QSafeChat vs FAAB

Secure. Simple. Fast. QSafeChat is a free messenger for everyone: chat, share photos and videos, post statuses and make voice and video calls — all end-to-end encrypted, with no ads and nothing to set up. WHY "QUANTUM-SAFE"? Most encrypted apps today rely on math that a large enough quantum computer is expected to break. Someone could record your encrypted messages now and try to open them years later — "harvest now, decrypt later". QSafeChat protects against that with post-quantum cryptography (PQC): new encryption algorithms designed to resist quantum computers, standardized by the U.S. National Institute of Standards and Technology (NIST). Every direct conversation starts with a PQXDH key agreement using ML-KEM and continues with a Double Ratchet, so your messages stay private today and tomorrow. SIMPLE TO START • Pick a name and an @handle — that's your identity • Add people by scanning their QR code (or sharing yours as an image), or by @handle • Your phone number is used once to check you are a real person, then discarded — never stored by us, never searchable FAST AND FRIENDLY • Messages, photos, videos, voice notes and documents • Voice and video calls, encrypted on your device • Statuses for your contacts, reactions, replies and disappearing messages • English and Turkish WHAT STAYS PRIVATE • Direct messages, media, statuses and calls are end-to-end encrypted • Your contact list never leaves your device • Everything the app keeps on your phone lives in an encrypted vault, behind an optional PIN or Face ID • No ads, no trackers, no analytics HONEST BY DESIGN Every conversation is labeled truthfully: group chats are currently protected in transit while group end-to-end encryption is in development. INDEPENDENT INFRASTRUCTURE QSafeChat runs on its own servers — no third-party messaging cloud in between. The server only sees sealed envelopes and the routing data needed to deliver them, and you can delete your account and its server-side data at any time from Settings. FREE FOR EVERYONE No invitation, no waiting list, no subscriptions, no in-app purchases. Questions or feedback: mert@qsaferoom.com

FAAB is a quantum-secured messenger from FAAB Group Inc.: direct messages, group chats, voice and video calls, and a sealed vault for your files. Built so the servers that relay your conversations learn as little as possible, and honest about where that protection stops. QUANTUM SECURED • Direct messages between two people are end-to-end encrypted with post-quantum keys that are agreed between the two phones and keep moving as you talk. The servers relay envelopes they cannot open: text, photos, videos, voice notes, files, replies, reactions, edits and deletions alike. • Voice and video calls, one-to-one and in groups of up to 32, are end-to-end encrypted with a key that reaches each person inside their own encrypted conversation. The server still learns who called whom, when, and whether it was voice or video. • Your keys are born on your phone, mixed with quantum-origin randomness captured during sign-up, and your private keys never leave it. FAAB shows you a Key Birth Certificate. FAAB QUANTUM SECURE VAULT Keep photos, videos and files sealed on your phone, each under its own key. Sort them into folders, open them in the iPhone's own viewers, and share one with a link you can turn off at any time. A link opens only inside FAAB, after the person who shared it is added to your contacts. SECURE CLOUD Keep your account, contacts, chats and vault safe if you lose or change your phone. Everything is sealed on this phone first — FAAB can't open it. A new phone signed in to the same Apple account restores it with one tap, and you can add an optional recovery key. WHAT IS NOT END-TO-END • Group chats are encrypted in transit to the server, not end to end. The server stores group history and can read it. Every group in the app is labelled this way. • Even for direct messages, the server sees metadata: who talks to whom, when, and how much. FINDING PEOPLE Choose an @handle. Add people by their @handle, by scanning the QR code on their phone, or from the link it carries; after a scan, FAAB refuses a changed key for that contact instead of silently accepting it. FAAB never reads your address book. ON YOUR PHONE • App lock with a 6-digit PIN and Face ID or Touch ID. • A privacy cover hides the app in the app switcher. • Notifications don't show message text unless you turn that on. • Link previews are fetched by your phone, and you can turn them off. • Share from any app: in Photos, Files or anywhere else, Share › FAAB sends to your chats or saves to your vault. NO ADS, NO TRACKERS No advertising, no analytics and no tracking SDKs. OPEN TO EVERYONE FAAB is free and open to anyone: no invitation, no waiting list, no organization to belong to. INDEPENDENT AUDIT FAAB has not had an independent security audit yet. Until it has, please don't rely on it where a failure could put someone at risk. Delete your account: Settings › Delete all data. Privacy policy: https://app.faabgroupinc.com/privacy Support: https://app.faabgroupinc.com/support