Zisty

Zisty is a private messenger for people who already know each other. • End-to-end encrypted: every message is encrypted before it leaves your phone; the server relays ciphertext it cannot read. One-to-one chats add quantum-resistant encryption on top. • Direct when nearby: two phones close to each other talk over Bluetooth and peer-to-peer Wi‑Fi, through no server at all. • No sign-up: no phone number, no account. Your identity is a key pair that lives on your phone. • Friends, one by one: scan each other's code in person, send an invite link, or have a friend introduce you. Your address book is never read. • Messages delete themselves: each chat sets its own retention, from burn-after-reading to 9 hours, counted from the moment a message is seen; unseen messages stay on the server for 5 days at most. • Voice and video calls: end-to-end encrypted, direct when nearby, and you can answer…