We made private messaging easy.
Cyphr is a free, easy-to-use, encrypted messaging app for Android and iOS. All messages are encrypted, private and 100% yours. Create a free account, generate your public and private key pair, and start messaging.


Privacy by design.
All messaging apps require some metadata in order to work. We specifically designed our servers to store the minimal amount of data necessary and then delete that data after messages are successfully delivered.
We store (briefly) |
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Note: This data is deleted when your message is successfully received. |
We do NOT store |
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Multiple layers of security.
When you use an unencrypted messaging app or traditional SMS/MMS messaging, you are essentially putting your messages in a mailbox that anyone can access. When you use Cyphr, you gain multiple layers of security.
Imagine everyone has a mailbox that requires a public key for inserting mail and a private key for withdrawing mail.
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Public Key Verification
Each time you send a message, Cyphr adds a "verification" stamp so your friend knows the message is from you and not an impostor.
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Symmetric Key Encryption
Cyphr then inserts your message into a locked envelope so your message cannot be read by 3rd parties.
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Public Key Encryption
Finally Cyphr uses your friend's public key to deliver the envelope into your friend's mailbox.
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Private Key Decryption
Only your friend has the private key to the mailbox so only they can open it and unlock your message.
Encryption Technology Benefits
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256-bit AES Symmetric Key Encryption
Single use symmetric keys ensure messages are delivered securely and efficiently
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Public & Private Encryption Key Pairings
Ensures only the intended recipient can read your messages
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Public-Key Verification
Prevents someone from masquerading as someone else and sending false messages
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SSL/TLS For Message Delivery
Allows us to encrypt your message's metadata, in addition to the content

- Casual User
- Privacy Fanatic
Be as private as you want to be.
Whether you are a casual user or a privacy fanatic, Cyphr allows you adjust the privacy settings that fit your needs. You are in control of your personal information and can enable or disable features that require it.
Your messages. Our servers. No 3rd parties.
Most other companies advertising "secure" messaging apps rely on 3rd party servers to store and transmit your messages. If a company does not own its servers, its privacy guarantees are only as good as the 3rd parties it relies on.
At Golden Frog we own our servers, write our code, and manage our own network so we can deliver on our privacy promises and offer our users the highest levels of security and speed. Our servers are based in Switzerland for maximum user privacy and protection.









A company you can trust.
Golden Frog's founders are Internet veterans who have fought to preserve online privacy, security and freedom since 1994. We arm users in 195+ countries with VyprVPN, a secure personal VPN, and Cyphr, a secure encrypted messaging app. Together these tools allow users to protect themselves online, wherever they go.
Secure more than just your messages.
- VyprVPN - Encrypt your Internet connection at home or on-the-go - Try It Free