With every Beezer app, you are provided with a web link to share your app.
This means your app will be accessible from a URL like https://mygreatappname.beezer.com/
When users open the link on their mobile browser they will have the opportunity to install the app.
If you want to use your own domain name, you can create a redirect using your domain provider.
The beezer.com subdomain is shown when you share the link or when the user first views the app in their browser. It is then hidden when the app is installed and the user launches the app from the mobile's homescreen.