JLPT N4 in 90 Days: The Realistic Week-by-Week Blueprint

Why N4 Breaks the People Who Crammed N5

N5 forgives cramming. Its vocabulary is concrete, its grammar patterns are mostly independent of each other, and a motivated beginner can brute-force a pass in a couple of months. N4 does not forgive cramming, and the reason is structural: N4 is cumulative. The exam assumes you still own every N5 kanji and pattern, then layers roughly 200 new kanji, ~700 new words, and a set of grammar forms that combine rather than stand alone. If your N5 knowledge has decayed, you are not studying N4 — you are relearning N5 and learning N4 simultaneously, which is why so many learners describe N4 as a wall.

This blueprint is built around that single fact. The first phase is not new content — it is consolidation, deliberately spent locking N5 into durable memory so the N4 layer has something to bond to. Everything after is sequenced so that new material reinforces old material instead of competing with it. The principle is the same one that carried you through N5: minimal effective dose with proper review spacing. Thirty-five focused minutes built on stable foundations beats two hours spent firefighting forgotten vocabulary.

The 90-Day Architecture: Six Phases

Ninety days is roughly thirteen weeks. Unlike N5, the phases overlap deliberately: grammar begins before vocabulary expansion finishes, because N4 grammar is best learned on top of a growing word base, not in isolation. Follow the overlaps — they are not a mistake.

Phase 1 — Days 1–10: Consolidate N5 Before You Build

Resist the urge to start new material on Day 1. Spend the first ten days running every N5 kanji, word and grammar pattern back through review until your recall is fast and automatic. The goal is not relearning — it is retrieval speed. At N4, you will read sentences where an N5 word and an N4 word sit side by side; if the N5 word still costs you a half-second of conscious effort, the sentence collapses before you reach the N4 part.

Use this phase to run a diagnostic too. Take a short N5 review set and mark which items feel shaky. Those weak N5 items are your highest-priority cards — they will silently sabotage N4 reading if left buried. Kanjijo's SRS automatically resurfaces items you rate as "hard," so simply being honest in your reviews routes your study time to exactly the cards that need it.

Phase 2 — Days 11–40: Kanji and Vocabulary Expansion

This is the heaviest phase by volume. N4 adds roughly 200 new kanji and 700 new words, and most of them appear in the reading and listening sections in combination. The strategy that works is the same vocabulary-multiplier logic from N5, scaled up: learn the kanji, and let it unlock a cluster of words.

Take 持もつ (to hold/carry), an N4 staple. Once the kanji 持 is in memory, you absorb 気持きもち (feeling), 持もち物もの (belongings), and the giving-receiving-adjacent 金持かねもち (a rich person) as a related set rather than three unrelated flashcards. Kanjijo's exclusive mnemonics give each new kanji a vivid image on first contact, and its vocabulary-level mnemonics — rare among free apps — extend that memory hook to multi-kanji words, which is exactly where N4 vocabulary volume starts to hurt.

Phase 3 — Days 25–55: The Grammar That Defines N4

N5 grammar describes single facts. N4 grammar describes relationships — between conditions and outcomes, between who acts and who receives, between intention and action. These are the patterns examiners use to tell N4 candidates apart from N5 ones. Four clusters carry most of the weight:

1. The four conditionals — と, ば, たら, なら. They overlap in English (“if/when”) but differ in Japanese: と for automatic consequences, ば for general hypotheticals, たら for “once X happens,” なら for “if it's the case that X.” Confusing them is the single most common N4 grammar error.
2. Giving and receiving — あげる / くれる / もらう. Japanese encodes direction of benefit grammatically. Who gave to whom, and whether it benefits the speaker's in-group, changes the verb. There is no English equivalent, so it must be learned as a system.
3. Causative and passive — させる (make/let someone do) and られる (be done to). These reshape who the subject is, and N4 reading leans on them heavily.
4. Intention and plans — つもり, 予定よてい, ようと思おもう, potential form (食たべられる). The grammar of talking about what you will, might, or are able to do.

Kanjijo's Grammar track covers every N4 pattern with example sentences, multiple-choice drills, and fill-in-the-blank exercises in the same format as the JLPT Language Knowledge section — so you practice the recognition skill the exam actually tests, not just the rule.

