use at such timing.