Drop encrypted messages, art, and ephemeral content pinned to real-world GPS coordinates. Only visible through the lens, only found by those who walk there.
Pin photos, text, and drawings to GPS coordinates. Content floats in augmented reality, discoverable only when you walk to the exact spot.
Every drop is encrypted before it leaves your device. Zero-knowledge architecture means nobody — not even us — can read your messages.
Set expiration timers on your drops. 24 hours, one week, or until the first person finds it. Digital graffiti that fades like the real thing.
Get notified when you're near undiscovered drops. Your phone buzzes with possibility — someone left something here for you to find.
Follow creators, discover trending drop zones, react to what you find. A social network where the feed is the world around you.
Drop zones form organic clusters — like geodesic nodes on a map. Explore your city's hidden layer of digital expression.
Phone dying at a festival. Leave a drop your friends can find.
Cryptographic signatures prove you were there. Tamper-proof. Geolocated. Timestamped.
Evidence that can't be faked or denied. For journalists, activists, witnesses.
Drop City is fun AR graffiti and critical infrastructure. Both matter. Help us build it.
Capture a photo, type a message, or sketch a drawing. Choose how long it lives — hours, days, or until someone finds it.
Your drop is encrypted and anchored to your exact GPS coordinates. It exists in augmented reality, invisible to the naked eye.
When someone walks near your drop, their phone alerts them. They open the camera, point, and your message materializes in AR.
We're building Drop City with a small group of early explorers. Sign up for TestFlight access and be among the first to leave your mark.
iOS 17+ required · No spam, ever · Spots are limited
Trinidad, Colorado · 1960–1979
The first rural hippie commune. Four art students bought seven acres of desert and built geodesic domes from car roofs. They won Buckminster Fuller's Dymaxion Award in 1967. They called their art "droppings" — impromptu performances and constructions dropped into the landscape.
"The land is forever free and open to all people."
— Drop City deed stipulation