Point of sale, on iPad, in ~2011. Massively differentiated from Square / VC competitor land via doing a bunch of restaurant specific stuff early.

Trick with the $1M number is a site license was $999 and receipt printers were sold ~at cost, for $300. 1_000_000 / ((2 x 300) + 1000) ~= 500 customers.

Now I'm doing an "AI client", well-designed app, choose your provider, make and share workflows with LLMs/search/etc.