Private by Design. Trusted by Default.
Cipher is a next-generation messenger secured by blockchain technology. End-to-end encrypted, fully decentralized, and built to comply with the world's strictest data protection standards. Your messages never touch a server anyone can read.
Hey! Did you see the new wallet update?
Yes! Multi-chain support is amazing
Sending you 0.5 ETH now
0.5 ETH Received
Confirmed on-chain
This message expires in 5m
Everything You Need. Nothing You Don't.
Every feature in Cipher exists for one reason: to protect your fundamental right to private communication -- while meeting the highest regulatory standards worldwide.
Military-Grade Encryption
Every message, voice note, image, and file is protected with AES-256 encryption and Curve25519 key exchange. Keys are generated and stored exclusively on your device. Not even Cipher can read your conversations -- because we literally cannot.
No Central Point of Failure
Traditional messengers rely on centralized servers -- single points that can be breached, subpoenaed, or shut down. Cipher runs on a distributed blockchain network where no single entity controls your data. Your messages are relayed, never stored.
True Anonymity, by Default
Create your account with a cryptographic key pair in seconds. No phone number. No email address. No personal information of any kind. Your public key is your identity -- share it only with people you choose to trust.
Messages That Know When to Vanish
Set custom self-destruct timers from 5 seconds to 7 days. When time's up, messages are permanently erased from every device in the conversation. No server-side copies. No backups. No forensic traces. Gone means gone.
Chat & Transact in One Place
Send and receive cryptocurrency directly inside any conversation. Cipher's built-in multi-chain wallet supports ETH, BTC, USDT, and more -- with the same end-to-end encryption protecting every transaction detail.
Don't Trust. Verify.
Cipher's entire cryptographic protocol is open source and available for independent audit. Security researchers worldwide can inspect, test, and verify every line of our encryption implementation. Transparency is how we earn trust.
How Your Privacy Is Engineered
Cipher uses a multi-layered encryption architecture designed so that no readable data ever exists outside your device. Here's exactly how it works.
Zero-Knowledge Architecture
Every message is encrypted client-side before transmission. Our servers -- and the entire blockchain relay network -- only ever see ciphertext. Even under a court order, we have nothing readable to hand over.
Standards-Grade Cryptography
We use the same cryptographic primitives trusted by governments, banks, and military organizations: AES-256-GCM for symmetric encryption, X25519 for key exchange, Ed25519 for signatures, and HMAC-SHA256 for authentication.
Regulatory Compliance Built In
Cipher is architecturally compliant with GDPR, CCPA, PIPEDA, and the EU Digital Markets Act. Privacy by design isn't a marketing phrase for us -- it's how our system is literally engineered at the protocol level.
Forward Secrecy
Every session generates fresh ephemeral keys via the Double Ratchet algorithm. Even if a key is somehow compromised, past and future messages remain encrypted with entirely different keys.
From Zero to Encrypted in Under 60 Seconds
No registration forms. No verification emails. No waiting. Just pure, private communication from the moment you open the app.
Create Your Secure Identity
Download Cipher and your unique cryptographic key pair is generated instantly on your device. Your public key becomes your shareable address. Your private key never leaves your phone. No sign-up. No personal data. Just math.
Connect with Anyone, Verify Everyone
Share your public key, scan a QR code, or tap devices together with NFC. Every connection is cryptographically verified end-to-end, so you always know exactly who you're talking to -- no trust assumptions needed.
Message, Call, and Transact Freely
Send encrypted text, voice messages, files, and photos. Make crystal-clear encrypted voice calls. Transfer crypto directly in chat. Everything is protected by the same military-grade encryption, unified in one seamless experience.
Privacy-Conscious Users
Encrypted Messages Daily
Countries & Regions
Network Uptime
The Privacy Gap Is Bigger Than You Think
Most "encrypted" messengers still collect metadata, require personal information, and store data on central servers. Here's how Cipher is fundamentally different.
Questions? We've Got Straight Answers.
Everything you need to know about Cipher, privacy, and how we keep your data safe.
Still have questions?
hello@cipher.appTake Back Your Privacy. Download Cipher Today.
Free forever. No ads. No tracking. No compromise. Available on iOS and Android.