How it works
Five steps from a recording to a library you can study from.
Bring in one recording and Chalk handles the rest. Want proof? Watch it run on a real clip in the demo.
Bring your recording in
Record live in your browser and Chalk captures it as you go, uploading in the background so nothing waits until the end. Already have the recording? Upload a file, paste a link, or pull it in from Zoom or Webex.

Transcribe every word
The moment you stop, Chalk transcribes the audio with precise, word-level timestamps. Long recordings are split and transcribed in parallel, so even a three-hour session is ready in minutes, not hours.
Break it into a table of contents
An AI reads the full transcript and splits the recording into titled topics with short summaries. You get a clickable table of contents that covers the whole thing, start to finish, with no gaps.
- 01Recap: limits and continuity04:12
- 02The derivative, defined from scratch11:38
- 03Rules of differentiation23:05
- 04Worked example: optimization35:50
Turn it into a study pack
Every recording comes with a study pack built from its own transcript. Flashcards on a spaced-repetition schedule. A glossary that jumps to where each term was defined. Quizzes aimed at what people usually miss.
Flashcard
What does the derivative measure?
The slope of the tangent line at a point.
Key terms
- 04:12Continuity
- 11:38Derivative
- 23:05Chain rule
Written from this recording’s transcript, not generic filler.
Clip it and share
Found the part that finally made it click? Export any topic as a clip in one tap. Save it for later, or send someone the exact four minutes they missed.

See it run
Drop in a recording. Get a clickable, searchable library in minutes.
Audio, transcript, AI chapters, and a clickable player, all built for you in a couple of minutes. No account, no setup.