Japanese 12-key
Tap and flick with voiced sounds, small kana, and symbols.
Knowch KeyboardONE KEYBOARD · THREE LANGUAGES
One keyboard,
wherever language takes you.
Korean, Japanese, and English in one keyboard—plus a unique way to write Japanese from Hangul pronunciation.
Typing and core conversion stay on your device.
HANGUL오나카스이타↓お腹すいた
ON DEVICE ●
30 daysHangul-to-Japanese free trial
$3One-time unlock after trial
3 languagesKorean · Japanese · English
On deviceTyped text stays private
ONE KEYBOARD, EVERY DAY
Stop switching keyboards.
Keep writing in one place.
Start with familiar Korean, Japanese, and English input. Add Hangul-phonetic Japanese when it is the fastest way to write.
Romaji Japanese
Turn QWERTY Romaji into hiragana, katakana, and kanji.
Hangul to Japanese
Type Japanese sounds in Hangul and choose locally ranked candidates.
COREKorean
Choose two-set, single vowels, Cheonjiin, or Naragul.
English
A full QWERTY layout for search, sign-in, and URLs.
Input tools
Switch candidates, emoji, clipboard, numbers, and symbols instantly.
REAL APP · REAL KEYBOARD
Open the app. Start typing.
Explore setup, Japanese 12-key input, and the theme store in the real app.
HOW IT WORKS
Type Hangul. Finish in Japanese.
Enter the Japanese sound in Hangul
→Read and rank local candidates
→Choose hiragana, katakana, or kanji
MAKE IT YOUR KEYBOARD
Make the keyboard
feel like yours.
Choose a clean everyday theme or a character design that flows across the whole keyboard. New themes arrive without an app update.
FREEDark
An easy-on-the-eyes night palette
SPRINGSakura
Spring that flows across the keys
NEWHammy Picnic
A sunflower garden across every key
Light is built inDark is free. Sakura and Hammy are available as individual premium themes.
PRIVATE BY DEFAULT
Your typing stays on your device.
Typing, core conversion, and candidate learning run on device. Network access is limited to entitlements, dictionaries, themes, updates, and optional notifications.
- 01No typed-text collection
- 02Prediction pauses in password fields
- 03Clipboard history is off by default
- 04Purchases restore through Google Play
01Is the app paid?＋
The keyboard and standard Korean, Japanese, and English input are free. Hangul-to-Japanese conversion has a 30-day free trial, then a one-time $3 unlock.
02Does the keyboard stop after 30 days?＋
No. Only Hangul-phonetic Japanese conversion is limited. Core keyboard input continues.
03Will purchases remain after changing phones?＋
Yes. Sign in with the Google Play account used for purchase to restore your unlock and purchased themes.
04Is my typed text sent to a server?＋
No. Core conversion and candidate learning are processed on your device.
05How much are themes?＋
Light is built in and Dark is free. Premium themes are individually priced in Google Play.
SERVICE GUIDE
Knowch Keyboard guide
Updates, purchases, privacy, and data deletion—everything you need in one place.
NOW ON GOOGLE PLAY
Available now
on Google Play.
Core keyboard features are free. Hangul-to-Japanese conversion includes a 30-day trial and a one-time unlock.
Open Google Play