Post Spatial

Post lets you leave digital notes on real buildings. Walk up, point your phone, hold to charge, and drop your message right onto the surface. It stays anchored there in 3D space for anyone else to find. We built Post on top of Google's ARCore Geospatial API and their Visual Positioning System. That means the app recognizes the actual visual features of buildings around you and matches them against Google Street View data to figure out exactly where you are, down to about a meter. Your notes are not just floating in space. They are locked to real GPS coordinates and altitude, and they survive between sessions and across devices. HOW IT WORKS Open Post and point your iPhone at a building. The accuracy badge in the corner will turn cyan once the Visual Positioning System has locked on (usually takes about 2 to 5 seconds). A reticle in the center of your screen snaps to the building…