For private language teachers
Record the lesson.
The recap writes itself.
Lesson Studio listens to your lesson, drafts a recap in your student’s language, and waits for your OK. Every student gets a portal with their lessons, vocabulary, homework, and progress.
Every new account gets 3 recaps free — no card needed.
Recaps to review3 waiting
Built from your recordings. Nothing reaches a student until you send it.
#3MinamiLesson 3 · Aug 16Review & send
#2EylulLesson 2 · Aug 17Review & send
#1KazuyukiLesson 1 · Aug 13Review & send
Students
5
each with a portal
Drafts
3
waiting on you
Recaps sent
12
to students
Compatibility
Works where you already teach.
PreplyitalkiGoogle MeetZoomCafetalk
The recorder is a Chrome extension — if your lesson happens in a browser tab, it works. No bot joins the call, nothing installs on your student’s side.
What you get
The admin half of teaching,
handled.
🎙️
Recaps from your recording
Record with the KOKU browser extension — Zoom, Meet, anything on screen. The AI transcribes the lesson and drafts a structured recap: what you covered, key vocabulary, homework.
✅
You always review first
Nothing reaches a student automatically. Every recap sits in your review queue where you edit, fix, and hit send — your name is on it, so you get the final word.
🌐
In the student's language
Recaps come out in whatever language each student reads best, with romaji options for Japanese learners. Set it once per student and forget it.
🎓
A portal for every student
Each student signs in to their own space: every recap, the vocabulary they've met, homework, and audio practice — instead of recaps buried in a chat thread.
📈
Progress you can show
Scores, talk time, and vocabulary growth chart themselves lesson by lesson. When a student asks "am I improving?", you have the graph.
🗓️
Notes, tests & bookings
Keep private notes per student, build tests from what you actually taught, and let students book and pay for lessons — all under your own branding.
How it works
Three steps, one habit.
1
Teach and record
Open the KOKU recorder in your browser and teach like you always do. It captures the lesson wherever you hold it — Zoom, Meet, or anywhere else.
2
Review the draft
Minutes later a recap is waiting in your queue — summary, vocabulary, homework, in the student's language. Edit anything, then hit Review & send.
3
It lands in their portal
The student gets the recap in their own portal, vocabulary joins their word bank, and their progress charts update — without you touching a spreadsheet.
Exercises & tests
Saved lessons become
practice & exams.
Every lesson is saved, so a full exam can be built from exactly what a student worked on — reading, writing and speaking, in whichever language you teach. You review every question, then publish.
1L1
2L2
3L3
TEST4L4
5L5
6L6
7L7
EXAM8L8
You choose what a test covers — one lesson, or a block of them.
Practice test · Lessons 1–4
James’s test is ready to review
Draft · A2Publish to student →
The passage
Ana had wanted to see the coast for years, but there was never enough money at the end of the month. She put a little aside every payday, and last spring she eventually booked the trip. The week she spent there turned out to be the most memorable of her life.
Four to six sentences, written out of the grammar those lessons actually covered. Your copy carries the English translation under it.
Comprehension
1Why did Ana wait so long to travel?
AShe was saving up for it
BShe did not like the coast
CHer sister was too busy
2How did she feel about the week afterwards?
ADisappointed
BShe remembered it as the best of her life
Real teacher · Real results
Loved by the teachers
who use it.
“I feel closer to my students now — and honestly, I feel like a better teacher.”
Noa
Japanese teacher · 3 months with KOKU
@genoa_nopi_japanese
15+ hrs
saved every month on admin
3 months
using KOKU, every lesson
Every student
gets a recap after class
“I'd been looking for these features for a couple of years. There was always something missing between me and my students.”
— Noa
“I'd built parts of this myself — but never to the level KOKU offers.”
— Noa
The arithmetic
80 lessons a month.
Two of them pay for it.
A teacher with twenty students. Four lessons each this month, at $35 a lesson. Here is her whole month — one dot per lesson.
Week 1W1
Week 2W2
Week 3W3
Week 4W4
78 lessons stay hers2 lessons cover Lesson Studio — all 80 written up
Lesson Studio
$69
Pro plan, per month
Share of her month
2.5%
2 lessons out of 80
Every one of those 80 lessons comes back written up — recap, vocabulary, homework, progress — for less than she charges for two of them.
Pricing
The price of a lesson or two.
Power your lessons with AI, sharpen what you teach, and keep the students you have — for about what you charge for a single lesson.
Starter
Teaching on the side$19/month
≈ about half a lesson's payThree or four lessons a week, written up. For teaching alongside something else — or for the months the schedule thins out and you would rather step down than step away.
AI lesson recaps15 per month
- Unlimited students, each with their own portal
- Recaps in the student's language, reviewed by you
- Progress analytics — scores, talk time, vocabulary
- Private notes, tests, and homework
- Lesson booking & payments
- Your own branding
Studio
A steady week$29/month
≈ about one lesson's payA steady weekly schedule, covered with room to spare. One lesson's pay for a month where every lesson comes back already written.
AI lesson recaps35 per month
- Unlimited students, each with their own portal
- Recaps in the student's language, reviewed by you
- Progress analytics — scores, talk time, vocabulary
- Private notes, tests, and homework
- Lesson booking & payments
- Your own branding
Pro
★ Most popular$69/month
≈ under two lessons' payOver twenty lessons a week, every one of them recapped. For a full book of students, where writing them up is the part of the job that eats the evening.
AI lesson recaps90 per month
- Unlimited students, each with their own portal
- Recaps in the student's language, reviewed by you
- Progress analytics — scores, talk time, vocabulary
- Private notes, tests, and homework
- Lesson booking & payments
- Your own branding
+5recaps
$10
one-off, any time
Busy month? Top up instead of upgrading.
A week of cover lessons should not cost you a bigger plan for the rest of the year. Add five recaps whenever you need them, on any plan.
- They never expire
- Only spent after your monthly recaps
- No change to your plan
Every new account starts with 3 free recaps, no card needed. A recap only counts when it’s built — reviewing, editing, and re-sending are always free.
Your next recap writes itself.
Start your free trial — 3 recaps on the house. Install the recorder, and your first lesson comes back as a recap waiting for your review.
Start free trial