Support
Last updated: 30 September 2026
Need a hand with YoMatrix? Email support@yomatrix.app and we'll get back to you.
Getting started
- Download & install. YoMatrix is in beta testing on iPhone, iPad, Mac, Android and Windows — install it like any other app, then open it to begin.
- Pick a username. YoMatrix needs no phone number and no email. You choose a globally-unique
@username, and your encryption keys are generated on your device. - Add contacts. Scan a friend's QR code in person for the strongest verification, or add them by their username. You can confirm a chat is secure by comparing the 25-digit safety number.
- Permissions. Allow notifications so you can be reached for new messages and calls, and grant camera/microphone access when you want to scan a code or place a call. You can change these any time in iOS Settings.
System requirements
iPhone and iPad running iOS 17 or later, Mac, Android and Windows.
Pricing
- Pricing for YoMatrix hasn't been set yet — we'll announce it before launch. It may be free to download, with optional paid features later.
- Any payment will go through Apple's App Store. We never see your card details — Apple processes payments and handles refund requests under its policies.
Troubleshooting
- Not getting message or call alerts. Make sure notifications are allowed for YoMatrix in iOS Settings, and that Focus / Do Not Disturb is not silencing them.
- A call won't connect or sounds rough. Calls connect device-to-device whenever the network allows and fall back to an encrypted relay otherwise; a restrictive network or weak signal can affect quality. Try Wi-Fi or moving to better coverage.
- “Safety number changed.” This appears when a contact reinstalls or switches devices. Re-verify by comparing the 25-digit safety number, ideally in person, before sending sensitive messages.
- Moving to a new iPhone. Because chats are end-to-end encrypted, their history lives only on your old phone and cannot be recovered from our servers. An encrypted transfer to a new phone is coming soon.
Privacy & security
Messages and calls are end-to-end encrypted. See our Privacy Policy for exactly what does and doesn't leave your device.
Common 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.
Still need help?
Email support@yomatrix.app with your device model, your iOS version and a short description of the issue, and we'll help you out.