VoidSend vs Between

VoidSend is a zero-knowledge encrypted messenger built for a post-quantum world. Every message, file, and call is encrypted on your device before it ever leaves — our servers act as a blind relay, mathematically unable to decrypt your data. ZERO-KNOWLEDGE ARCHITECTURE Unlike other messengers that promise privacy, VoidSend's Blind Relay design means the server only ever sees encrypted blobs. No plaintext. No metadata leaks. Your encryption keys never leave your device. POST-QUANTUM ENCRYPTION VoidSend uses hybrid encryption combining X25519 with ML-KEM-768 (Kyber), protecting your conversations against both today's threats and tomorrow's quantum computers. Messages are sealed with AES-256-GCM, and identities are verified with ML-DSA-65 post-quantum signatures. MESSAGING • End-to-end encrypted direct and group messages • Disappearing messages (5 seconds to 7 days) • Encrypted file sharing with automatic 24-hour server-side deletion • Emoji reactions, replies, and typing indicators • Message search across your conversation history VOICE & VIDEO CALLS • Peer-to-peer WebRTC audio and video calls • Optional post-quantum encrypted media streams • Call history WEB3 PAYMENTS (Only available on www.voidsend.xyz) • Built-in multi-chain wallet: Ethereum, Base, and Solana • Send and receive ETH, USDC, USDT, SOL, and SPL tokens • Wallet derived from your encryption seed — one identity, one key PASSWORDLESS AUTHENTICATION • Sign in with your crypto wallet (EIP-712 signature) • Or use Face ID / Touch ID with Passkeys • No email. No phone number. No passwords. Just you. STORIES & PROFILES • Share ephemeral photos and videos with your contacts • Custom avatars and usernames • Online status visible only to mutual contacts PRIVACY BY DESIGN • No data collection beyond your username and encrypted data • Block contacts and control who can message you • Cross-platform: your encrypted identity syncs seamlessly across all your devices VoidSend doesn't ask you to trust us — it's built so you don't have to.

Welcome to Between, the chat application built from the ground up for ultimate privacy and security. Unlike traditional messaging apps that route and store your conversations on central servers, Between is entirely decentralized. By utilizing advanced WebRTC technology, Between establishes a direct, secure, peer-to-peer connection between you and your contacts. Once connected, your data travels directly from your device to theirs with no middlemen, corporate servers, and no tracking. TRUE PRIVACY Your messages are for your eyes only. Every message and image sent through Between is heavily encrypted end-to-end. We don’t have access to your messages, we don't track your usage, and we don't sell your data. NO ACCOUNTS REQUIRED Say goodbye to handing over your phone number or email address just to send a message. Between generates a secure, cryptographic connection ID locally on your device. Just share your ID with a friend, and you’re ready to chat. YOUR DATA STAYS WITH YOU Your chat history and contact list are stored securely and locally on your own device. You have full control over your data and can completely wipe your local database at any time with just a few taps. FEATURES: Direct P2P Connections: Lightning-fast messaging through WebRTC data channels. End-to-End Encryption: Keeps your conversations secure. Built-in Contacts: Save your friends' connection IDs with custom names and profile pictures. No Central Storage: If it's not on your phone, it doesn't exist. Modern & Intuitive: A beautiful, native iOS experience designed for simplicity. Open-source: view and verify the code at any time. (Note: Between requires an active internet connection to establish the initial peer-to-peer handshake.)