What Chalk keeps, and what it doesn't.

Your recordings and uploads (the video or audio itself), the transcripts and chapters built from them, and any study material generated on top, like quizzes and notes. If you make an account, we also keep your email, your name if you gave one, and your plan.

Media files live in Vercel's file storage. Everything else lives in a Postgres database. Both are hosted in the United States.

Audio is transcribed by OpenAI's Whisper, and transcripts are summarized and chaptered by OpenAI's GPT models. That means the audio of what was said in your recording is sent to OpenAI for processing. We use OpenAI's API, which by OpenAI's policy does not train models on the data it processes.

Anyone with a recording's link can watch it and read its transcript. That's what makes sharing with other people work. Editing and deleting stay with whoever created it. Links are long random ids, not guessable, but a link is a key: share it only with people you'd hand the recording to.

Checkout and card handling are done entirely by Stripe. Card numbers never touch our servers. We keep only your Stripe customer and subscription ids so your plan stays in sync.

Two, both functional: a session cookie that keeps you signed in, and an anonymous id that ties demo recordings to your browser so strangers can't touch them. No advertising trackers, no analytics cookies.

Deleting a recording in the app removes its media, transcript, and generated material. If you want your whole account and everything in it gone, email us and we'll do it. Not a dark pattern, just a small team without a self-serve button for it yet.

Recording other people comes with responsibilities that no privacy page can take off your plate. If you record other people, make sure you're allowed to. Imported videos stay subject to their source's terms, which is why Chalk doesn't let you download or export them.