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Kuzushi: Casual Japanese

Anime, drama and slang

App Store →iOSFree app with an in-app purchase

Textbooks teach 〜ている. People say 〜てる. Kuzushi drills that gap: recognising a contraction and producing one are scored apart, because they are two different skills.

What it looks like

Understand what people actually say
From the textbook form to the spoken one
〜ちゃった is 〜てしまった
See where the spoken form came from
Every answer tells you why
What changes, and how it differs from the full form
A hundred spoken patterns
The whole catalog, progress on every one
Practice what you keep missing
The pattern and the skill that lag behind

Description from the store

Textbooks teach 〜ている and 〜てしまう. People say 〜てる and 〜ちゃった.

That gap is what Kuzushi trains. Not grammar you have never met – grammar you already learned, in the shape it actually arrives in when someone talks to you.

WHAT IT DRILLS

Every pattern is scored separately for five things, because they are five different skills:

Being able to recognize a shortened form is not the same as being able to produce it. The app counts them apart and asks about whichever is behind.

FIVE LEVELS, NOT JLPT

Shortenings do not belong to exam levels – you hear them in the first minute of any conversation. The levels here go from one change per sentence to several at once.

CASUAL IS NOT RUDE

Register questions show a situation and two forms that are both correct Japanese. Sometimes the right answer is the polite one. The app teaches when, not just how.

HOW IT WORKS

A pattern you have never met is explained before it is asked about – what changes, why, and one sentence showing it. New material arrives at a pace you set.

SENTENCES, WITH AI

The Sentences tab takes a line from an anime, a drama or a manga – typed or scanned from a photo – and shows its full form, with every contraction named after a pattern from this app. It works the other way too: write a sentence of your own in full form and see how it is shortened in speech, at levels 1, 3 and 5. You can add the sentence to its pattern as an example. Five requests a month are free; more come with a subscription: PLN 9.99 monthly or PLN 79.99 yearly, auto-renewing, cancellable in your Apple ID settings. Levels and exercises do not depend on it.

NO ACCOUNT, NO ADS

The material ships inside the app and learning works offline. Your progress and your list of sentences stay on the device; only the Sentences tab talks to our server, sending just the sentence. No sign-in, no tracking, no advertising. Levels 1 and 2 are free; one purchase opens the rest, for good.

TERMS

Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Privacy Policy: https://jd-japanese.pl/kuzushi/1.5/en/privacy.html

The description above is the same text that stands on the App Store product page – it comes from the same file.

App Store →iOSFree app with an in-app purchase

Common questions

What does Kuzushi teach?

Textbooks teach 〜ている and 〜てしまう. People say 〜てる and 〜ちゃった.

That gap is what Kuzushi trains. Not grammar you have never met – grammar you already learned, in the shape it actually arrives in when someone talks to you.

Does it work without an account or a network?

The material ships inside the app and learning works offline. Your progress and your list of sentences stay on the device; only the Sentences tab talks to our server, sending just the sentence. No sign-in, no tracking, no advertising. Levels 1 and 2 are free; one purchase opens the rest, for good.

Learning Japanese

Documents

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