UNIVRSLL Chat
A chat app for browser, phone and desktop where direct messages are encrypted on your device — the server only ever stores ciphertext.
The parts that matter.
End-to-end encrypted DMs
Text and file attachments are encrypted on the sender's device using X25519 key exchange. Your private key never leaves your computer — so the server, and even I, only ever see ciphertext.
Channels and direct messages
Public channels for group conversation, private one-to-one DMs you can create and delete. Real-time across every machine you're signed in on.
Works offline
Messages queue while you're disconnected and send the moment you're back. Nothing is lost across a dropped connection.
Files, images, markdown
Share attachments and images inline, and format messages with markdown.
Updates itself
Ships with an auto-updater — install once and it keeps itself current in the background.
Blocking and reporting
Block a user to hide their messages and DMs, and report accounts to admins.
From start to done.
- Open the app in your browser — nothing to install
- Create an account and sign in
- On a phone, add it to your Home Screen and it behaves like a normal app
- Prefer a desktop app? Download it for Windows or Mac — it is not code-signed yet, so choose "More info → Run anyway" on Windows, or right-click → Open on Mac
Why it exists, and how it’s built.
The encryption, honestly described
Each device generates an encryption keypair on first login. The public key goes in your profile; the private key stays on the machine. Direct messages are encrypted with a shared key derived from both users’ keys, so the server stores nothing readable.
The tradeoff: because the private key only lives on your device, DM history can’t be recovered on a new machine yet — there’s no key backup. Lose the device, lose access to old encrypted messages. Public channels are deliberately not encrypted, since they’re public by definition.
Built with
Tauri v2 wraps a React and TypeScript frontend in a Rust shell, which keeps the installer small compared to an Electron build. Supabase provides Postgres, auth, realtime, and storage, with row-level security governing access. Encryption is libsodium.
Status
Runs in any browser, on iPhone and Android as an installable web app, and as a desktop app for Windows and Mac. The browser version shows no warnings at all. The desktop builds are not code-signed yet, so Windows shows a SmartScreen prompt and Mac needs a right-click → Open on first launch. Actively developed.
Other things we’ve built.
Clipreel
LiveTurns hours of footage into a thirty-second montage, with every cut landing in a pause.
Learn more
Image Vault
LiveSearch seven image libraries at once and keep a licence record for everything you download.
Learn more
UNIVRSLL Command Center
LiveFive Windows utilities in one app: Wi-Fi keys, network details, system info, IP lookup and disk usage.
Learn moreWant something like this, built for you?
Tell us what you have in mind, even if you’re not sure how it would work. The first conversation is free.