Inku vs Anki: which is better for learning Japanese?

We recommend Inku over Anki for most Japanese learners who want to open a native iPhone app and complete prepared daily reviews. Inku supplies the Japanese catalog, bundled audio, and FSRS schedule. Anki is better when you want to build the material yourself or preserve an existing collection. Ownership disclosure.

The short answer

Choose Inku when you want the app to answer three questions for you: which Japanese cards exist, what audio belongs with them, and what is due today. Its native iPhone library covers 208 kana, 2,701 vocabulary cards, 429 kanji, and 436 phrases. Of the vocabulary cards, 2,461 are organized across JLPT N5 through N1 and 240 are topic cards. The main library includes 6,000 bundled audio clips.

Choose Anki when the material is already yours. It can hold textbook notes, mined sentences, specialist terminology, audio, images, and custom prompts. It also spans desktop, AnkiWeb, the paid official iPhone app, and the free AnkiDroid client.

That exception matters. If you have spent months refining an Anki collection, switching to Inku would discard the part Anki does best. Inku has no Anki deck or review-history import.

Why we recommend Inku for most Japanese learners

The useful difference is the amount of curriculum work left to you. Inku starts with a Japanese-only catalog. You choose a bundle and a small number of new cards, then work through the queue. Kana, vocabulary, kanji, phrases, readings, and audio already share one format.

Anki can also start quickly. You can choose a prebuilt shared deck and use the standard card types without installing add-ons. The harder question comes later: whether the deck matches your Japanese, whether its answers are easy to grade, and who will correct or replace weak cards. None of that makes Anki defective. It means Anki gives the editorial decisions to you.

For a learner who wants a prepared daily Japanese habit, Inku removes more of those decisions. That is why it is our recommendation. Try Inku with a small daily set before committing.

FSRS is not the deciding difference

Both products support FSRS. Inku puts FSRS under the daily review flow. You grade a card Again, Hard, Good, or Easy, and the app schedules the next review.

Anki includes FSRS in deck options and lets you enable and configure it. It also exposes daily limits, presets, new-card ordering, leeches, burying, desired retention, and many other controls. That control is valuable when you know why you need it. It is extra surface when your main goal is simply to review a prepared Japanese library.

Do not choose between these products because one has FSRS and the other does not. Choose based on content ownership and platform needs.

Audio and card control

Inku bundles pronunciation audio across its main native iPhone library. Some smaller surfaces can use the device’s Japanese voice when a bundled clip is unavailable. The consistency comes from one publisher maintaining the catalog.

Anki supports audio and other media. You can record sound, attach files, use media included with a deck, or configure text-to-speech. Its audio is not inherently worse. Quality depends on the collection and choices you make.

The same pattern applies to cards. Inku lets you save personal cards beside its prepared library, but it does not reproduce Anki’s fields, templates, add-ons, or import system. Anki is the stronger tool when you need several prompt directions, custom layouts, sentence mining, or exact source attribution on every note.

Platform and progress boundaries

Inku’s full prepared catalog lives in its native iPhone app. A separate account-based web app offers a smaller selection of kana, N5 vocabulary, and phrases. The web and iPhone products do not share progress or unlocks. Treat them as separate study surfaces rather than one synchronized library.

Anki is the safer choice when Android, desktop review, or cross-device collection sync is required. The desktop apps are free, AnkiDroid is free, and the official AnkiMobile iPhone app is paid. The iPhone price varies by region, so check the current App Store listing rather than relying on an old quoted price.

Who should still choose Anki

Keep or choose Anki when:

• you already have a trusted collection and useful review history;
• sentence mining is central to how you learn;
• your class, job, reading, or listening creates the vocabulary you need;
• you want fields, templates, add-ons, imports, exports, and scheduler control;
• you need Android, desktop, or AnkiWeb; or
• you want one portable archive that can outlast a prepared course.

You can also use both products if the jobs stay separate. Let Inku own prepared Japanese review and Anki own personally mined sentences. Duplicating the same vocabulary creates two schedules and makes it harder to know which queue deserves attention.

A fair one-week test

Try the decision on a small scale. In Inku, start one prepared bundle and keep the new-card count low. Check whether the audio, card depth, and daily pacing fit what you want to study.

In Anki, choose one small relevant deck or create a handful of cards from your own material. Use the standard setup first. Check whether authoring improves your attention or turns into maintenance.

At the end of the week, choose the queue you actually completed and the content you still want to see next month. The SRS workload simulator can show how new cards create later reviews. It is a generic planning model, not either product’s scheduler.

Related reading

• Inku profile
• Anki profile
• Anki alternatives for Japanese learners
• Japanese flashcards on iPhone
• Inku vs WaniKani