For language teachers
Focus on teaching.
We handle the rest.
Not another app. A custom student system designed and built for each teacher.
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.”
15+ hrs
Saved every month on admin
3 months
Using Koku Labs, 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 Labs offers.”
— Noa
Custom recaps
Every lesson, recapped
automatically.
After each class, your student gets a clean, branded recap — progress graphs, lesson notes, corrections, vocabulary, and interactive practice, all in one place.
Tap to explore the recap
Past Simple, Time Expressions & Connectors
English Lesson Recap · Michael & Anna
student
Michael Way
lesson
Lesson 5
date
June 23, 2026
Progress
Mastery score
8.0 /10
▲ +0.4
Vocabulary
320
▲ +14
Lessons
6
completed
Talk time
Average — student vs teacher
Student talk time per lesson · 50% target
Lesson score over time
Out of 10, across your last 6 lessons
Vocabulary growth
Total words learned, lesson by lesson
Grammar mastery
How each grammar area is coming along
Progress
Students see how
far they've come.
Every recap feeds a live progress view — the same metrics tracked across every lesson, so students can watch themselves improve.
Talk time
% of the lesson the student spoke
Lesson 1 → 8
Score progression
Confidence & independence, 0–10
Lesson 1 → 8
Vocabulary growth
Total words learned over time
Lesson 1 → 8
Exercises & tests
Saved lessons become
practice & exams.
Because every lesson is saved, the tool builds custom exercises for each student automatically — and turns blocks of lessons into real tests to evaluate their progress.
Custom exercises after every lesson
Because every lesson is saved, the tool builds practice targeted to exactly what each student worked on — automatically.
A progress test after 4 lessons
Every block of lessons turns into a personalised test, so students can see how far they've come.
A full exam after 8 lessons
A bigger evaluation covering everything so far — generated for you and ready to share.
Progress test · Lessons 1–4
James's test is ready
1. Choose the correct form: "Yesterday I ___ to school."
2. Match the word to its meaning
Notes
Notes that write
themselves.
Record a quick voice memo and the lesson notes, examples, and homework checklist are generated for you. Everything your student needs, captured the moment the lesson ends.
Voice memo
Lesson notes
Homework
This month
$2,310
Collected
94%
Payments
Get paid without
chasing anyone.
Track who's paid, who's due, and what you've earned — all in one view. Automatic reminders go out so you never have to send that awkward "just checking in" message again.
Own it vs rent it
Build your own.
Don't rent someone else's.
The big platforms give their teachers tools — but keep the students, the brand, and a cut of every lesson. Here's the difference.
With Koku Labs
Your own platform
- You own the student relationship — and the data
- Built around how you actually teach
- Your branding, start to finish
- Keep 100% of your rate — no commission
- Recaps, progress, tests & payments in one place
- Students stay with you, not a marketplace
Preply · italki · generic apps
Relying on others
- The platform owns your students
- Generic, one-size-fits-all tools
- Their brand front and center
- 15–33% commission on every lesson
- Features locked to their roadmap
- Students can be poached by other teachers
Pricing
One simple price.
Founding Teacher
Limited spotsFounding price, locked in for life. Going up to $79 after launch.
We design and build your whole system for you — no setup fee. You only pay the monthly price.
- A custom student system, built for you
- Automated lesson recaps in any language
- Voice-memo notes & homework
- Student progress dashboards
- Payments & automatic reminders
- Your own branding
- Unlimited students
- Priority support
Get a prototype
See it built for you — free.
Tell us about your teaching and we'll build you a real recap prototype. After you submit, you'll book a quick call with us.