macOS today.
iPhone next, and properly.
burnbox is a native desktop app — a Rust core with a React front end on Tauri — because a vault that lives in a browser tab is a vault somebody else’s runtime can reach into. iOS is in active development as a first-class target, not an afterthought port.
burnbox for macOS
The public build is not out yet. It ships notarized or it does not ship — on a product whose argument is that you can verify what you run, handing you a binary macOS refuses to open would be an odd first impression.
You do not need us at all.
An invite is a burnbox:invite link or QR code that somebody already inside minted from their own address. Open the app and redeem it — it admits you to the beta and adds them as a contact in the same gesture.
Invites are unlimited and registered nowhere. A cap would require the relay to count redemptions, which would require it to learn who invited whom, which is a social graph — the exact artefact this product exists in order not to have. So an invite cannot be counted and cannot be revoked, and that is a decision rather than a shortcut.
macOS 13 or later
Apple Silicon or Intel. Roughly 400 MB on disk before your vault; meeting transcription and dictation run on-device, so the machine does the work rather than a server.
One passphrase, no account
You choose a passphrase. It derives the master key that wraps everything else, and it never leaves the session. There is no sign-up form, no verification email and no recovery link — deliberately.
iOS in progress
The Rust core and the interface were built to move, and native audio capture for on-device meetings is the piece being finished. Windows and Linux are honest maybes rather than a roadmap promise.
Read what we can't prove.
It takes two minutes and it is the fastest way to work out whether burnbox is the product you actually want.