英語辞書・英和辞典・翻訳 - 英辞郎 on the WEB
By ALC PRESS
Eijiro on the WEB is an English-Japanese dictionary and translation app for mobile and PC, providing extensive vocabulary and example sentence databases.
The App DNA
What makes this app unique?
The app removes the friction of searching for specialized phrases and technical terms by providing a synchronized, cross-platform reference tool that displaces manual dictionary lookups.
For English learners, translators, and business professionals requiring high-frequency access to specialized vocabulary and example sentences.
What does it look like?
Key features
Supports English-Japanese, Japanese-English, and mixed-language queries with exact, partial, AND/OR, and inflection matching. Revenue Link: Core utility drives daily usage and retention.
Saves searched words and phrases to a list that syncs between the mobile app and PC browser version. Revenue Link: Cross-platform data persistence increases switching costs and deepens user investment.
Provides access to over 1.48 million English example sentences for Pro users versus 210,000 for Pro Lite users. Revenue Link: Premium-tier gate (550 yen/month) — scales access to high-value content.
How much does it cost?
Freemium model uses content volume (example sentences) and ad removal as primary gates to convert free users to a 550 yen/month subscription.
Velocity
Maintenance developmentperformanceopaqueShow more...
The app maintains a maintenance-level cadence, with two releases identified in the recent window. Development is currently focused exclusively on minor stability improvements and bug fixes, with no new features or live operations content introduced. The latest release occurred 34 days ago, continuing a pattern of infrequent, non-feature-driven updates. This stable but slow release cycle suggests a focus on long-term support rather than active feature expansion.
Who built it?
ALC PRESS
8 apps tracked · Books & Reference
英語辞書・英和辞典・翻訳 - 英辞郎 on the WEB
booco法人版
英語学習・英単語・TOEIC® 英語リスニングのbooco
ファンタスピーク - 英語学習初心者の英単語/英会話アプリ
ALC NetAcademy Plus
ALCO for DLC
英単語・英語リスニング・TOEIC® 語学学習のboocoUser Sentiment
What do users think recently?
Review voice lately leans frustrated. Users appreciate extensive example sentences and accurate definitions provide high value for serious english language learners and integrated pronunciation audio features help users improve their spoken english and listening comprehension skills, but report invasive full-screen advertisements interrupt the search flow and degrade the user experience for free tier.
How are ratings & reviews evolving?
What users say, by theme
- Extensive example sentences and accurate definitions provide high value for serious English language learners
- Integrated pronunciation audio features help users improve their spoken English and listening comprehension skills
- Cross-platform availability allows users to maintain a consistent dictionary experience across mobile and desktop
- Invasive full-screen advertisements interrupt the search flow and degrade the user experience for free tier
61 of 78 recent reviews analyzed · high confidence · Frustrated overall
Read the full review analysisUnlock 2 more frustration themes and 3 user requests, each backed by review evidence.
Access the full report for freeCompetition
Competitive landscape for 英語辞書・英和辞典・翻訳 - 英辞郎 on the WEB
How's the Books & Reference market?
Eijiro on the WEB holds the #29 Grossing position in the Japanese Books & Reference category. The gap between its utility-driven discovery and the monetization friction of its ad-heavy free tier limits its revenue ceiling.
Read the market outlookThe rivals identified
Unlock the deeper market read.
Access the full report for freeThe Analyst's Read
Key takeaways for 英語辞書・英和辞典・翻訳 - 英辞郎 on the WEB
Where is it heading?
The dictionary market is consolidating around tools that offer seamless, ad-free reference experiences. Eijiro on the WEB's reliance on intrusive ad-monetization for free users leaves it vulnerable to competitors that prioritize session flow, which will likely compress its long-term user retention if authentication and ad-friction issues remain unaddressed.
- Persistent login instability for paid subscribers erodes trust, which directly increases churn among the app's highest-value user segment.
- Invasive full-screen ads in the free tier interrupt the search workflow, driving users toward ad-free competitors.
The SWOT
- 2.37 million headword database functions as a defensible barrier for serious learners
- Cross-platform vocabulary synchronization creates high switching costs
- Localized dark mode implementation would address top-requested usability friction
- Camera-based OCR input would simplify lookups for physical book users
Next best moves
Audit authentication flow because login glitches are the #1 frustration for paid subscribers → reduce churn of high-value users.
+ 1 more prioritized moveThe counter-intuitive read
The high ad-frequency in the free tier is not just a monetization lever…
Read the full takeBottom line
Stabilizing the authentication flow for paid subscribers would address the primary churn driver for the most valuable user segment. Improving the ad-free experience for free users would then unlock better conversion, as the current friction undermines the app's utility-first value proposition.
Unlock 2 critical frictions, 2 market threats, 1 more prioritized move and the analyst’s take.
Access the full report for freeFAQ
Is Eijiro on the WEB suitable for professional translation work?
Does the app require an internet connection?
Can I sync my vocabulary list with my computer?
Are there ads in the free version?
Sources
- [1] Play Store
- [2] App Store reviews
Report last updated