GeoWhisper

Concept

GeoWhisper (a.k.a. Ghost Notes) is a location-aware app for leaving ephemeral digital notes tied to a place. A note only becomes visible to other users when they are physically near the spot where it was dropped, and it disappears once it has been read enough times or after a given amount of time.

The app sits at the intersection of three ideas:

• Social network ? users create and discover content from others.
• Geolocation ? content is anchored to coordinates in the real world.
• Ephemerality ? notes are short-lived by design, which encourages spontaneity and presence over permanence.

Why it's interesting

Most social platforms reward content that lives forever and travels globally. GeoWhisper does the opposite: messages are bound to a place and a moment. This creates new use cases:

• Leaving a tip for whoever sits at this café next.
• Dropping a memory at a meaningful spot for a friend to find later.
• A treasure-hunt style game where notes hint at the next location.
• Anonymous local micro-communication ("the queue is huge today, go around the back").

Built With

• claude
• javascript
• leaflet.js
• openstreetmap
• ruby
• ruby-on-rails
• sqlite
• stimulus
• turbo