Look up the word you’re writing
Highlight Japanese or English inside a note to open the dictionary.
Kaku
Write Japanese with your dictionary just above the keyboard. Look up words as they change form, insert conjugations into a note, and ask for on-device writing suggestions when you want a second pair of eyes.
Free download · Optional Premium upgrade
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Instant Dictionary
Highlight any word as you write and matching entries appear right above the keyboard, readings, word types, and real example sentences included. Powered by a built-in offline dictionary, so lookups are instant and work anywhere.
Write With Training Wheels
Stuck on a word? Highlight the English and insert the Japanese in one tap, already in the conjugated form your sentence actually needs.
Translate Your Notes
Check your sentence structure by translating an entire note into your native language, with support for 20 languages.
MADE FOR THE WAY YOU STUDY
Kaku, in detail.
Writing Japanese with a dictionary close at hand.
iPhone, iPad & Mac
Free
Free to download
Recognise words in their conjugated forms
Look up the form you found in a sentence, then follow it back to its dictionary entry.
Read along with your own writing
Play the entire note or speak just the selected text.
Build a notebook you can come back to
Organise notes in folders, search your writing, and format key passages.
Premium
Optional in-app upgrade
Insert the form your sentence needs
Open a verb or adjective’s conjugations and grammar patterns, then tap a form to insert it directly into your note.
Review your own Japanese
Get on-device grammar and wording suggestions for a selected passage.
Translate a selection or the whole note
Check a phrase while you write, or translate the complete note into your chosen language.
Turn printed Japanese into editable notes
Scan text with your camera and bring the recognised Japanese into your notebook for lookup, listening and review.
Keep your notebook across devices
Sync your notes through iCloud so the writing you start on iPhone is there when you return to your iPad or Mac.