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さとり/private by design

What's yourSatori?

Share your Satori ID.
Not your phone number.

Satori is end-to-end encrypted messaging with no phone number, no email and no account. You get a short private ID, a key that stays on your device, and messages that are encrypted before they leave it.

  • no phone
  • no email
  • no socials
pick your colour
The Satori app on an iPhone, showing an anonymous handle, your Satori ID, connect, your inbox link, recovery phrase, invite, join and conversations.
  • No phone number or email
  • End-to-end encrypted
  • Verify before you trust
  • You own your key

Five steps to privacy

Private by default. Simple by design.

From opening Satori to your first verified conversation takes a couple of minutes, and no phone number, email or name changes hands.

  1. 1

    Create your ID

    Open Satori and you get an anonymous identity, a private handle and a short Satori ID. There's no sign-up form.

  2. 2

    Share your ID

    Send your ID, an invite link or a QR code to the one person you want to hear from. Nothing else about you goes with it.

  3. 3

    Start a chat

    Every message is encrypted on your device before it's sent. No phone number, email or socials involved.

  4. 4

    Verify before you trust

    Compare safety numbers with your contact to check the key in your chat is theirs. If the number ever changes, compare again.

  5. 5

    Stay in control

    Keep your 24-word recovery phrase somewhere safe, and revoke access to a conversation whenever you're done.

A hand holding a phone open on the Satori ID screen, showing the ID 4KZF-ED76 with copy and show QR options, and a box to connect to someone else by their ID.

Your Satori ID

An ID instead of your number.

Give someone your Satori ID so they can message you. It's short, it isn't tied to your number or your inbox, and it doesn't contain your name or any other personal detail.

what you share

4KZF-ED76

Example ID. Yours is created when you open Satori.

what stays with you

  • Your name
  • Your phone number
  • Your email address
  • Your social profiles
  • Your contact list

Security by design

Encrypted from end to end.

Your words are encrypted on your device and only decrypted on theirs. In between, the message itself is unreadable.

Encrypted on your device

Your message is locked before it ever leaves your phone.

in transit

Satori's servers only ever see the message text in this encrypted form.

Opened only by them

Only the person you're writing to holds the key that can read it.

Encryption protects what you say. It doesn't yet hide which Satori IDs are talking to each other, or when.

  • No personal details needed

    Satori never asks for your name, email address or phone number.

  • Private by default

    Every message is encrypted. There's no privacy setting to forget to turn on.

  • Your key stays with you

    Your private key is created in your browser and stays on that device. Satori's servers only ever get your public key.

  • 24-word recovery

    Your recovery phrase restores your Satori identity on a new device. There's no reset link, so write it down and keep it offline.

  • Safety numbers

    Check a contact's safety number in person or on a call to confirm the key matches. If it changes later, check again before you trust it.

  • Revoke access

    Close a connection when it has served its purpose. It stops new messages, but can't take back what was already shared.

Made for first conversations

Share only what matters.

Some conversations shouldn't start with your phone number. Satori lets you talk first and decide later what, if anything, to reveal.

Satori campaign image: a recruiter and a candidate talking at a table beside a phone showing their Satori conversation, with the headline Talk first. Reveal less.

Hiring

Interview before you introduce yourself.

Speak with a recruiter or a candidate before either of you hands over a phone number or a full name.

Meeting someone new

Your number can wait.

Get to know someone on your own terms. Share your Satori ID instead of your number, and move on when you want to.

Read moreabout meeting someone new

Sources and journalists

Protect the person, not just the message.

Open a line with a source without either side handing over a phone number, an email or a name.

Read moreabout sources and journalists

What's next

Satori Mesh.

Today Satori sends messages over the internet. Next, we're building messaging between nearby iPhones over Bluetooth, starting with two phones in the same room and no signal at all.

A feature goes live only after it has been tested on real phones. Anything marked in development or planned isn't available yet.

  1. Live

    Encrypted messaging in your browser

    Anonymous IDs, invites, QR codes, safety numbers and a recovery phrase. Works today over the internet.

  2. In development

    iPhone to iPhone over Bluetooth

    A native iPhone app that lets two phones nearby exchange messages with Wi-Fi and mobile data switched off.

  3. Planned

    Relays through nearby phones

    Messages that hop through other consenting Satori users nearby, designed to stay encrypted end to end.

  4. Planned

    Automatic switching

    Satori picks internet or Bluetooth for you, once both have been properly tested together.

Straight answers

Questions people ask.

How Satori works, in plain words.

Do I need a phone number or an email address?

No. Satori creates an anonymous identity for you. People reach you through your Satori ID, an invite link or a QR code.

Can Satori read my messages?

No. Messages are encrypted on your device before they're sent, and only the person you're writing to holds the key to open them. Satori's servers only ever see the message text in encrypted form.

What can Satori see?

Your public key and Satori ID, the encrypted text of your messages, which IDs are in touch and when, and, like any website, the network address you connect from. Never your private key or the words you write.

How do I know who I am talking to?

Each conversation has a safety number. Compare it with your contact in person or over a call. If it matches, you're talking to the right key. If it ever changes, compare it again before you carry on.

What happens if I lose my phone?

Use your 24-word recovery phrase to restore your identity on a new device. Keep it offline and private, because nobody can recover it for you.

Is there an app to download?

Satori runs in your browser. On iPhone, open it in Safari, tap Share, then Add to Home Screen to keep it one tap away. A native iPhone app is in development.

Does Satori work without internet?

Not yet. Today Satori needs an internet connection. Bluetooth messaging between nearby iPhones is what we're building next.

Start in your browser

Talk first.Reveal less.

Open Satori, get your ID and send it to the one person you want to talk to. On iPhone, tap Share and then Add to Home Screen so Satori is always one tap away.

A phone showing an encrypted Satori chat beside a glass panel that reads Satori ID 4KZF-ED76, status verified, connection encrypted.