Imagine opening a letter from your past self, dated today, that starts: "In 2030, I will...". Time Capsule is a free app where you record a video, write a letter, or upload a photo, seal it, and choose the exact future date it gets delivered to you. Send yourself a message today, five years into the future, making a bold prediction about where you'll be, what you'll have achieved, or who you'll become. The surprise, the nostalgia, the sheer delight of rediscovering your own dreams will be an unmatched gift. What will future you be glad past you remembered to say?