HomeChat vs PrivaMesh

HomeChat is a secure messenger with full end-to-end encryption. Private one-on-one and group chats — no channels, no public spaces. Who HomeChat is for: - Family and loved ones - Lawyers, doctors, entrepreneurs - Crypto traders - Anyone who doesn't trust big platforms PRIVACY HomeChat encrypts everything — text, media, reactions, and call signals — directly on your device. The server does not store messages and never has access to your conversations. Decrypting data without the keys on your device is impossible. HomeChat includes a built-in proxy tunnel — a fallback channel used when the direct connection to our server is unavailable. When needed, the app uses an internal secured route to reach HomeChat's own server. It does not affect other apps and is not a system VPN. It can be enabled manually with a single tap. - No phone number, email, or personal data required to register - No ads or third-party analytics - No personal data collection - Encrypted media files are automatically deleted from the server after 7 days - Delete your account at any time with one tap - App PIN — independent cryptographic protection, separate from the phone passcode. Without the correct PIN, app content is inaccessible even on an unlocked device - Panic code — instantly and irreversibly destroys all data within the app with no trace and no possibility of recovery FEATURES - Text messages, photos, videos, audio, documents (max file size — 100 MB) - Video messages (video circles) - Voice calls - Video calls - Group chats with manual invite approval - Message reactions - Statuses: sent → delivered → read - Presence indicators: online / offline / removed from contacts - Custom stickers, ringtones, and wallpapers - Light and dark theme support - Ability to chat during a call SECURITY Encryption protocols: - X3DH + Double Ratchet (Signal protocol) on Apple CryptoKit - AES-256-GCM for all data types - Ed25519 for signing, X25519 for key exchange - Forward Secrecy — compromising one key doesn't reveal past conversations Calls: - WebRTC over self-hosted STUN/TURN servers - Direct P2P connection via STUN (when possible), TURN as a fallback channel - Call signaling (IP addresses, SDP) is additionally encrypted - DTLS/SRTP protection for the voice stream Transport: - WSS (WebSocket Secure) + TLS + Certificate Pinning (SPKI) — protection against MITM attacks On-device data: - Messages stored in an encrypted SQLite database - Session keys in the iOS Keychain (ThisDeviceOnly) - Media files excluded from iCloud backups - Session rollback protection (used encryption keys are destroyed immediately and cannot be recovered) Push notifications: - Message content never enters the push payload - VoIP Push only carries the caller's identifier NOTES - Works in Russia - Push notifications and VoIP calls work in the background - Supports iPhone and iPad

Private messaging without a phone number, email, or company-run account server. PrivaMesh is an end-to-end encrypted messenger for iPhone, built for conversations that should never become someone else’s data. Your identity, contacts, encryption keys, and chat history stay on your device. NO PHONE NUMBER OR EMAIL Create a private identity without linking a SIM, email address, or contact list. Friends find you by nickname, and your address book is never uploaded. NO COMPANY-RUN MESSAGE SERVER PrivaMesh does not operate an account server or message database. Encrypted messages travel through a public, decentralized transport and can be read only on the intended recipient’s device. END-TO-END ENCRYPTION Every message is encrypted before it leaves your iPhone. X3DH establishes secure sessions, the Double Ratchet generates a fresh key for every message, and AES-256-GCM protects content against reading or tampering. Forward secrecy helps protect earlier messages even if a key is compromised later. METADATA PROTECTION One-time delivery addresses, cover traffic, and fixed-size padding are designed to reduce exposure of who you contact, when you message, and how much you send. There are no ads, trackers, or in-app analytics. YOUR DEVICE, YOUR KEYS Encryption keys are stored in the iOS Keychain and protected with Face ID or Touch ID. Your recovery phrase can restore your identity on another device. Chat history intentionally stays local and is not restored. PRIVATE MESSAGING THAT FEELS FAMILIAR • Private one-to-one conversations • Nickname discovery without phone numbers • Disappearing messages • Search, message details, block, and report controls • A private visual view of your contacts • No contact-list upload OPEN SOURCE BY DESIGN PrivaMesh’s source code and protocol are public for inspection. Privacy should be verifiable in the architecture, not dependent on a company promise. Install PrivaMesh and keep your conversations private by design. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/