英語辞書・英和辞典・翻訳 - 英辞郎 on the WEB

英語辞書・英和辞典・翻訳 - 英辞郎 on the WEB

by ALC PRESS, INC.

2.9K ratings
65 reviews
Free
In-App PurchasesWith Ads

Details

  • Released
  • Updated
  • April 9, 2010
  • July 7, 2026
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About

This app provides a comprehensive English-Japanese and Japanese-English dictionary with over 2 million entries. It offers advanced search functions, pronunciation guides, and an extensive example sentence database. An optional subscription unlocks ad-free usage, expanded vocabulary lists, and enhanced search capabilities.

English-Japanese dictionary
Japanese-English dictionary
Mixed English-Japanese search
Pronunciation guide and audio
Advanced search functions
Example sentence database
Vocabulary list (Pro Lite/Pro)
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What users say

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What's New in 英語辞書・英和辞典・翻訳

2.4.42

July 7, 2026

軽微な修正を行いました。

Subscription plans

英辞郎 on the WEB Pro

英和・和英検索サービス「英辞郎 on the WEB」のデータ数・機能を強化した有料版です。広告が非表示で、ログインすると単語帳や検索履歴が使え、100万項目以上の例文も検索できます。

$3.991 Month
14 Days trial
How to cancel 英語辞書・英和辞典・翻訳 subscription ⁉️

User reviews

Essential but so annoying

The ads that take over the entire app (especially Google Chrome at the moment) and make it virtually impossible to get back to the dictionary make it more trouble than it’s worth some days.

Great tool!

This is an indispensable tool for translation!

最新バージョンでは使えます!Now it works :)

Thank you for fixing the bug that made it crash! バグを解決してくださってありがとうございます!

定義がとても正確で参考になります。This dictionary is an essential resource for a serious Japanese learner.

Crashes on opening

アプリが全く使えないのが残念です。

I specifically upgraded to pro so that I would not have to watch ads and so that I could support the company. Soon after, it asked me to login, and I couldn't find my password, so I left it alone for awhile. Then the next time I tried to open it, it crashed upon opening, and I haven't been able to use it since. It's a shame, since this is the best JP/EN dictionary out there, as far as I'm concerned.
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Response from developer

アプリをご利用の際にご不便をおかけしておりますこと、深くお詫び申し上げます。 アプリが起動しない不具合につきましては、対応を行った最新バージョン(2.4.33)をリリースいたしました。お手数ですが、アプリのアップデートをお願いいたします。 このたびはご迷惑をおかけしましたこと、重ねてお詫び申し上げます。

広告うざすぎ

一個の単語調べるのに、毎回10秒くらいの広告を見せられ、非常に使い勝手が悪い。単語検索は、スペル違いだとヒットしない。うる覚えや発音しか知らない場合、候補やアシストもない。日本語で検索すると単語のみ表記でその単語の詳細に飛べないのでわざわざ英語で検索し直さなければならず、非常に不便。少なくとも広告がこのまま改善されなければ、間違いなく近いうちに他のサービスに乗り換える。

Developer apps

User experience

🐞

Reported Bugs

3 issues

Frequent crashes and login issues

Bug

Search results not appearing even with stable network

Bug

Inconsistent behavior with furigana display

Bug

Requested Features

3 requests

Camera input for word lookup

Feature

Pronunciation guide with native speaker models

Feature

Integration of related words and better translations

Feature

FAQ

What does this app do?

This app provides a comprehensive online English-Japanese and Japanese-English dictionary service. It allows users to look up words in both directions, offers advanced search functionalities, pronunciation guides with audio, and access to a large database of example sentences.

What are the key features of the free version?

The free version includes an English-Japanese dictionary, a Japanese-English dictionary, and a mixed search function. It also provides pronunciation symbols and audio, along with powerful search options like partial matching and AND/OR searches. It supports dark mode.

What are the benefits of upgrading to '英辞郎 on the WEB Pro Lite' or '英辞郎 on the WEB Pro'?

Upgrading to 'Pro Lite' (free account registration) adds a vocabulary list (up to 100 entries), search history (up to 10 entries), and access to over 200,000 example sentences. 'Pro' (paid subscription) offers an ad-free experience, an expanded vocabulary list (up to 20,000 entries), search history (up to 50 entries), and access to over 1.48 million example sentences.

How much does the paid version cost and how is it billed?

The '英辞郎 on the WEB Pro' is available through in-app purchases with monthly or annual subscription options. Pricing details can be found within the app. The service uses auto-renewing subscriptions billed to your Apple ID, and can be managed in your device's subscription settings.

Is an internet connection required to use the app?

Yes, an internet connection is required to use this app. The dictionary data is not stored locally on your device; it is accessed online.