YoMATRIX
End-to-end encrypted chats and calls, disappearing messages and stories — with no phone number. Built for iPhone, iPad, Mac, Android & Windows.
A fresh key for every message
Every message is sealed on your device with Curve25519 and AES-256-GCM — and a brand-new ephemeral key each time, so each message is sealed on its own. The server only ever sees scrambled ciphertext — never anything readable.
- Curve25519 → HKDF → AES-256-GCM, end-to-end, on-device.
- Per-message keys — a fresh ephemeral key for every single message.
- 25-digit safety numbers let you verify there's no one in the middle.
A messenger that does more
Every chat is sealed on your device — and YoMatrix still does the things you actually want: it can translate a message as it lands, transcribe a voice note, make messages disappear, or share a story.
Try one:
Pick one, or tap “Play the chat” ↓
One app, everything private.
Every feature lives in one private messenger — no phone number, no tracking. Tap any app to see what it does.
Tap any app icon to open its details.
Inside the app
Real app screens, shown with sample data.
Chats, contacts and groups 
Chat across languages 
Groups, polls and mentions 
25-digit safety number 
Encrypted voice & video calls 
Group video calls 
Stories 
Disappearing messages 
Email, in the app 
No phone number 
Everything a chat needs 
Bots & developer API
On iPad, too
The same app on a bigger screen — and it's on Mac too.
Group video calls 
Groups, polls and mentions 
Email, in the app
On Mac too
Group video calls
Privacy you don't have to think about
Every feature is built so privacy is the default state — your messages are only ever readable on your devices. Tap any feature to see what it does.
Your chats on all your devices, on your terms.
Link a tablet, a computer or a second phone to YoMatrix in a few seconds, face to face with your phone. Messages stay end-to-end encrypted.
- From your phone you decide what each device may do: read and reply, or read only; all chats or just a few; how much history it keeps.
- Pause the work computer in the evenings, link a laptop just for tonight, or remove a device with one tap.
- Your contacts don't need to do anything.
Your family/business hub stays yours.
Invite someone outside your family hub: a grandparent, a friend or a client. You decide which chats they can see, whether they can reply, and until when. Remove them any time with one tap. They need nothing but their own phone.
- Guests are marked as guests.
- For companies: invite clients and partners into one project chat each, read-only or read-and-reply, until a date you set.
Conversations only you two can read
Every message and call is encrypted on your device with a fresh key — so there's no readable copy on any server for anyone, including us, to leak or hand over. Calls connect device-to-device whenever the network allows.
- End-to-end encrypted messages, voice and video — with a fresh key for every message.
- Group calls connect device-to-device whenever the network allows, so media flows straight between devices.
- No ads, no data brokers, no message scanning — and no phone number to give up.
- Runs on our own self-hosted servers, not a big-tech cloud, over certificate-pinned connections.
Frequently asked questions
Is YoMatrix really end-to-end encrypted?+
Yes. Messages and calls are encrypted on your device with Curve25519 and AES-256-GCM, and only the people in the conversation can decrypt them. Every message even uses a fresh ephemeral key, so each one is sealed on its own rather than under a single long-lived key.
Do you need my phone number?+
No. You sign up with just a username, and add people by QR code or @handle — there's no phone number to share and no need to upload your contacts.
How are calls kept private?+
Calls connect device-to-device wherever possible, so audio and video flow directly between phones rather than through a central server. On restrictive networks a call may relay through an encrypted server just to connect, but the media stays end-to-end encrypted the whole way.
What can the server actually see?+
The server is a blind relay — it forwards encrypted data it can't read. Like every messenger, it needs minimal routing metadata (who's talking to whom, when, and whether you're online) to deliver your messages, but it never sees the contents of your messages or calls, and your keys never leave your device.
How much does it cost?+
Pricing hasn't been set yet — we'll announce it before YoMatrix launches. It may be free to download, with optional paid features later; any payment would go through the Apple App Store.
Which devices can I use it on?+
iPhone and iPad on iOS 17 or later, Mac, Android and Windows. YoMatrix is in beta testing now.
Say it privately.
YoMatrix is an end-to-end encrypted messenger. Your conversations stay between you and the people in them.
In beta testing now on iPhone, iPad, Mac, Android and Windows.
No phone number, no ads, no tracking — ever.
YoMatrix is in beta testing. Leave your email and we'll tell you the moment it's available.
By signing up you agree to receive one launch email — nothing else. Never shared, deleted on request. Want news about our other products too? Use the contact page.
Your messages and calls are encrypted on your device, so no one — including us — can read them. No ads, no trackers, no message scanning.
More privacy-first tools we're building. Take a look:
