You can also opt to use your own servers/devices for hosting with the Service Queue project. Traffic can be relayed through a provided Wireguard VPN to direct subdomain or port traffic to your server
Cloudflare offers a similar service called [Cloudflare Tunnels](https://www.cloudflare.com/products/tunnel/) though this requires you to have a domain that you have purchased. There is however offer a free offering to try at [try.cloudflare.com](https://try.cloudflare.com/). This URL however is ephemeral (not permanent and may change) and is limited to one domain. This may require more work on your end especially for Frontend/Backend API setups as endpoints may change.