# ZIØN — Zero server, no cloud

> Zero server, no cloud (iPhone/iPad app by Daniele Taormina.)

- Source: https://appshunter.io/ios/app/zin/id6786438540 (this page in markdown: same URL + `.md`)
- Developer: [Daniele Taormina](https://appshunter.io/developer/6786438542)
- Category: Social Networking, Utilities
- Price: Free
- Age rating: 17+
- Requires: iOS 17.0 · 2 MB
- Languages: American English, French (France), German (Germany), Italian, Japanese, European Spanish
- Released: 2026-07-07
- Data updated: 2026-09-04
- User reviews in markdown: https://appshunter.io/ios/app/zin/id6786438540/reviews.md

## What is ZIØN?

ZIØN is a peer-to-peer, end-to-end encrypted messenger built on one principle: your conversations belong to you and your contact — no accounts, no cloud, no message database.

HOW YOUR MESSAGES TRAVEL
• On the same network, ZIØN connects your devices directly, device to device. Nothing leaves your local network.
• Across different networks, messages are carried by a minimal relay we operate that only forwards already-encrypted bytes. It is zero-knowledge by design: it cannot read your messages, your contacts, or any content — and neither can we.
• Optional WAN mode (OFF by default): when you enable it, ZIØN can also open a direct device-to-device connection across the internet via UDP hole punching. Only then does the app contact public IP-discovery services (ipify, ifconfig.me, icanhazip, checkip.amazonaws) to learn its own address for NAT traversal.

There are no ZIØN accounts and no cloud storage of your messages. The relay never holds anything it can decrypt.

STANDARD CRYPTO, ZERO CUSTOM
• Curve25519 + ECDH key exchange
• Forward Secrecy with per-session ephemeral keys
• Authenticated AES-256-GCM message encryption
• HMAC-SHA256 handshake authentication (anti-MITM)
• 30-digit Signal-style safety numbers

OPERATIONAL PRIVACY
• Encrypted local storage
• Excluded from iCloud backup
• Self-destructing messages with configurable timer
• Bidirectional message deletion
• One-tap Emergency Wipe
• Screenshot blocking, screen-recording detection
• Session keys wiped from RAM on idle
• Anonymous notifications: "New message" only, no sender or content

LOCALIZED IN 6 LANGUAGES
English, Italiano, Español, Français, Deutsch, 日本語

HONEST DISCLOSURE
ZIØN is experimental software and has not undergone formal independent cryptographic audit. For communications where compromise would cause severe harm, use audited solutions like Signal. ZIØN is designed for users who want a second private channel between trusted devices.

REQUIREMENTS
iPhone 13 or later. iOS 17 or later. Face ID or Touch ID recommended.


## Version history (last 3 releases)

### 1.0.2 — 2026-08-26

What's new in 1.0.2:
  - Improved privacy: public IP discovery is now optional and OFF by default. ZION makes no external calls unless you enable 
  it in Settings > Internet (WAN).
  - Minor fixes and improvements.

### 1.0.1 — 2026-07-10

Fixes and improvements:
   • Onboarding and "Spirit of ZIØN" now follow the selected language
   • Redrawn language flags, always crisp
   • Smoother Matrix rain, with a toggle to enable/disable it in Settings
   • Minor fixes

### 1.0 — 2026-07-07

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 2026-09-04.*