Your identity. Your own.
Create a ZK identity without a phone number or email. Connect through an identifier and an invitation.
Independent identity
Private beta in preparation
A little closer.
A little closer.
A lot more private.
For the things that stay between us. ZK is building a calmer way to connect, with an identity that isn’t tied to your phone number.
See current release availability.
R
Raha
Encrypted conversation
Today
Sometimes, all you need is a good conversation.10:24
A quiet place for our kind of conversations.10:24 · ✓✓
0:12
10:25
Right here. Together.10:25 · ✓✓
Write a message…
Private, from the first hello
No phone number required
Your identity, your keys
No tracking SDKs
Less noise. More connection.
Room for what matters.
A messenger should feel good. At first glance, with every touch, and throughout a long conversation.
A little less distraction.
Light surfaces, readable text and simple paths. Designed to keep the focus on people and what they have to say.
Calm, considered designYour keys stay with you.
New conversations use end-to-end encryption by default. Verifying your contact is part of the experience.
Encryption by defaultPrivacy, without the fine print
Trust begins
with transparency.
ZK is still in development and testing. Encryption is one part of protection. Connection reliability, device security and contact verification matter too.
Encryption for new conversations
Messages are encrypted for the recipient’s device. Private keys stay on the device.
Know who you’re talking to
Verify your contact’s identity. A changed key should never pass unnoticed.
Clear about the limits
ZK does not guarantee anonymity. In a direct connection, your contact can see your IP address.
From your pocket to your desk
A familiar feeling.
On a different screen.
One design direction across four platforms. Each release must pass installation and message-delivery checks.
Android
Preparing a beta build
No public download yetiOS
Preparing for device testing
No public download yetmacOS
Preparing the desktop release
No public download yetWindows
Preparing the application package
No public download yetSee Downloads for the available packages and installation details. View downloads
Before the first hello
Good questions.
Clear answers.
A few things to know before getting started with ZK.
Can I download ZK now?
See Downloads for the current Android beta and other platform availability.
Do I need a phone number?
No. The current ZK identity is based on cryptographic keys and does not require a phone number or email.
What if my contact is offline?
Your contact needs to be online to start the first conversation. After that initial connection, offline delivery depends on mailbox and network availability and still needs real-world validation.
Is ZK completely anonymous?
No. Encrypting content does not hide all network information. Relays can see connection metadata, and a direct connection reveals your IP address to your contact.
Is the preview the installable app?
The illustration is an interface concept. Release details may change. Calls, groups and multi-device features are not yet verified for public use.
Better conversations start here.
Have a question or feedback? We’d love to hear it.