Sync: Secure Chat & Private AI
Secure chat for everyone
Free · Designed for iPad. Not verified for macOS.
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.
more WALLET
• Scan a recipient's QR code to send, from the scan icon on the wallet card or from the recipient field on the Send screen.
• Your Receive QR now says which network it belongs to, so a scan can tell Ethereum from BNB Chain instead of guessing.
• Scanning an address that could belong to several networks now asks which one you meant, and scanning an address from a different network asks before switching the send over (clearing the amount, since the unit changed).
• The send confirmation now shows how much of the coin you hold, next to the amount you are sending.
• Network rows on the wallet card were rebuilt: the full network name and address sit on one line with the balance underneath.
• Chain and coin logos now sit inside their circle instead of spilling over the edge.
• Transaction history keeps the network filter when you scroll past the first page.
• Creating or importing a wallet now asks you to acknowledge that Sync is self custodial and cannot recover your funds.
• A recovery phrase that the server verifies can now replace a backup this device can no longer read, so a rebuilt vault no longer leaves the wallet stranded.
• Removed the Wallet Vault information card from Manage Wallets.
PRIVACY & SECURITY
• The Hidden Chats PIN now belongs to your account, not to the phone. A new account signing in on a device that held another account no longer inherits its PIN, and signing out clears it.
• Signing in on a new device (or after reinstalling) restores your Hidden Chats PIN from your encrypted backup.
• Setting a Hidden Chats PIN can no longer silently replace one the account already has.
• Forgot your Hidden Chats PIN? You can now reset it with your vault PIN.
• Setting a PIN before the vault is ready now says so, instead of blaming your connection.
2.4.1 Aug 21
WALLET
• Your default wallet is now secured automatically the moment it is created, so there is no separate backup step to remember. The manual backup screen is gone.
• Sign in on another device and you get the same wallet instead of a new empty one.
• The wallet key is tied to your account rather than to the app, so a shared device can never open the wrong wallet.
• Token and Collectibles tabs stay loading while your wallet is scanned for the first time, instead of looking empty as if you owned nothing.
• Transaction history refreshes when you return to the app, reconnect, or pull down.
• Tapping a transaction notification opens that transaction, and Back returns you to the history list.
• Amounts, balances, and prices are formatted the same way across every wallet screen.
• The wallet is now reached from the button on the home screen, and the summary panel at the top is gone.
• Long wallet names, chain addresses, and transaction detail badges no longer overflow or break mid word.
• Typing a comma into an amount is read as grouping, not as a decimal point.
• Unlocking from the wallet no longer loses the screen you came from.
CHAT
• Jump to the message a reply answers. Tap the quoted text above any reply and Sync takes you straight to the original message and flashes it. Works even for older messages that are not loaded on your device yet.
• See the date while you scroll. Scrolling a long chat now shows a floating date, so you always know where you are in the conversation.
• Reply previews show the original message even when it is older than what is loaded on your device.
• Photos fill the bubble properly, with no side gap on portrait shots.
• Video thumbnails load reliably and bubbles are sized correctly.
• Photos and videos you send no longer flicker and reload in your own bubble.
• A message that cannot be decrypted no longer claims it came from another device.
• Your two ticks survive a dropped connection and arrive once you reconnect.
PRIVACY & SECURITY
• Vault contents unlock only after your PIN is actually verified.
• A device that does not hold your private key can no longer destroy it.
• On Android, Sync data is excluded from Auto Backup, so nothing is copied off your phone.
• The vault dashboard is reachable again from Settings and reports its state clearly.
2.4.0 Aug 12
We’ve overhauled our real-time messaging and added built-in photo editing to make sharing seamless! Here’s what’s inside:
Photo Editor & Media Upgrades
- In-App Photo Editor: Crop, rotate, draw, add text, apply filters, or blur details before sending (your original photo stays untouched).
- Easy Forwarding: Forward photos, videos, and files directly to any chat or group.
