The KOKU recorder

Record a language lesson. Get it back written up.

KOKU records your online lesson from inside Chrome, with no bot in the call. A few minutes after it ends, the hour comes back as a recap, a vocabulary list, corrections and progress.

For teachersFor learners →
How it records
A free Chrome extension: your microphone and the lesson tab, as two tracks
Works with
Zoom in the browser, Google Meet, Preply, italki: any lesson in a Chrome tab
Joins the call
No. Nothing shows on the other person's screen
Lessons
One-to-one. Not group classes
Languages
27
You need
Google Chrome on Mac, Windows or Linux. Reading works on any phone

How it works

  1. Add the recorder to Chrome. It is free, one click from the Chrome Web Store.
  2. Press record when the lesson starts.
  3. Read the write-up a few minutes after it ends.

Why two tracks matter

Your microphone and the call are recorded separately, so the write-up knows who said what: which new words the learner used, which mistakes were theirs, and how much of the hour they actually spoke. One mixed recording cannot tell.

What comes back

  • What you covered, written up.
  • Every word that came up, with its meaning and a reading for non-Latin scripts.
  • The learner's mistakes, quoted back with corrections.
  • Practice and flashcards built from the lesson.
  • Talk time and progress across every lesson.

One recorder, two products

  • Teachers: Lesson Studio. You record, review the recap, and it goes to your student's portal. 3 recaps free, then from $29 a month.
  • Learners: Lesson Journal. You record your own lessons and your teacher needs no account. 2 write-ups free, then $6.99 a month.

Recording and consent

Ask the other person before you press record. Some countries require everyone on a call to agree, and Preply and italki have their own rules about recording.

Questions

Does it work for group lessons?

No. Lesson Studio is built for one-to-one lessons: one teacher, one student. The recorder hears your microphone and the call as two tracks, so with several students on a call their voices share one track and the recap cannot tell who said what.

Which lesson platforms does it work with?

Any lesson that happens in a Chrome tab: Zoom in the browser, Google Meet, Preply, italki. No bot joins the call.

Do I need a computer?

To record, yes: Google Chrome on a Mac, Windows or Linux computer. Your students open their recaps on any phone.