An offline-first journaling app for backcountry trips. You write on the trail, the app waits patiently for service, and your laptop catches up when you're home. Built around a CRDT so two devices can disagree without losing anything.
A browser tool for designing print-quality contour maps. Pulled USGS data, let you re-style every line and label, exported a PDF you could hand to a printer. Used by a few national parks and one very enthusiastic ski patroller.
A small watch app that reads heart rate, grade, and time on feet — and tells you when to back off before you blow up. Released to ~6,000 weekly users. Quietly retired when the platform changed underneath us.
An end-of-year book of essays, route notes, and photographs from the year. Set entirely in Helvetica & Times, printed on a Riso, distributed by mail. 250 copies, the last ones still floating around.