The writing surface for people who care about authenticity, evidence, and craft. Write here. Prove it's yours. Stet your voice — forever.
A modern writing surface with the red pencil brought back. Markup that nests, replay that shows the work, exports that travel.
The academic-integrity layer for the AI era. Process evidence, not a black-box detector. Real proof your teachers can interpret and your students can trust.
Drop a .red.md file. Watch it verify offline, in your browser, no account needed. The same tool a teacher, a court, or your future self would use.
Red Stet records the process of writing — every keystroke, every revision, every paste — and packages it into a verifiable file that travels with the document. Use it because you write and you want a record of your own voice. Use it because you teach and you want to trust what you grade. Use it because the world is changing and authentic writing matters more than ever.
The output is two things: a clean document, and a sealed chain of evidence for how that document came to be. Both stay with you.
Stet is the proofreader's mark — Latin for let it stand. When an editor scratched out a correction and circled "stet" in the margin, they were telling the typesetter: ignore my edit; keep the author's original. It is the oldest mark in the editorial tradition for a single idea: this is the writing the author meant; let it stand as theirs.
That's the product. Red Stet records the writing so it can stand as yours — provably, portably, for the rest of your life.
Opt-in at sign-up. When you join Red Stet, you opt into the recording layer. For every doc you write thereafter, it builds a receipt — plain-text events inside the editor: keystrokes, paste actions, cursor moves, timestamps. You can flip it off per-doc whenever you want; your account stays opted in for everything else.
What we record. Plain-text events inside the editor — keystrokes, paste actions, cursor moves, timestamps. The events that produced the page. Nothing rendered, nothing visual, nothing observed.
What we DON'T record. No microphone. No camera. No screenshots. No screen recording. No clipboard contents from other apps. No keystrokes outside this editor window. Same list, in this order, on every Red Stet surface that touches this — consistency is the point.
At submission inside a classroom, the document and the receipt travel together. The teacher sees both. They're either consistent, or they're not.
Ever watched a dubbed film? The words don't match the mouth. You know instantly it's not the actor's voice in that moment. Red Stet does the same for writing — the document and the keystrokes either line up from start to finish, or they don't. When they don't, it's not your written voice. — Why the recording works
Other tools give you a percentage and ask you to trust them. We give you the writing process and trust you. Black-box detection has failed teachers and students alike. Process evidence is what holds up.
Your writing profile builds over years. Preserved forever, never sold. Your .red.md files verify offline through our standalone tool, free, anytime — no account required. The trust isn't conditional on us.
AI tools are part of how writing happens now. We don't pretend otherwise. We give you proof your voice is still yours — even when you use AI to brainstorm, revise, or draft.
The earlier you start writing in Red Stet, the deeper your verified record gets. Build it while you don't have to think about it. Have it when you need it.