iKnow! v5.6.1

DMM.com LLC

• In-app purchases

About this app

Developer Description

iKnow! - Master Japanese and Chinese. Your Personal Language Learning Tool.

iKnow! is a personalized language learning tool based on advanced learning algorithms designed to help you learn faster and more efficiently.

The mobile app is a companion study tool to the iKnow! website (iknow.jp). With this app, you can enjoy the iKnow! experience on your phone or tablet.

Your iKnow! study progress on your Android device is automatically synched to your PC account, so you can study in the way that best matches your needs and lifestyle.

“Japanese, Chinese, and English”

Official courses are offered for studying Japanese, Chinese, and SAT English. The Japanese Core 6000 covers the 6,000 most commonly used words in Japanese, and the Chinese Core 2000 covers the 2,000 most commonly used words in Chinese. All words have sample sentences and audio.

“Spaced rehearsal learning”

iKnow! presents items in a spaced rehearsal pattern optimized for efficient learning. iKnow! calculates an optimal moment to review what you have learned so that you can learn more effectively.

“Guided study”

iKnow! tells you what to study and when. Based on your targets and performance, iKnow! manages your study for you.

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Features:
- Five study applications: iKnow!, Self Check, Rapid Choice, Sentence Trainer and Listening.
- iKnow!: Master words and phrases with our patented learning algorithms.
- Self Check: Quickly self-assess your own knowledge.
- Rapid Choice: Fast-paced quizzing and review.
- Sentence Trainer: Master sentence patterns and constructions.
- Listening: Listen to content on the go. You can slow down and repeat any audio.
- Study progress synched across Android, iOS and PC accounts

What's New

・ Fixes some crashes.
・ Fixes UI not displaying correctly in some tablets.

In-app purchases

$7.49 - $89.99 per item

Version Information

Version: 5.6.1
Downloads: 100K+
Updated on: Dec 17, 2025
Released: Apr 19, 2011
Requires: Android 6.0

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iKnow! - Google Play Rankings

Rank	Country	Category	List	Change
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No ranking data available yet. Rankings are updated daily.

#46 in Top Grossing Education in Japan

#45

Simpler: English learning app

#46

iKnow!

#47

アンパンマンおてつだいできた！子供向けのアプリ・幼児知育

iKnow! users say on Google Play

★★★★★

Steven

I wish I had found this app years ago. I learned Japanese 6000 with another app. But it's almost impossible to understand the context of words. This app makes it so easy with the sentences! And having actual voice actors instead of Google voice is great for learning. The best thing is that the company really listens to their customers. They constantly improve the app and will implement customers suggestions. And they do so quickly and not years later. I feel it's worth every cent I pay!

★★★★

A Google user

This app has been quite helpful for learning Japanese vocabulary! It does a good job of teaching you as much is possible in a small amount of time. My only significant complaint is that it doesnt tell you any details about the word. I wish it more clearly differentiated 一段 (ru) and 五段 (-u) verbs (e.g. 帰る looks 一段 but is actually 五段), and 形容詞 (i-adjectives) from 形容動詞 (na-adjectives) (e.g. 嫌い looks like an 形容詞 but is actually a 形容動詞), as well as marking whether verbs are transitive or intransitive.

★★★

Tim Favro

I've been using iknow for years. I used to love it and even bought a lifetime subscription. But the application became useless as I racked up the vocab but didn't learn complicated kanji. It really doesn't teach them. It just expects you to know. A lot of these kanji Japanese people don't even use. It's a shame it didn't include any furigana or give an option tone down the kanji a bit. I can no longer use the app. As I'm not willing to learn thousands of kanji.

★★

Echo Lorien

App is not free to use, and this is not stated at any point prior to installation or beginning to use it. After your first 5 study sessions, you have to pay either $15 a month or $55 for a year to continue using it. Those prices are expensive, considering there are better-known and completely free alternatives such as Duolingo, Quizlet, etc. I enjoyed using this app and I like its course structure, but it doesn't bring anything to the table that its free competitors do not.

★