VoidSend vs APPEIRON

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.

APPEIRON is a privacy-first encrypted messenger — security you can see. Chat and call with end-to-end encryption designed so only you and your contacts can read the content. No phone number or email account is required: your identity is created locally on your device. KEY FEATURES • Encrypted messaging — text, photos, voice, and video • Voice and video calls with WebRTC • Quantum Vault — encrypted local storage (Pro+) • Security Health — entropy and crypto status you can check • Proof-of-Read seals and VoiceGuard caller verification • Dead Man’s Switch — basics on Pro+; encrypted backup options on higher plans • Mesh mode for nearby communication when internet is limited (Pro+) • Optional group chats and team features on higher plans PLANS • Base — one-time purchase: chats, contacts, and 1:1 calls • Pro+ — one-time purchase: Vault, Mesh, and advanced privacy tools • Guardian — one-time purchase: guardian protection • Team — subscription with a 7-day free trial Purchases are handled through the App Store. The Team subscription can be canceled in Apple ID settings. Privacy Policy: https://appeiron.app/privacy More: https://appeiron.app/