In developmentPostGIS · offline tiles
InnORMaps
Offline-capable mapping for water, trails, offroad, and air — where Google Maps stops.
What it is
Navigation for anywhere Google Maps won't take you. A progressive web app for boaters, hikers, offroad drivers, divers, and drone pilots — no hand-holding, no safest-path routing. Show everything, let the person decide.
It switches layer sets by activity: nautical charts and depth contours for boating, trail networks for hiking, and live vessel tracking over AIS. It installs to a phone home screen from the browser with no app store, and it keeps working when the signal doesn't — which is the entire point, because the places it's built for are the places without coverage.
The parts that were hard
- Offline map tiles cached through service workers — the product is useless if it needs a signal to work where there isn't one
- PostGIS for real geospatial queries rather than approximations over latitude and longitude
- Vector rendering with MapLibre across layer sets that swap by activity mode
- Live vessel tracking ingested from AIS
- Installable PWA on iOS and Android with no app store in between
Need something built at this level?
You talk to the person who writes the code — about the architecture, the trade-offs, and what it costs. Two questions to start, and a reply within one business day.