Three years ago, my friends and I said "let's come back here in 5 years." We never did. TimeCapsules fixes that. What makes it different: You literally can't open capsules early - no exceptions Create with friends = everyone must be present IRL to unlock Lock to locations - discover memories left by strangers when you visit Gamification - earn badges for creating and discovering capsules Most apps let you cheat. This one forces you to keep promises. Free. No ads. iOS only (for now).