Sync: Secure Chat & Private AI for iOS - Free Download at AppPure

About Sync: Secure Chat & Private AI

Experience the future of privacy with Sync.

Sync has been completely reimagined to give you ultimate control over your digital life. Wrapped in a stunning new glassmorphism design, Sync is more than just a chat app—it’s your secure personal sanctuary.

Why Sync?
- Ghostwire Protocol: Engage in truly private conversations. Our new Ghostwire protocol ensures your chats are ephemeral and encrypted, leaving absolutely no trace behind.
- Invisible Vault: Keep your most sensitive data hidden. The Invisible Vault allows you to store chats and files in a secure space that is completely invisible to prying eyes.
- Stealth Mode: Need ultimate discretion? Transform Sync into a fully functional calculator. Only you know the secret PIN to unlock your real world.
- Performance: We’ve rebuilt our core engine using Rust, delivering lightning-fast speed and rock-solid reliability without compromising on security.

Features:
- Seamless Glassmorphism UI: A beautiful, modern interface that feels as good as it looks.
- End-to-End Encryption: Your privacy is our priority. Only you and your intended recipient can read your messages.
- Cross-Device Sync: seamlessly switch between your phone, tablet, and computer.

Download Sync today and reclaim your privacy.

What's New in the Latest Version 2.2.2

Last updated on May 7, 2026

Old Versions

New:
- Instant, Offline-First Launch: Sync opens straight to your chats with no network wait — reach your messages immediately, even in airplane mode. Version checks run quietly in the background after you're already in.
- Sync AI (formerly Oracle AI): Sync AI is now a regular conversation in your chat list. Switch personas — Professional, Family, Friend, and more — to shape the AI's tone for the whole chat. On-device action chips detect tasks as you chat and open pre-filled Calendar and Reminders sheets with one tap.
- Live Status Banner: A new full-width banner on every screen shows your real-time connection state — Offline, Connecting, Syncing, or Back Online.
- E2EE Full Feature Parity: Encrypted direct messages now support replies, media (images, video, audio, files), @mentions, and forwarding.

Security:
- Fixed a regression where direct messages opened from a push notification could briefly send in plaintext. Encrypted mode is now resolved from the local database before the first frame — the send path fails closed rather than downgrading silently.
- "Delete for everyone" now clears reactions and read receipts in the same transaction. No more ghost reactions on deleted messages.
- Deleted media is now also removed from storage when a message is deleted for everyone.

Stability & Fixes:
- Fixed spurious logouts when the app resumes from suspension. Refresh requests are now coalesced so only one round-trip fires per wake cycle.
- Deleted messages now vanish in real time for all participants instead of waiting until the chat is reopened.
- Improved connectivity detection on iOS with VPNs, hotspots, and Simulator — gRPC traffic is now the ground truth for connection state.
- Pull-to-refresh exits cleanly when offline instead of spinning on a stalled connection.
- Sync AI streaming is smoother — UI updates are batched every 8 tokens instead of repainting on every token.

Version History

2.2.2

May 7, 2026

New:
- Instant, Offline-First Launch: Sync opens straight to your chats with no network wait — reach your messages immediately, even in airplane mode. Version checks run quietly in the background after you're already in.
- Sync AI (formerly Oracle AI): Sync AI is now a regular conversation in your chat list. Switch personas — Professional, Family, Friend, and more — to shape the AI's tone for the whole chat. On-device action chips detect tasks as you chat and open pre-filled Calendar and Reminders sheets with one tap.
- Live Status Banner: A new full-width banner on every screen shows your real-time connection state — Offline, Connecting, Syncing, or Back Online.
- E2EE Full Feature Parity: Encrypted direct messages now support replies, media (images, video, audio, files), @mentions, and forwarding.

Security:
- Fixed a regression where direct messages opened from a push notification could briefly send in plaintext. Encrypted mode is now resolved from the local database before the first frame — the send path fails closed rather than downgrading silently.
- "Delete for everyone" now clears reactions and read receipts in the same transaction. No more ghost reactions on deleted messages.
- Deleted media is now also removed from storage when a message is deleted for everyone.

Stability & Fixes:
- Fixed spurious logouts when the app resumes from suspension. Refresh requests are now coalesced so only one round-trip fires per wake cycle.
- Deleted messages now vanish in real time for all participants instead of waiting until the chat is reopened.
- Improved connectivity detection on iOS with VPNs, hotspots, and Simulator — gRPC traffic is now the ground truth for connection state.
- Pull-to-refresh exits cleanly when offline instead of spinning on a stalled connection.
- Sync AI streaming is smoother — UI updates are batched every 8 tokens instead of repainting on every token.

Feedback Report