Five Pillars.
Zero Compromises.
Most apps call themselves "secure." Sync builds a security system that works even when you're forced to open it.
Security Built for the Real World.
Most messaging apps were built for the average person. Sync was built for people who hold real value on their devices.
If you hold digital assets, your phone is a target. Standard biometric locks and basic encryption aren't enough when someone can physically force you to unlock your device, when your phone is stolen while unlocked, or when a malicious actor has remote access.
Sync addresses every one of these scenarios — not just encryption in transit.
Start Protecting Yourself — Free
The Five Pillars
Each feature solves a specific real-world threat. Together, they form a system no other messaging app has.
GhostWire
Someone picks up your phone and scrolls through your contacts or chats — even without unlocking it.
GhostWire activates a stealth layer over your entire Sync identity. When active, your contact list vanishes from any view. Chats are accessible only via a secret PIN. All communication happens via RAM-only encrypted channels — nothing is written to disk, nothing persists.
It's not just hiding data. It's making it so there's nothing to find.
Stealth Mode · RAM-Only · Zero Persistence
Duress PIN
The problem it solves: Someone forces you to open your phone and show your messages or wallet balance.
Set a secondary secret PIN alongside your normal one. If you're ever under duress — physically coerced, threatened, or observed, just enter the Duress PIN and Sync immediately presents a clean, decoy version of the app: empty chats, zero wallet balance, no sensitive contacts.
Your real account, your real funds, your real conversations: completely invisible. The person watching has no idea.
Decoy Mode · Real Data Hidden · Panic Protection
Kill Switch
The problem it solves: Your phone is stolen or seized and you can't get it back.
Designate a trusted contact inside Sync. If you lose control of your device, that contact can activate the Kill Switch on your behalf by triggering an immediate remote factory reset of your Sync account. Your messages, wallet access, contacts, and identity are wiped clean.
Activated the next time the device connects to the internet, even if the app is closed. No exceptions.
Remote Wipe · Trusted Contact · Offline Queued
Obsidian Core
The problem it solves: Losing access to your device means losing all your chat history permanently.
The Blind Vault creates a zero-knowledge encrypted backup of your entire chat history. "Zero-knowledge" means the backup is encrypted before it ever leaves your device — Sync's servers store encrypted data they literally cannot read. Only you hold the decryption key.
Back up your chats, restore them to a new device, and rest easy — knowing that even if someone gained access to our servers, they would see nothing meaningful.
Zero-Knowledge · Encrypted Backup · Restorable
Aegis Shield
Coming SoonThe problem it solves: Quantum computers will eventually break today's public-key cryptography — putting everything encrypted today at risk of decryption in the future.
Aegis Shield (Coming Soon) is Sync's post-quantum cryptography readiness layer. It implements quantum-resistant key exchange and signature algorithms designed to remain secure against both classical and quantum adversaries — so your encrypted data stays protected as computing power advances.
Harvest-now, decrypt-later attacks are real. Aegis Shield (Coming Soon) ensures the ciphertext collected today cannot be broken by tomorrow's hardware.
Post-Quantum · Quantum-Resistant · Future-Proof
How Sync Compares
There's a reason security-conscious users are switching. Here's the honest comparison.
| Feature | Sync | Telegram | Signal | |
|---|---|---|---|---|
| End-to-End Encrypted by Default | ✓ | Groups only* | ✓ | ✓ |
| Zero-Knowledge Architecture | ✓ | ✗ | ✓ | ✗ |
| GhostWire (RAM-only ephemeral) | ✓ | ✗ | ✗ | ✗ |
| Duress PIN (decoy mode) | ✓ | ✗ | ✗ | ✗ |
| Kill Switch (remote wipe) | ✓ | ✗ | ✗ | ✗ |
| Obsidian Core (encrypted backup) | ✓ | ✗ | ✗ | Unencrypted* |
| Post-Quantum Crypto (Aegis Shield - Coming Soon) | Coming soon | ✗ | ✗ | ✗ |
| Built-in Crypto Wallet | ✓ | TON only | ✗ | ✗ |
| No Ads. No Data Mining. | ✓ | ✗ | ✓ | ✗ |
* Telegram group chats are NOT end-to-end encrypted by default — only "Secret Chats" are. WhatsApp backups to Google Drive/iCloud are not end-to-end encrypted.
Built on Zero-Knowledge
Here's what "we can't read your messages" actually means in practice.
Keys on Your Device
Your encryption keys are generated and stored on your device only. Sync never holds, transmits, or stores your private keys. We could not decrypt your messages even if we wanted to.
Encrypted in Transit and at Rest
Every message, file, call, and piece of metadata is encrypted before it leaves your device. Our servers route sealed packets — we never see the contents.
No Metadata Collection
We don't log who you message, when you message, how often, or from where. There is no user profile to hand to any third party.
On-Device AI Processing
Sync AI features including the conversation summarizer run entirely on your device. Your conversations never leave your phone to be processed by an AI server.
Security shouldn't be a
premium feature.
All five security pillars are available to every Sync user, free. Because your safety isn't a selling point, it's a right.