HomeChat vs Prime Messaging

HomeChat is a secure messenger with full end-to-end encryption. Exclusively private one-on-one communication — no groups, no channels. 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. Own built-in tunnel - 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 - Message reactions — (not available in Telegram's Secret Chats) - 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 - Your account and all your chats are tied to a single device - Push notifications and VoIP calls work in the background - Supports iPhone and iPad

Chat beyond the internet. Prime Messaging is a modern messenger built to keep people connected when traditional connectivity fails. Send messages, stay close to your friends, and keep conversations going with or without internet access. Whether you're traveling, dealing with weak signal, or simply need a more resilient way to communicate, Prime Messaging is designed to make messaging feel simple, fast, and dependable. Features: • Private one-to-one messaging • Group chats for friends, families, and teams • Messaging that works even when internet access is limited • Clean, fast, and distraction-free experience • Simple interface built for everyday communication • Reliable connection experience for real-world use Why Prime Messaging: Most chat apps stop when the internet stops. Prime Messaging is built differently. It helps you stay connected beyond traditional limits, so your conversations can continue when they matter most. Stay connected. Stay reachable. Chat beyond the internet.