- Download Fixes: Resolved issues where certain files occasionally failed to download.
Faster, Smarter Messaging
- Next-Gen Streaming Engine: Faster message delivery and instant reconnection.
- Reliable Offline Sync: Messages sent offline auto-resend upon reconnecting—with zero duplicates.
- Background Updates: Real-time notifications and unread badge counts now update smoothly in the background.
- Cross-Device Sync: Clear history and Hidden Chats (including PINs and contacts) now sync instantly across all your connected devices.
Onboarding & Refined UI
- Quick-Start Guide: A sleek, skippable tour on your first launch to help you connect via username, phone, or QR code.
- Polished Layouts: Smoother profile editing screens, cleaner long-name truncating in notifications, and refined chat spacing.
2.3.2 Jul 28
Group Controls & Activity
- Dynamic UI: Message boxes now instantly hide or show if permissions change in admin-only groups.
- Role Enforcement: Action menus (promote, remove, etc.) now precisely reflect your actual permissions. Admin-only rights for adding members and changing photos are strictly enforced.
- Smooth Departures: Remove members with a specified reason. Left or removed accounts now clear smoothly without breaking the chat view.
- Activity Notes: Added clean timeline notes when members join, leave, or get removed. Leaving will display as "You left the group" rather than your name. These alerts won't affect your unread badge count.
Privacy & Security
- Enhanced Hidden Chats: Locked chats stay truly hidden. Contacts inside hidden chats are excluded from your call history, share pickers, and contact searches until unlocked. Hidden states automatically clear upon logout.
- Discoverability: You will only appear in "Find me by phone number" searches if a valid phone number is attached to your account.
- Settings Fix: Corrected a bug on the privacy screen where backing out would revert to a stale choice instead of saving your latest preference.
- Account Deletion: Added backend protection to prevent the abuse of account deletion requests.
2.3.1 Jul 14
Faster, more reliable chats, plus group invites and translate-as-you-chat.
FASTER CHAT LIST
Your chats now load from the device first, so the list appears as soon as you open the app instead of waiting on the network. Sync feels noticeably quicker and opens reliably even on a weak connection.
NEW
• Translate as you chat: tap any message to read it in your language — and translate your own draft before you send, so you can write to anyone in their language. (We haven't seen this anywhere else.)
• Group invite links: share a link or QR code to bring people in, with a preview before they join. No more adding members one by one.
BONUS
• Cipher Box: a new word game you can play right inside your group chats. Crack the code together and see who gets it first.
FASTER, MORE RELIABLE CHATS
• Opening a chat is quicker and steadier: messages no longer go missing, and older history fills in as you open or scroll, even on a weak connection.
• Empty chats open right away instead of showing a loading spinner.
• Group member names and photos now appear without placeholders.
• Contacts load reliably when you open the app.
FIXES & IMPROVEMENTS
• Calling back from a call log now starts the correct type, audio or video.
• Emojis render larger and clearer.
• All chat content loads after you unlock with your PIN.
• "Get Smart Reply Suggestions" no longer crashes the app.
• QR codes are easier to scan and now carry the Sync logo in the center.
• Chats with no messages show the right time and sort correctly.
• Messages received while offline no longer appear as empty bubbles.
2.3.0 Jun 29
Calls, messages & notifications
- More reliable realtime messages and push notifications when coming back from the background.
- Smoother calls: a single ringtone per call, and picture-in-picture now closes the moment a call ends.
- Fixed a case where the same message could arrive twice (once live, once as a push notification).
Chat
- New jump-to-latest button to instantly scroll back to the newest message.
- @mentions in group chats: a member's name is highlighted and tappable — tap to open their profile.
- Deleted accounts now show as "Deleted Account" while keeping the chat and history; their messages are read-only.
- Names and avatars now display correctly for everyone in group chats.
- In-app notification when someone sends you a friend request.
