Try Batchim Master first, write one review.
Batchim Master — 18 lessons on sounds that don’t match the spelling. 30 people try it first and each leave one review.
Applications for tester round 1 closed on 12 October. The next event, the 30-Day Challenge in November, is open for applications until 31 October.

- Apply
Kids, adults, families, teachers. (Closed)
- Results
30 testers. Codes go out by email.
- Test
Two weeks with the 18 Batchim Master lessons.
- Review
One post in the community board, or an App Store review.
What you get
- Batchim Master, free
The ₩4,400 pack unlocked by code. It stays yours afterwards.
- Your name on the board
If you like, we introduce your review by nickname.
- Next packs first
New lesson packs reach testers first.
What we ask
- Two weeks of use
At least half of the 18 lessons.
- One review
One thing you liked, one thing to fix — that’s enough.
- A short survey
Three minutes, by email.
Applications · closed
2026-09-29 – 2026-10-12
Applications for tester round 1 closed on 12 October. The next event, the 30-Day Challenge in November, is open for applications until 31 October.