Seal is an iPhone app for the letters and passwords your family will need after you die. Write envelopes for the people you love, seal them with real cryptography (no backend, no account, open source), and they open automatically after a long silence from you. New in 1.2: your family doesn't need an iPhone anymore. Anyone holding the security key can open their envelopes from any browser at sealmessenger.com. Free to try, $29.99 lifetime.