End-to-end encryption by default
Messages sealed on-device before they leave — not an optional mode.
BlinkYes
WhatsAppYes
SignalYes
TelegramPartial
Blink vs other messengers.
Most apps encrypt the message body and stop there. Blink is built for teams who need ciphertext-only servers, device control, and defenses for the moment a phone is seized — not just a padlock icon in the chat header.
The difference
Encryption is table stakes. Control is the product.
WhatsApp, Signal, and Telegram each solve part of the privacy problem. Blink is for the rest — keys that never leave your devices, Spaces with real roles, and tools designed for coercion, seizure, and screenshots.
Ciphertext-only servers
Anti-keylogger keyboard
Remote wipe & screen guard
Duress wipe & Secure Locker
Side by side
Feature comparison
An honest matrix of what ships today. “Partial” means available with limits, optional modes, or weaker guarantees. “Coming soon” is on Blink's roadmap and badged as such.
Yes Partial No Coming soon
Ciphertext-only servers
Servers store scrambled ciphertext, never keys that can read your content.
- BlinkYes
- WhatsAppPartial
- SignalYes
- TelegramNo
No phone number or email required
Sign up with nothing to trace — Blink opens with a 24-word recovery phrase instead.
- BlinkYes
- WhatsAppNo
- SignalNo
- TelegramNo
Weekly key rotation / forward secrecy
Compromised keys can't reopen an unbounded past.
- BlinkYes
- WhatsAppYes
- SignalYes
- TelegramPartial
App PIN lock on every open
A 6-digit PIN each time the app opens, and the phone apps lock again as soon as you switch away.
- BlinkYes
- WhatsAppYes
- SignalYes
- TelegramYes
Anti-keylogger keyboard
Your own keyboard takes over so the system keyboard never watches keystrokes.
- BlinkYes
- WhatsAppNo
- SignalNo
- TelegramNo
Screenshot & screen-recording block
Blocked on Android, blank on iPhone, and chats hidden in the app switcher on both.
- BlinkYes
- WhatsAppNo
- SignalPartial
- TelegramNo
Push-triggered remote wipe
Remove a lost phone in Manage Devices: it's signed out, its access is revoked, and its Blink data is wiped.
- BlinkYes
- WhatsAppPartial
- SignalPartial
- TelegramPartial
Reverse-PIN duress wipe
Enter your PIN backwards: Blink wipes that phone, locks your account, and signs out your other devices. No alert.
- BlinkYes
- WhatsAppNo
- SignalNo
- TelegramNo
Auto-wipe after failed PIN attempts
After 5 wrong PINs, Blink wipes itself from that device.
- BlinkYes
- WhatsAppNo
- SignalNo
- TelegramNo
One-swipe account lock (all devices)
Slide to lock: the account locks, every device signs out, and the phone in hand is wiped. Unlock from the web.
- BlinkYes
- WhatsAppNo
- SignalNo
- TelegramPartial
Secure Locker (encrypted files)
Locker files (filenames included), Vault notes, and your Passbook encrypted on your device before they're saved.
- BlinkYes
- WhatsAppNo
- SignalNo
- TelegramPartial
Multi-tenant Spaces & RBAC
Isolated workspaces with real roles: admin, owner, member.
- BlinkYes
- WhatsAppNo
- SignalNo
- TelegramPartial
Space lock & guarding
Extra seal on the highest-risk conversations.
- BlinkYes
- WhatsAppNo
- SignalNo
- TelegramNo
Camouflage / disguise apps
Hide the messenger behind an ordinary home-screen icon.
- BlinkYes
- WhatsAppNo
- SignalNo
- TelegramNo
Disappearing messages
Messages that vanish after 5 minutes, 10 minutes, 24 hours, 7 days, or 90 days.
- BlinkYes
- WhatsAppYes
- SignalYes
- TelegramYes
Immortal transaction records
Tag a message as a transaction: neither side can delete it, and the other can accept or decline.
- BlinkYes
- WhatsAppNo
- SignalNo
- TelegramNo
Cross-platform (phone, desktop, web)
Same guarantees wherever you sign in — Android, iPhone, Windows, Mac, and the web dashboard.
- BlinkYes
- WhatsAppYes
- SignalYes
- TelegramYes
Competitor capabilities summarized from public product behavior. Always verify against each vendor's current docs for your threat model.
Comparing Threema, Session, Viber, or WeChat instead? Open Compare Global →
Where Blink pulls ahead
Four pillars other messengers leave open
Servers that never hold the keys
Blink seals every message and file on your device before it's sent. Keys are agreed and derived on the device. Our servers store only ciphertext — there is nothing readable on our side to leak, steal, or hand over.
How encryption works →
A keyboard nothing can watch
On phones, Blink types with its own built-in keyboard by default, so keyboard apps and OS-level capture don't get a free look at your passphrase, PIN, or message. Prefer your phone's keyboard? Switch in Settings → Security.
See the keyboard →
Built for the worst-case moment
Reverse-PIN duress wipe, space lock, remote wipe, and screen protection are designed for journalists, legal teams, and anyone who cannot afford a seized device to become a breach.
Explore duress defense →
Spaces with real roles
Multi-tenant Spaces isolate teams with admin, owner, and member roles. Guarding and space lock keep the highest-risk rooms sealed — even when the app is open.
Learn about Spaces →Who chooses Blink
Built for people who cannot afford a leak
Newsrooms & sources
Protect source conversations with ciphertext-only storage, disappearing messages, and a duress wipe if a device is seized.
Legal & privileged work
Keep privileged files in the Secure Locker — encrypted on your device, filenames included, before they're saved — and seal high-risk matters behind space lock.
Field & executive teams
Remote wipe and device management mean a lost phone doesn't become a leak. Screen protection blocks opportunistic captures.
Founders under NDA
Transaction messages create immortal, encrypted records for the exchanges that must remain verifiable.
At a glance
Know what you're choosing
Use this page to brief a security team or board. Blink wins on device control, duress defense, Secure Locker, and Spaces — not on being the largest chat network.
- Blink
Private by design — ciphertext-only servers, device control, and defenses for high-stakes moments.
- WhatsApp
Massive reach and familiar chat — encryption for messages, but metadata and ecosystem trade-offs remain.
- Signal
Strong consumer privacy defaults and open protocols — lighter on enterprise Spaces and device controls.
- Telegram
Feature-rich cloud chat — secret chats are optional; cloud chats are not end-to-end encrypted by default.
Ready to see the difference live?
We'll walk your team through encryption, remote wipe, duress wipe, and Spaces — using the real product, not slides.
Frequently asked questions
Private by design. Built for when it matters.
Stop compromising between familiar chat and real device control. Put Blink next to the messengers you already know — then decide.