Software/app testing (manual or automated) is always a killer app for stuff like this. And my anecdotal observation of HN over the years is that most of HN doesn't get the point when it comes to anything that could be a killer testing tool. Running browsers on desktop OSes in the cloud? I don't get it! (My first startup) Robots to automate tapping on phones? I don't get it! (My second startup)

I'm not surprised people don't understand the value of something like Cophone. It doesn't mean the value isn't there. It just means they probably don't spend enough time dealing with software testing issues to see the potential.

Haha, only time will tell. But there are already some patterns that can guide me further, so I appreciate all the feedback and try to learn from it.