To install as a Progressive Web App (PWA) on your mobile, with Chrome, click The Three Dots and then Install App. With Edge, Click The Three Bars then Add To Phone. With Firefox Click The Three Dots then Install. With Safari, Click The Share Button then Add To Home Screen (Scroll down the popup). No need to visit Play Store or App Store.
SSL not working on Apache
I cannot get my SSL certificate to work on apache web server.
If your ssl certificate doesn't work in apache, try putting your ip address in VirtualHost.
Apache web server is free open source web server software for Linux and Windows.