Trusted Custodian Improvements
A person you trust can now securely wipe your account data from your device when needed. You'll now get an in-app alert the moment you're set as someone's custodian or a custodian action happens — tap to jump straight in.
Under the hood
- A leaner, faster chat list rebuilt for smoother scrolling.
- Rock-solid streaming connection that reconnects the instant your network comes back.
- Snappier logout that drops you at the login screen right away.
- Plus dozens of smaller reliability and performance refinements throughout the app.
2.2.4 Jun 13
- Call Stability & Reliability: Calls connect and end more predictably with accurate real-time status updates and correct caller names/photos. We’ve also enhanced incoming-call visibility, call-log metadata, and handling for edge-case duplicate calls.
- Streamlined Notifications: Missed-call notifications are more dependable. Push-notification delivery has been optimized so in-app alerts display seamlessly while redundant background banners and duplicate alerts are eliminated.
- Smoother Chat & Sync: Experience faster reconnection and message synchronization when resuming the app. Chat navigation, pagination auto-scroll behaviors, and direct/group messaging availability have all been improved.
- Enhanced UI & Navigation: Tapping a friend-request notification now jumps you straight to your updated Contacts tab. We’ve also resolved a persistent "No connection" banner issue on app resume and added a logout confirmation step.
- Under-the-Hood Fixes: Session token management is now more robust, and login or registration errors are clearer and localized for a smoother onboarding experience.
2.2.3 May 30
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.
2.2.2 May 7
New:
- Redesigned Contacts: A single, unified screen for finding friends, managing requests, and syncing your phonebook.
- Smart Sync: Once enabled, your contacts stay updated automatically every time you open the app.
- Privacy Updates: Improved handling of deleted accounts in group chats for better privacy and chat clarity.
- Enhanced QR Sharing: New look for QR codes with support for deep links and light/dark modes.
- Better Typing Experience: The tab bar and buttons now auto-hide when the keyboard is open to maximize your view.
Stability Fixes:
- Resolved "Session Expired" errors on startup.
- Fixed message decryption issues on secondary devices.
- Fixed a crash caused by certain emojis in contact names.
- Faster logout and smoother screen transitions.
2.2.1 Apr 24
Securely Sync Across Devices
Your encryption keys now move with you! We’ve upgraded the Vault so you can access your secure chats seamlessly across all your phones and tablets without missing a beat.
Multiple Accounts, One App
You can now sign into multiple accounts on the same device. Each account stays completely private with its own unique encryption keys.
Smoother Messaging
- Faster Uploads: Fixed an issue where photos and videos could get stuck during upload.
- Better Navigation: Tapping notification banners now takes you exactly where you need to be.
- Cleaner Look: We’ve polished the chat bubbles, improved how long names appear, and fixed those annoying iPad rotation bugs.
Privacy First
We’ve improved our "Secure Wipe" and account deletion features to ensure your data is handled exactly how you expect it to be—privately and permanently.
2.2.0 Apr 15
New
- Share your contact via QR code or profile link
- Add friends via a link — tap to send a request or open chat directly
- Decline friend requests from Contacts → Pending tab
- Tap a member's avatar in group chat to view their profile
- Edit sent messages (text and media)
- In-app notification banner for new messages
Improved
- Sharper video thumbnails in chat
- Smoother scrolling with images and videos
- Fewer accidental swipe-to-reply triggers
- Deep links now saved while app is locked, processed after unlock
2.1.2 Apr 8
- Connectivity Restored: We’ve implemented a critical infrastructure update to ensure the app remains stable and connected at all times.
- Revamped Voice Messages: Enjoy a smoother recording experience. Hold to record, release to send, and swipe left to cancel. Plus, check out the new waveform audio player.
- Read Receipts & Presence: Now you can see who has read your messages in group chats and view "Last Seen" or "Online" status for your contacts.
- Oracle (AI) Enhancements: Your AI assistant now supports full Markdown formatting for clearer, more structured responses.
