iKnow!
iKnow! Summary
iKnow! is a with in-app purchases Android app in Education by DMM.com LLC. Released in Apr 2011 (14 years ago). It has about 472.3K+ installs and 3.6K ratings with a 4.35★ (good) average. Based on AppGoblin estimates, it reaches roughly 586 monthly active users and generates around $<10K monthly revenue (100% IAP / 0% ads). Store metadata: updated Dec 17, 2025, version 50237.
Recent activity: 39 installs this week (312 over 4 weeks) showing below average growth View trends →
Data tracking: SDKs and third-party integrations were last analyzed on Mar 8, 2026. The app's network data flows (API traffic to/from the app and its SDKs) were last crawled on Oct 21, 2025.
Store info: Last updated on Google Play on Dec 17, 2025 (version 50237).
iKnow! was last scanned for SDKs 2026-03-08. Below is the overview of third party companies detected in the app. The full list of raw SDKs, app permissions and unknown SDKs is available here.
Square
Kotlin
Google
Firebase4.35★
Ratings: 3.6K
Screenshots
App 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