Best Japanese Flashcard Apps: 7 Options Compared

Inku publishes this roundup and Inku is one of the seven apps, so read our recommendation with that in mind. We have tried to make the rest of the page useful even if you choose something else: each app has a clear case where it is the better fit, and every claim about another app comes from its own website, help center or App Store listing, checked on October 16, 2026.

What we compared

Flashcard apps for Japanese differ less in their scheduling than in everything around it. We compared them on five questions that change how a normal week of study feels.

1. Who writes the cards? Some apps supply Japanese content, others give you a tool and expect you to bring the material.
2. How deep does the kanji go? A few hundred kanji and a two-thousand-kanji course suit very different goals.
3. How are reviews scheduled? Some apps adapt each interval to your answers, others use fixed stages, and some let you configure everything.
4. What else does it teach? Grammar, speaking and listening are separate skills, and most flashcard apps leave them to other tools.
5. Where does it run and what does it cost? Platform support and pricing decide whether you can study every day without friction.

Side-by-side table

App notes

Advice by level

Complete beginners

Learn hiragana and katakana before anything else, because every Japanese vocabulary deck assumes you can read them. Inku, Bunpo and Duolingo teach kana inside the app; WaniKani and most Anki vocabulary decks expect you to know it already. Our hiragana guide is a good place to start whichever app you choose.

Returning learners

If you still have an Anki collection or a WaniKani account with your history, continuing there is often easier than starting over. If you are starting fresh, pick an app that lets you begin at your level: Inku lets you choose a level and mark words you already know as Too easy, so they leave your regular reviews.

Intermediate and advanced learners

From about N3, most new vocabulary comes from reading and listening, and making your own cards becomes more valuable. Anki and Renshuu suit that work. A prepared app such as Inku still helps with a core of JLPT vocabulary and kanji, but it does not replace graded reading, listening or grammar study.

Preparing for the JLPT

The JLPT does not publish an official vocabulary or kanji list, so treat every JLPT-labelled deck as a guide rather than a guarantee. Pair a vocabulary and kanji tool with a grammar resource and timed reading and listening practice. Our JLPT N5 vocabulary guide covers the core words for the first level and how to study them.

Test an app in a week

Feature lists do not tell you whether you will open an app every day. Use one week to find out.

1. Pick one level or topic. Start with one deck, such as N5 vocabulary or travel phrases, instead of several overlapping beginner decks.
2. Check what a card teaches. You should be able to see the reading, understand the meaning and hear the word. Guessing from the English alone is not reading Japanese.
3. Finish due reviews before adding new material. Start small enough that a busy day is still manageable.
4. Use a word outside its card. Say it aloud, find it in a sentence or notice it in audio. Flashcards support language practice; they do not replace it.
5. Keep one main review queue. At the end of the week, keep the app that made the next session easy to start, and avoid reviewing the same words in two apps.

The Japanese vocabulary guide turns this into a daily plan, and the kanji flashcard guide shows how to connect characters to real words. For a direct decision between two tools, read Inku vs Anki, Inku vs WaniKani or Renshuu vs Anki, or see all comparisons.

Common questions