- Deep Linking: Sync links now take you directly to the right chat or screen instantly.
- Performance Tweak: We’ve temporarily moved our "Pulse" social feature back into development. We are committed to a high-quality, secure social experience and will re-release it once it meets our refined stability and safety standards.
- Bug Fixes: Resolved an issue with camera permission prompts and added a recovery hatch for account PINs.
2.1.1 Apr 1
- Introducing Pulse: our new social experience is now live for all users.
- Create and browse posts and stories, and manage your own content more easily.
- Major Vault reliability upgrades for setup, unlock, and restore.
- Improved multi-device sync with better conflict recovery and sync status visibility.
- Performance and stability improvements across chat, Pulse, and Oracle experiences.
2.1.0 Mar 19
• Introducing Duress PIN for ultimate emergency protection. You can now set a custom "Duress PIN" alongside your regular passcode. Entering this PIN on the lock screen will immediately triggering a cryptographic shred of all your real local data to keep it out of the hands of intruders.
• Continued infrastructure scaling and security polish for our core digital fortress.
• New Logo aligning to the new AI and security fortress
2.0.4 Mar 5
NEW: Oracle AI — Your Private Chat Assistant Transform your conversations with on-device intelligence that works completely offline. Your data never leaves your device.
• Smart Replies: Get instant, context-aware reply suggestions. Perfect for when you are busy.
• Conversation Summaries: Catch up fast. Tap the Oracle button to summarize long chat histories or specific unread messages.
• Zero-Knowledge: All AI processing happens locally. Nothing is sent to the cloud.
NEW: Trusted Custodians — Emergency Data Protection Designate trusted contacts who can help protect your privacy in an emergency.
• Dead Man’s Switch: Allow a trusted contact to trigger a "Nuclear Timer" or immediate data wipe if you cannot access your device.
• Inactivity Auto-Delete: Set your account to self-destruct after 1 to 12 months of inactivity.
• Full Control: View audit logs of custodian activity and cancel wipe timers during the grace period.
REBUILT: GhostWire Protocol We have rebuilt our self-destructing message system from the ground up for maximum reliability.
• True Deletion: Messages now properly disappear from both sender and receiver devices immediately upon reading or replying.
• Smooth Animations: Messages now dissolve gracefully with a fade effect.
• Offline Sync: Ghost messages are delivered instantly when you reconnect, even if you were offline.
IMPROVEMENTS & FIXES
• Blind Vault: Fixed an issue where the setup screen was skipped or permissions were denied during backup. Recovery phrase words are now fully visible in Dark Mode.
• Stealth Mode: App unlock remains PIN-driven from the calculator screen; Face ID no longer triggers prematurely on app resume.
• Account Security: "Delete Account" now performs an immediate, permanent deletion after password confirmation.
• Typing Polish: Chat input now auto-capitalizes sentences correctly.
• Bug Squashing: Fixed issues with Ghost message re-delivery loops, read notifications, and contact list loading.
2.0.3 Feb 19
What's New in Version 2.0.2
Enhanced Security & Privacy
• End-to-end encryption now enabled by default for all chats
• Redesigned security settings with PIN-first protection
• Biometric and app lock now require PIN for enhanced security
Improved Calling Experience
• Smoother call initiation with new calling screen
• Start audio or video calls directly from chat
• Call history automatically refreshes after calls
• Better loading states and pull-to-refresh
Smart Login Experience
• Returning users can use Face ID/Touch ID without re-entering password
• Email auto-fills for faster sign-in
• PIN entry works even when logged out
• Security preferences preserved across sessions
Bug Fixes
• Improved message delivery reliability
• Better error handling throughout the app
Your privacy is our priority. All direct chats are now automatically encrypted end-to-end with seamless fallback if needed.
