We (me and a friend of mine) used tunnelling services to host our side projects such as ngrok or CF tunnels. But there was always one issue - downloading, installing, and configuration took time and effort.
Our use case was simple: get public URLs to a device such as a Raspberry Pi, or our old desktop PC turned into a server, or a new cloud instance where we did not want the headache of pointing a domain.
So the idea was a HTTP / HTTPS tunnelling service that gives public URLs with a single command without downloading anything. This led us to develop https://pinggy.io