You can connect your own subdomain (see: What is a subdomain?) to your app so people can access it through a branded website link.
Step 1. Enter your domain
App station > Settings > General
Enter your custom subdomain you want to use and hit Submit.
Step 2. Add the DNS records to your domain host
Copy the DNS record(s) provided and add them to your domain host (e.g. GoDaddy, Google Domains, Cloudflare). If you are unsure how to do this, your domain host should have a help guide.
Below is an example of adding a DNS record for Google Domains, most domain hosts are similar.
Step 3. Save and test
Finally, click Connect in your app settings. It will show the status of your domain connection. Once connected, people will be able to access your app via your branded domain or subdomain.