2.0.2 Feb 3
- UI/UX improvements on chat screen
- Session handling fortifications
- Fixed message reactions
- Added PIN and FaceID login
- Fixed AppLock logic
- Added Push Notifications for Audio and Video calls
2.0.1 Jan 29
Welcome to the all-new Sync 2.0! We’ve rebuilt the app from the ground up to bring you the ultimate privacy experience.
- New Glassmorphism Design: A stunning, modern look that makes using Sync a delight.
- Ghostwire Protocol: Introducing our advanced private chat protocol for conversations that leave no trace.
- Invisible Vault: Hide your most private chats and files in a secure, invisible vault.
- Stealth Mode: Disguise the entire app as a fully functional calculator for maximum privacy.
- More Robust Privacy Settings: Granular control over your data and security.
- Rust Backend: We’ve moved our backend to Rust for unparalleled speed, security, and stability.
2.0.0 Jan 26
- Meet Your Match: We’ve added usernames so you can easily recognize your friends in the chat!
- Oops, Fix It: Made a typo? You can now edit your messages in private, group, and encrypted chats within 48 hours.
- Group Helpers: Group admins can now add moderators to help keep things running smoothly.
1.0.12 08/24/2025
Sync Chat App - Version 1.0.11 - Improvements & Bug Fixes
We’re excited to release version 1.0.11 of Sync Chat! Here’s what’s new:
- Audio Call Fix: We’ve addressed a recent issue that caused audio to drop out during voice and video calls on iOS devices. Enjoy seamless conversations!
- Group Seen Updates: We’ve refined the group seen message flow for a clearer and more efficient experience.
1.0.11 07/31/2025
Sync - Version 1.0.10 – Improvements to Stability, Privacy, and Media Sharing
We're excited to release version 1.0.10 of Sync, packed with improvements based on your feedback!
What’s New:
Notification Stability: We’ve identified and resolved a crash that some users experienced when clicking notifications. This update ensures that you'll receive and interact with all notifications smoothly.
Privacy Enhancements: We’ve implemented a privacy safeguard! Email addresses are now automatically hidden from search results, giving you more control over your profile visibility.
Media Sending Resolution: We’ve addressed a bug that prevented some users from successfully sending some image types and other media files. This update ensures seamless media sharing within Sync.
1.0.10 07/15/2025
- Update flow flor deeplink when app background
- Update UI for QR scan
1.0.9 07/14/2025
Update icon , fixing some bugs
1.0.8 07/10/2025
WALLET
• Scan a recipient's QR code to send, from the scan icon on the wallet card or from the recipient field on the Send screen.
• Your Receive QR now says which network it belongs to, so a scan can tell Ethereum from BNB Chain instead of guessing.
• Scanning an address that could belong to several networks now asks which one you meant, and scanning an address from a different network asks before switching the send over (clearing the amount, since the unit changed).
• The send confirmation now shows how much of the coin you hold, next to the amount you are sending.
• Network rows on the wallet card were rebuilt: the full network name and address sit on one line with the balance underneath.
• Chain and coin logos now sit inside their circle instead of spilling over the edge.
• Transaction history keeps the network filter when you scroll past the first page.
• Creating or importing a wallet now asks you to acknowledge that Sync is self custodial and cannot recover your funds.
• A recovery phrase that the server verifies can now replace a backup this device can no longer read, so a rebuilt vault no longer leaves the wallet stranded.
• Removed the Wallet Vault information card from Manage Wallets.
PRIVACY & SECURITY
• The Hidden Chats PIN now belongs to your account, not to the phone. A new account signing in on a device that held another account no longer inherits its PIN, and signing out clears it.
• Signing in on a new device (or after reinstalling) restores your Hidden Chats PIN from your encrypted backup.
• Setting a Hidden Chats PIN can no longer silently replace one the account already has.
• Forgot your Hidden Chats PIN? You can now reset it with your vault PIN.
• Setting a PIN before the vault is ready now says so, instead of blaming your connection.
more Version 2.4.1 Aug 21
Data Not Linked to You The following data may be collected but it is not linked to your identity: