TANGORU - 使い分けと減点トラップの英単語帳

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About this app

■ Launch Celebration Campaign Underway
All features are currently available for free. Those who open the app during the campaign period will be able to use all features without additional payment even after the campaign ends.

TANGORU is an English vocabulary learning app for junior and senior high school students that complements paper vocabulary notebooks. While it's a comprehensive vocabulary list arranged alphabetically, key words already have "professional annotations"—nuance notes (📝) and penalty traps (⚠️)—added in the margins.

■ This app is for:
* Junior and senior high school students preparing for high school entrance exams and university entrance exams (Common Test to National/Public University Second Stage and Difficult Private Universities)
* Those who want to prepare for the Eiken (Level 3 to Pre-1)
* Those who want to avoid losing points due to incorrect usage despite knowing the meaning

■ Features
【1】Start Learning Immediately
No complicated settings required. You can use the vocabulary list immediately after opening the app. With an "information gradient" design that keeps common words simple and emphasizes only the words that make a difference, you won't get buried in unnecessary information.

[2] Over 230 "Usage Differentiation Groups"
Imply and infer, sensible and sensitive, salary/wage/income… Words with similar meanings that are easily confused are grouped together for comparison. Includes definitive explanations of "when to use which" and pictograms to help you grasp the meaning.

[3] Avoiding Point Deduction Traps
"Discuss about" is a point deduction!," "To is unnecessary with approach"—these kinds of usage traps that actually make a difference in exams are directly displayed on the word cards. Prevent losing points in English composition and translation.

[4] Reinforce with Quizzes, Weaknesses Automatically Collected
Check "usage differentiation" and "translation" with over 1,700 quizzes. Incorrectly answered words are automatically collected in "My Weakness Dictionary," allowing you to focus on reviewing only your weak points. You automatically graduate after answering correctly consecutively. [5] Your Personalized Vocabulary List
The "My Vocabulary List" function allows you to save conditions based on exam tags (Eiken level, Common Test, etc.) and question attributes. Filtering according to your purpose can be accessed with a single tap.

[6] Offline Use
All content is saved to your device. All functions are available from the first launch, even in locations without an internet connection. Pronunciation supports text-to-speech (TTS) on your device.

■ Contents
・Approximately 3,100 words (3 categories: High School Entrance Exam/Junior High Basic / University Entrance Exam/Standard / University Entrance Exam/Advanced)
・Group explanations and pictograms for usage, confusion, and grammar
・Over 1,700 quizzes
*The vocabulary is based on the CEFR-J Wordlist.

■ Pricing
The basic vocabulary list (meaning, example sentences, and pronunciation of all words) is available for free. In-depth explanations, comparisons, and quizzes are available for free for initial letters A-C, and all content is unlocked with in-app purchases (one-time payment). There is no subscription service.

* Users who opened the app during the launch campaign period will be able to use all features without charge even after the campaign ends.

■ Transferring Learning Data
You can transfer your learning history when changing devices by linking your Google account (optional).

Please send your comments and requests through the "Contact Us" section within the app.
A vocabulary list arranged alphabetically with "professional annotations." An English vocabulary app for middle and high school students that shows you how to differentiate between words and avoids common mistakes right from the start.
Updated on
Sep 13, 2026

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
  • No data shared with third parties
    Learn more about how developers declare sharing
  • This app may collect these data types
    Personal info, Financial info and 2 others
  • Data is encrypted in transit
  • You can request that data be deleted
Content rating
Everyone
In-App Purchases
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App support

About the developer
NOS K.K.
ngk@nos-co.jp
2-2-15, HAMAMATSUCHO MINATO-KU, 東京都 105-0013 Japan
+81 80-2959-0823

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