Hoodmaps - Crowdsourced neighborhood 🗺 maps to navigate a city 💫
Future Me - Send an email to your future self
YouMap - The Human Atlas™
Letter to Yourself - Send a physical letter to your future self
Zenly - Zenly is a GPS tracker to locate your friends in realtime.
Timebomb Messenger - Send secret messages that open based on time or location 💣