I'm Dan Millen — a solo developer in Florida, 25 years in.

I've spent most of my career building software for other people — a quarter century of platforms, teams and roadmaps I didn't write. Eleven30 is the part I do for myself: a collection of personal projects, built because I wanted them to exist.

Both apps started as small irritations. The tip calculator came from watching my wife juggle two or three separate apps at the table — one with a full-screen ad standing between her and the answer — just to work out what to write on the receipt. The launch app came from missing a launch I could have watched from my own driveway.

Same instinct either way: do the arithmetic for the person, and show your work.

I answer the support email myself. There's no team behind the address.