Best JLPT Grammar App? What to Look For and How to Study Grammar

The short answer

The best JLPT grammar app is one that teaches each pattern through several example sentences, tests you in the same multiple-choice formats the exam uses, and brings your mistakes back on a schedule. A list of patterns with English meanings is not enough, because the exam asks you to choose between similar forms in context, not to recite definitions. Pick one app for daily review, then check it against real exam-style questions.

What JLPT grammar questions actually test

Grammar sits inside the Language Knowledge (vocabulary/grammar) section. At N1 to N3 that section has its own 0 to 60 score, next to Reading and Listening. At N4 and N5, Language Knowledge and Reading are combined into one 0 to 120 score, with Listening scored 0 to 60.

Across levels, grammar questions come in three recurring shapes:

• Choose the right form for a blank. Four options, one fits the sentence.
• Sentence ordering. You arrange four fragments and pick the one that lands in the starred slot.
• Text grammar. A short passage with blanks, where the right answer depends on the sentences before and after.

An app that only drills "what does this pattern mean" trains recognition. The exam trains selection under time pressure. Those are different skills.

What to look for in a JLPT grammar app

1. Example sentences in context. Each pattern should come with several full sentences, ideally at your level. A single textbook-style sentence teaches the pattern's shape but not its feel.

雨が降りそうなので、傘を持っていきます。

A good app shows how the same pattern behaves in casual speech, in writing, and in a longer text.

2. Contrast between look-alike patterns. Most lost points come from confusable pairs: ために versus ように, or the four conditionals と, ば, たら and なら. Look for lessons that put the pair side by side and explain when each is natural, not just what each means.

3. Exam-style question formats. Check that the practice includes fill-in-the-blank and sentence ordering, not only flashcards. If the app has no exam-format questions, plan to add them from a mock test or a textbook series.

4. Spaced review of your mistakes. Grammar fades fast. The app should track which patterns you got wrong and show them again after a gap, rather than moving on after one correct answer.

5. Clear level tagging. You should be able to filter by N5 to N1 so you do not spend a week on N1 patterns while N3 basics are shaky.

6. Explanations you can read comfortably. If the explanation is harder than the pattern, you will skip it. Check the language of the notes before you commit.

Free versus paid: check what is behind the lock

Many apps let you read the first lessons free and lock the rest. Before you pay, open the level you are actually studying and see whether the free part covers it. Free material is fine for finding out whether an app's explanations suit you. It is a poor basis for a six-month plan if your level is behind the paywall.

Free textbooks and public grammar references are also valid. A grammar app is not required to pass; it is a way to keep review consistent.

A 20-minute daily grammar routine

This works with any app or textbook:

1. Learn two or three patterns (8 minutes). Read the explanation, then write one sentence of your own for each. Writing forces you to use the form, not just recognize it.
2. Drill in exam format (7 minutes). Do a few fill-in-the-blank or ordering questions on those patterns and last week's.
3. Log every mistake (5 minutes). Write the sentence, the pattern you chose, and the pattern that was correct. Review the log before the next session.

Once a week, replace the drill with a timed block of mixed questions, because speed matters on test day.

Where Toey fits

Toey JLPT is a web app; there is no mobile app yet. It is not a grammar-only reference, and it does not replace a grammar textbook. Where it helps with grammar is the checking step: the mock papers let you find out whether your grammar holds up in a full, timed sitting.

• There are 140 active mock papers across N5 to N1, and 5 of them are free, one per level.
• Each mock gives a predicted score on the 180-point JLPT scale, computed by fixed rules rather than AI, so the same answers always produce the same score.
• A result counts as a pass only when the total and every section clear their minimum, and the result names the sections that sank it. That shows whether your Language Knowledge section is the weak point.
• Kana is fully free, and the study plan shows week 1 on the free tier. Kanji has stroke-order animation, tracing and guided writing cards.

Pro costs $12.99 a month, and passes and a Lifetime option also exist. If you only want grammar explanations, a textbook plus the routine above costs less. If you want to see where you stand against the exam, start with the free mock at your level.

How to know if your grammar is ready

Take one timed mock and look only at the Language Knowledge section. If you are missing questions on look-alike patterns, add contrast drills. If you are running out of time rather than getting patterns wrong, add timed blocks. If the section score is below its minimum, fix that before anything else, because a strong total cannot rescue a failed section.

Checked on 2 November 2026.

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