Kotobloom｜大学受験のAI英単語帳

Transform the English vocabulary you encountered during your university entrance exams into your own personalized learning material.

Kotobloom is an AI-powered English learning app for university entrance exams that allows you to create and study your own personalized vocabulary list from words you encountered in textbooks, workbooks, past exams, mock tests, and English reading comprehension passages.

Register words from photos, PDFs, CSVs, TXTs, or manual input. AI supplements meanings and example sentences, allowing you to continue vocabulary organization for the Common Test and individual exams, as well as daily review, all within a single app.

【Add words you want to memorize to your vocabulary list instantly】

・Reads text from photos and PDFs and extracts English word candidates.

・Imports multiple words from CSV and TXT files.

・Supports manual input of one word at a time.

・Review and correct candidates before registering them to your vocabulary list.

・Edit the vocabulary list name, learning level, and included words later.

Text recognition of photos and PDFs is performed on your device, and you can review the extracted candidates before registering them.


[AI Generates Learning Content]

* Meaning, pronunciation, and part of speech of English words
* Example sentences in different contexts and their Japanese translations
* Commonly Used Collocations
* Tips for Memorization
* Audio of Words and Example Sentences

Choose a level from CEFR A1 to C2 to create learning materials tailored to your current learning stage and the English level of your target school. You can review the generated content before registration and revise it as needed.

[Understand Usage Scenarios with Example Sentences]

Instead of simply memorizing meanings, review example sentences and collocations together. Learn "in what situations and with which words" to use words within context.

[Detailed Comparison of Similar Words]

The Unlimited plan allows you to compare the differences in meaning, nuances, usage scenarios, and common combinations of synonyms in detail. Recommended for those who want to learn similar words together and develop natural usage.

[Review Based on Learning Results]

Based on your answers, the next review timing and priority for each word will be adjusted. It prioritizes reviewing essential vocabulary over new words, allowing you to dedicate more study time to words you haven't yet mastered.

You can resume your studies from where you left off if you interrupt them. You can also set your daily study amount to suit your own pace.


[Also useful for specialized vocabulary]

This app can be used not only for university entrance exams, but also for organizing English vocabulary encountered in your work or specialized field. It allows you to create a vocabulary list tailored to your work and purpose, addressing industry-specific terminology that is often difficult to find in commercially available vocabulary books, such as IT/engineering, travel/tours, cruises, aviation/pilots, trading companies, and overseas assignments.


[Sync learning data with your Google account]

By linking with your Google account, you can sync your vocabulary lists, learning materials, settings, and learning history to the cloud. You can restore your data even after changing devices or using a different Android device.


【Recommended for those who:】

・Want to compile English vocabulary found in the Common Test, individual exams, and mock tests.

・Want to learn only the words they need, rather than using commercially available vocabulary books.

・Want to learn English vocabulary with example sentences and pronunciation.

・Want to understand the subtle nuances and usage differences of synonyms.

・Want to efficiently review difficult words by prioritizing them.

・Want to create their own vocabulary list from past exam questions and English reading comprehension passages from their target school.

・Want to organize specialized English for fields such as IT, travel, aviation, trading companies, and overseas assignments.

Start with the English words you want to learn now.

With Kotobloom, cultivate a vocabulary list that suits your learning style.

*The content generated by AI may contain errors. Please check important information with reliable dictionaries and materials.

*The number of available materials, example sentences, audio, and synonym comparisons vary depending on the plan.

*Some features require a Google account login and internet connection.