OrangeWalrus, an aggregator for trivia nights (and other events) in SF
Local event aggregator for SF when Eventbrite, Meetup, Ticketmaster already exist.

Swipe an event card left to archive it (that will archive all future events with that same name), tap for details with a Google Calendar link.
Go to settings to deselect the libraries that are too far from you.
Local event aggregator for SF when Eventbrite, Meetup, Ticketmaster already exist.
TaskRabbit for photos, but waitlist-only and limited to San Francisco.
Maps where films actually shot and calculates how fast characters must've moved — turns a small gripe about Hollywood geography into a clickable, oddly addictive exploration. The left-hand film roster, map pins, walking-tour generator and 'impossible speed' math make it both shareable and nerdy-fun; built client-side with Leaflet/Mapbox, so interactions feel snappy. Expand to TV, per-scene screenshots, or richer filters and this could be a long-lived fetish site for cinephiles.
AI-transcribed P25 radio feeds for SF when Broadcastify only streams audio.
650k parking tickets matched to blocks tells you exactly when tickets land on your street.
Census-grounded synthetic people living in real-time—why didn't this exist before?