AiOne英語辞書 Android
AiOne英語辞書 is #41 in Education Free on Google Play in Japan and charting in 1 of 15 countries we track.
Updated 27 Sep 2026 · rankings refresh through the day
DeveloperLearning Science, Inc.
CategoryEducation
PriceFree
Released–
Installs1k+
Rating–
Updated–
Content ratingEveryone
Best rank now
#41
Education FreeMeasured
AiOne英語辞書 on Google Play
App details
App ID
jp.learningscience.aionedict
Publisher
Learning Science, Inc.
Content rating
Everyone
AiOne英語辞書 downloads
Worldwide, per day, and installs to date. The band is open; the exact number is free with an account.
How this is calculated
Google Play shows an exact lifetime install count; downloads per day are its daily change (measured). When Play hasn't refreshed the count, they come from new ratings and Top Free chart positions. Confidence is the chance the real number is within half to double ours.
Active users
All platforms, worldwide. Free with an account.
Stickiness (DAU / MAU)
how many monthly users open it on a given day
How this is calculated
Monthly users come from lifetime installs across every store, fitted on monthly active user figures companies publish; daily users = monthly × the typical daily/monthly ratio for the category. Confidence is the chance the real number is within half to double ours.
Where it ranks on Google Play
Every top 200 chart it appears in across 15 countries.
| Country | Charts | Rank |
|---|---|---|
| Japan | EducationFree | #41 |
Apps near AiOne英語辞書 on the chart
Education Free, around #41.
About AiOne英語辞書
This is a full-featured English dictionary that is completely free and ad-free.
It includes over 2 million English-English-Japanese headwords, over 600,000 Japanese-English headwords, and over 2.2 million example sentences.
It features an unlimited vocabulary list and a genre-based list of frequently used words.
For business or exam preparation, this one English dictionary is all you need.
[Features of AiOne English Dictionary]
1. Uses the world's largest open dictionary data
- Uses an open-source dictionary compiled and checked by native speakers worldwide, allowing you to learn the latest terminology definitions.
- Includes over 2 million English-English-Japanese headwords, over 600,000 Japanese-English headwords, and over 2.2 million example sentences.
- We plan to regularly add new words and example sentences.
2. Understand nuances with English-English-Japanese
- Switch between English-Japanese, English-English, and English-English-Japanese, allowing you to accurately grasp subtle differences in meaning that cannot be conveyed through Japanese translation alone.
3. Acquire practical, real-world English expressions
- Includes a wealth of idiomatic expressions and examples extracted from a wide range of corpora, from business to sports.
4. Frequently Used Word Lists for Busy Business Professionals and Exam Takers
- Includes rankings of frequently used words in 6 fields, including those for exam preparation.
- Aim for efficient vocabulary improvement by checking the list of approximately 15,000 frequently used words.
5. Completely Free, No Ads
- All features are free and ad-free.
- There are no limits on the number of words you can register in your vocabulary list.
* User account registration (free) is required to use all features.
* We may send advertisements for our products via email, etc.
[Terms of Use and Privacy Policy]
Terms of Use: https://aione.learningscience.jp/terms
Privacy Policy: https://aione.learningscience.jp/privacy
* Please check the above Terms of Use and Privacy Policy before use.
* By installing, you are deemed to have agreed to all of the above.
It includes over 2 million English-English-Japanese headwords, over 600,000 Japanese-English headwords, and over 2.2 million example sentences.
It features an unlimited vocabulary list and a genre-based list of frequently used words.
For business or exam preparation, this one English dictionary is all you need.
[Features of AiOne English Dictionary]
1. Uses the world's largest open dictionary data
- Uses an open-source dictionary compiled and checked by native speakers worldwide, allowing you to learn the latest terminology definitions.
- Includes over 2 million English-English-Japanese headwords, over 600,000 Japanese-English headwords, and over 2.2 million example sentences.
- We plan to regularly add new words and example sentences.
2. Understand nuances with English-English-Japanese
- Switch between English-Japanese, English-English, and English-English-Japanese, allowing you to accurately grasp subtle differences in meaning that cannot be conveyed through Japanese translation alone.
3. Acquire practical, real-world English expressions
- Includes a wealth of idiomatic expressions and examples extracted from a wide range of corpora, from business to sports.
4. Frequently Used Word Lists for Busy Business Professionals and Exam Takers
- Includes rankings of frequently used words in 6 fields, including those for exam preparation.
- Aim for efficient vocabulary improvement by checking the list of approximately 15,000 frequently used words.
5. Completely Free, No Ads
- All features are free and ad-free.
- There are no limits on the number of words you can register in your vocabulary list.
* User account registration (free) is required to use all features.
* We may send advertisements for our products via email, etc.
[Terms of Use and Privacy Policy]
Terms of Use: https://aione.learningscience.jp/terms
Privacy Policy: https://aione.learningscience.jp/privacy
* Please check the above Terms of Use and Privacy Policy before use.
* By installing, you are deemed to have agreed to all of the above.