Consultant Booking Widget

So I do occasional consulting and a question I get asked is when I'm next available. Sometimes it's immediate, sometimes it's a few months out.

What I would love is to be able to have a widget on my website, similar to widgets people use on Github to let people know if a test suite is passing. The widget would show my next availability, and maybe click through to a more detailed schedule.

So the workflow for me, the consultant, would be to go to this site, enter in my current consulting commitments and then copy/paste an HTML snippet to add to my website.

This seems useful enough for me, I'm wondering if it's useful enough for others.

For sustainability I'd probably put some ads (with a subscription upset to remove them), and maybe more detailed features.