The app reacts with a normal web server like Apache or Nginx. The required switch-API can be built by follwing example php file.
The app "Home Switch" uses permission which are needed for functionality only.
Die App "Home Switch" verwendet nur Rechte welche für die Funtion benötigt werden.
No data is collected. No data is transferred to anywhere.
Es werden keine Daten aus dem Gerät erhoben. Es werden keine Daten weitergegeben.
If the server access shall be done protected (https) and a certificate with a CA signature is not available, a self signed certificate can be used. How this can be setup is described in application note HTTPS with self signed certificate on Android
The application note no Domain - use of ownDNS describes the functionality, setup and use of ownDNS if you want to use this app built in function.