# Tunnel Messenger — Encrypted by default > End-to-end encrypted private messaging with quantum-safe security and no phone number required. (iPhone/iPad app by Francesco Tripepi.) - Source: https://appshunter.io/ios/app/tunnel-messenger/id6762237555 (this page in markdown: same URL + `.md`) - Developer: [Francesco Tripepi](https://appshunter.io/developer/1646548699) - Category: Social Networking, Productivity - Price: Free - Rating: 5.00/5 from 3 App Store ratings · 1 written reviews indexed - Age rating: 4+ - Requires: iOS 26.0 · 24 MB - Languages: English - Released: 2026-04-18 - Data updated: 2026-06-26 - Monetization: free - User reviews in markdown: https://appshunter.io/ios/app/tunnel-messenger/id6762237555/reviews.md ## What is Tunnel Messenger? Tunnel — Private Messaging by Design Tunnel is a secure messaging app for people who care about privacy. Every conversation is end-to-end encrypted, every account is protected by a cryptographic identity you control, and there is no phone number or email required to sign up. WHAT MAKES TUNNEL DIFFERENT • End-to-end encryption on every message, photo, file, and call — Tunnel servers never see your plaintext content. • Quantum-safe key exchange — modern Curve25519 cryptography combined with post-quantum CRYSTALS-Kyber to protect your conversations against current and future attacks. • No phone number, no email — sign up with just a username. Your identity is a key pair generated locally on your device. • Move between devices with a single credential — no SMS codes, no recovery emails, no third parties. • Voice and video calls, encrypted end-to-end, with native CallKit integration on iPhone. • Per-conversation safety codes you can verify in person. • Forward secrecy via the Double Ratchet protocol — past messages stay safe even if a future key is compromised. CONVERSATIONS YOU CONTROL • Your contact list lives only on your device. • Add contacts by username, by scanning a QR code, or by pasting an invite link. • Block and unblock anyone without notifying them. • Mute conversations, archive threads, star messages. • Send photos, videos, and files — no plaintext ever leaves your device. • Edit and forward messages, reply to specific messages, react with emoji. • Disappearing-message timers per chat. PRIVACY-FIRST IDENTITY • Your account is a cryptographic credential you generate locally and save yourself. • Tunnel does not store your credential — the server only sees a one-way hash that cannot be reversed. • Multi-device support — import your credential on a new device, and each device gets its own per-device encryption keys. ## Key features - End-to-end encryption for messages, photos, files, and calls - Quantum-safe key exchange - Username-based signup, no phone number or email needed - Encrypted voice and video calls - Per-conversation safety codes - Disappearing message timers ## Recent user reviews (1 of 1) All indexed reviews: https://appshunter.io/ios/app/tunnel-messenger/id6762237555/reviews.md ### 5/5 — Tunnel messenger *2026-04-22* Useful app ## Frequently asked questions about Tunnel Messenger ### What makes Tunnel Messenger different from other messaging apps? Tunnel Messenger offers end-to-end encryption on all content, including photos and files, and uses quantum-safe key exchange for future-proofing. It also allows signup with just a username, eliminating the need for a phone number or email. ### Is Tunnel Messenger secure against future threats? Yes, Tunnel Messenger utilizes modern Curve25519 cryptography combined with post-quantum CRYSTALS-Kyber for its key exchange. This ensures your conversations are protected against both current and potential future quantum computing attacks. ### How does Tunnel Messenger handle user identity and accounts? Your account in Tunnel Messenger is a cryptographic credential generated locally on your device. The server only stores a one-way hash of this credential, meaning Tunnel does not store your actual private key. ### Can I use Tunnel Messenger on multiple devices? Yes, Tunnel Messenger supports multi-device usage. You can import your credential onto a new device, and each device will receive its own per-device encryption keys for secure communication. ### Does Tunnel Messenger offer encrypted voice and video calls? Absolutely. Tunnel Messenger provides end-to-end encrypted voice and video calls. On iPhone, it also features native CallKit integration for a seamless calling experience. ### How can I verify the identity of my contacts on Tunnel Messenger? Tunnel Messenger allows you to verify contacts using per-conversation safety codes, which you can check in person. You can also add contacts by username, scanning a QR code, or pasting an invite link. ### Does Tunnel Messenger have ads? No, Tunnel Messenger does not contain advertisements. It is a completely free and ad-free application focused on user privacy. ### How often is Tunnel Messenger updated? Tunnel Messenger was last updated on May 15, 2026, with version 2.4. This indicates a relatively recent update, suggesting ongoing development and maintenance. ## Version history (last 3 releases) ### 2.4 — 2026-05-15 New in 2.4: • Encrypted Vault — new tab replaces Status. Store notes, passwords, and files end-to-end encrypted on your device. Per-conversation Vault with audit trail. • Tunnel Pass — quantum-secure badge with cryptographic identity proofs in your Vault. • Emergency Mode lock screen — biometric/Face ID and PIN unlock, with optional duress decoy contacts. • Cryptographic delivery proofs — Ed25519-signed receipts for delivery and read events. • Security Dashboard — at-a-glance quantum/classical encryption badges per conversation. • Improved call reliability when the device is locked. • Self-delivery encryption — messages sent to your own devices now use Sesame ratchets. • Open registration on all platforms — sign up without an invite code. • Multiple stability and cryptographic interop fixes (hybrid X3DH per-ratchet path). ### 2.0 — 2026-04-21 New in 2.0: • Security Dashboard — see your encryption posture at a glance with a real-time security score, per-conversation quantum-safe indicators, and encryption distribution overview. • Encrypted Vault — store notes and passwords securely per conversation. Only you and your contact can access them. • Cryptographic Delivery Proofs — every message delivery and read receipt is now Ed25519-signed. Tap any sent message to view verifiable proof with copy-as-JSON for legal records. • Emergency Mode — set a duress PIN that opens the app with only selected safe contacts visible. No indicator that decoy mode is active. Designed for journalists, activists, and anyone in sensitive situations. • Per-conversation encryption badges — see at a glance which conversations use quantum-safe (ML-KEM-768) vs classical encryption. • Bug fixes and performance improvements. ### 1.0 — 2026-04-18 No release notes. --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-26.*