Phase 4 — Days 41–65: From Patterns to Sentences

By Day 40 your SRS queue is large — likely 400+ cards in rotation, mixing surviving N5 items with fresh N4 vocabulary and grammar. This is the phase where many learners panic at the “all review, no new content” feeling and either skip reviews (which destroys the investment) or stop adding new items (which stalls progress). The correct move is to trust the algorithm: clear every due review, keep a modest trickle of new items, and let consolidation do its quiet work.

The cognitive shift in Phase 4 is from recognizing patterns to parsing combinations. N4 sentences routinely chain two or three grammar points: a conditional clause, a giving-receiving verb, and a continuous form in one breath. Reading fluency here is not vocabulary — it is the ability to hold a whole clause in working memory while the verb (which comes last in Japanese) resolves the meaning. The only way to build this is volume: many sentences, every day, slightly above your comfort level.

Phase 5 — Days 56–80: Reading and Listening Under Real Conditions

N4 reading introduces genuinely connected text: short essays, emails, and notices where the answer depends on a conditional or a cause-effect link several words away. The reading strategies that worked at N5 — scan for keywords — break down here, because the correct answer often hinges on which clause modifies which. You have to read the structure, not just the words.

Three N4 reading habits worth drilling: first, locate the main verb (it's at the end) before interpreting the clauses leading to it; second, identify conditional and connective particles (から, ので, のに, ても) because they carry the logic; third, watch for the giving-receiving verbs that tell you who benefited. Kanjijo's JLPT Reading exercises are graded to N4 difficulty and include full explanations of why each option is right or wrong — the reasoning is what transfers to new passages, not the answer key.

For listening, the N4 trap is speed plus connected grammar: a single missed conditional can invert the meaning of a whole exchange. This is why the vocabulary work in Phases 2–3 is non-negotiable — by Phase 5 you should have well over 1,000 words in active SRS rotation so that no single unknown word stalls your comprehension mid-sentence.

Phase 6 — Days 81–90: Mock Exam and Weak-Point Targeting

Around Day 81, take a full timed JLPT N4 mock exam under real conditions: no dictionary, no phone, the actual time limits (Language Knowledge — Vocabulary ~25 min; Grammar + Reading ~55 min; Listening ~35 min). Do not check answers mid-way. The point is to measure stamina and pacing, not just knowledge.

After scoring, sort every error into one of three buckets and route your remaining days accordingly:

1. Vocabulary gap — you didn't know the word. Return to Kanjijo SRS and prioritize cards marked “hard”; the algorithm will front-load them.
2. Grammar misread — you knew the words but parsed the structure wrong (usually a conditional or a giving-receiving direction). Re-drill that specific pattern in the Grammar track.
3. Speed/listening — you ran out of time or lost the audio thread. Do short daily timed sets for the final week to build pace.

Take a second mock around Day 87 if time allows. The gap between your two scores tells you whether your weak-point work is landing.

The Widget Layer: How N4 Survives a Bad Week

N4 takes three months, and no three-month plan meets reality untouched. The difference between a plan that survives a missed week and one that quietly dies is ambient exposure — review that happens without an active session. This matters more at N4 than N5, because your SRS queue is larger and a few skipped days create a backlog that feels insurmountable when you return.

Kanjijo's three widget layers are the emergency review system. The lock screen widget cycles SRS-due content every time you check your phone. The home screen widget surfaces the kanji or word you most need to review. The interactive test widget lets you answer a quick question straight from the home screen without opening the app. On a day with zero study time, twenty passive glances still touch twenty due items — enough to keep them from falling off the forgetting cliff and to keep the backlog from snowballing.

The N4 Mindset: You Are Wiring N5 Into a Network

N4 is not a separate body of knowledge stacked on N5 — it is the wiring that turns N5's isolated facts into a working system. The kanji you learned alone at N5 now appear inside N4 compounds. The grammar you used in single sentences now chains into paragraphs. Every N5 word you kept alive is a node the N4 network can attach to; every one you let decay is a hole the network has to route around.

This is why Kanjijo links kanji, vocabulary and grammar into one connected knowledge graph rather than four separate decks. When you learn the N4 verb 続つづける (to continue), it surfaces alongside 続つづく (to last), 連続れんぞく (in a row), and 手続てつづき (a procedure) — a cluster your brain stores as one structure. Clusters survive the forgetting curve. Isolated cards do not. That is the whole reason the people who built networks at N5 climb N4 steadily, and the people who memorized points hit a wall.