Every learner eventually asks this, usually after buying a notebook and downloading three apps.
The honest answer is that the format matters much less than whether you review on a schedule - but the two do have genuinely different strengths.
What apps do better
Scheduling. A spaced-repetition app decides what you see and when, based on what you keep forgetting. This is the single highest-value feature in vocabulary study, and doing it manually on paper is tedious enough that almost nobody sustains it. Spaced repetition explained.
Portability. The review happens on a bus, in a queue, during a break - which is when most of our students’ study time actually exists. Studying on your phone.
Audio. Hearing the word each time it comes up costs nothing and helps the listening section.
Volume. 800 words for N5, 1,500 for N4, 3,700 for N2. Paper does not scale gracefully to those numbers.
What paper does better
Encoding. Writing a word by hand forces slower, deeper processing than tapping “good”. The effect is real, particularly for kanji, where the act of writing fixes the components.
Organisation by meaning. A page for transport, a page for the workplace, a page for verbs of giving. Grouping by theme produces connections an app’s random order does not.
Sentences. Paper encourages writing the word inside a sentence, which is how vocabulary becomes usable rather than merely recognisable.
It does not contain a browser. A notebook cannot show you a notification.
The hybrid that works
Most of our students settle on the same division:
- New word met → written in the notebook, with a sentence, in its theme section.
- Same word → added to the app that evening for scheduled review.
- Word repeatedly missed in the app → moved to a separate “difficult” page in the notebook and rewritten with a different example sentence.
Paper for encoding and understanding, app for retention and volume. Ten minutes of paper, ten minutes of app, daily.
What actually decides the outcome
Not the tool. Three habits:
- Daily, short. Twenty minutes every day beats three hours on Sunday, and it is not close.
- Words in context. A word learned alone is recognised; a word learned in a sentence is understood. This matters most for the reading section.
- An error list that you actually revisit. Whatever the medium, the words you keep missing deserve different treatment from the ones you know.
Then test it under pressure, which is where recall either happens or does not. Our free exam demo runs a full timed paper on JFT-Basic vocabulary; for JLPT, past papers are the equivalent.