--- schema_type: "SoftwareApplication" entity_type: "Mobile Application" app_name: "英語辞書・英和辞典・翻訳 - 英辞郎 on the WEB" developer_entity: "ALC PRESS INC." bundle_id: "jp.co.alc.eow" app_store_id: "365874160" category: "Books & Reference" primary_platform: "ios" primary_monetization: "Freemium" offline_capable: false market_region: "US" platforms: "iOS & Android" app_last_updated: "2026-08-19" report_date: "2026-09-22" last_verified: "2026-09-22T00:00:00.000Z" report_version: "2.4.44" total_reviews: 7287 overall_rating: 4.6 sentiment: "Frustrated" sentiment_score: 35 confidence: "high" confidence_score: 0.8 top_praise_theme: "Extensive example sentences and accurate definitions provide high value for serious English language learners" top_complaint_theme: "Invasive full-screen advertisements interrupt the search flow and degrade the user experience for free tier" review_sample_size: 78 total_review_count: 78 analyzed_review_count: 61 data_age_days: 45 momentum_velocity: "maintenance" intelligence_version: 2 tags: ["books & reference", "freemium", "frustrated sentiment", "mobile app", "app review", "app analysis", "english", "learners,", "translators,"] canonical_url: "https://marlvel.ai/apps/on-the-web" license: "CC-BY-NC 4.0" content_version: "v2" --- # 英語辞書・英和辞典・翻訳 - 英辞郎 on the WEB Intelligence Report ## TL;DR {#tldr} - **Category**: Books & Reference · Freemium - **Signal**: Rating 4.56 · Sentiment Frustrated - **Recent focus**: Invasive full-screen advertisements interrupt the search flow and degrade the user experience for free tier (top complaint) · Extensive example sentences and accurate definitions provide high value for serious English language learners (top praise) > **TL;DR:** 英語辞書・英和辞典・翻訳 - 英辞郎 on the WEB is a books & reference app by ALC PRESS INC., rated 4.56/5 by 7.3K users, with Frustrated user sentiment (35/100), available on iOS & Android. > > **Marlvel.ai App Intelligence** - Independent analysis. US Market. No publisher influence. > **Key Insight:** 英語辞書・英和辞典・翻訳 - 英辞郎 on the WEB faces Frustrated user sentiment (4.56/5 from 7.3K reviews), with users reporting invasive full-screen advertisements interrupt the search flow and degrade the user experience for free tier as the primary concern. ## Quick Facts | Fact | Value | | :--- | :--- | | **Rating** | 4.56/5 (7.3K reviews) | | **User Mood** | Frustrated | | **Category** | Books & Reference | | **Developer** | ALC PRESS INC. | | **Pricing** | Freemium | | **Platforms** | iOS & Android | | **Confidence** | High (0.8/1.0) | | **Data Age** | 45d | ## Metadata & Market Performance - **Publisher:** ALC PRESS INC. - **Category:** Books & Reference - **Target Audience:** English learners, translators, and business professionals requiring high-frequency access to specialized vocabulary and example sentences. - **Platforms:** iOS & Android - **Version Reviewed:** 2.4.43 - **Report Date:** 2026-09-22 - **Signal Count:** 78 reviews analyzed - **Confidence:** High (0.8/1.0) - **App Store ID (iOS):** 365874160 - **Bundle ID:** jp.co.alc.eow - **Google Play ID:** jp.co.alc.eow - **Data Window:** Analysis based on signals collected up to 2026-09-22 - **Short Description:** An English-Japanese/Japanese-English dictionary app that is useful for searching English words and phrases ## Executive Snapshot **What it is:** Eijiro on the WEB is an English-Japanese dictionary and translation app for mobile and PC, providing extensive vocabulary and example sentence databases. **Why users hire it:** 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. ## App DNA (Features & Intent) - **[Standard] Multi-mode Search:** 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. * *User Intent:* Users are motivated by consistent progression and daily incentives. - **[Differentiator] Vocabulary List Synchronization:** 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. * *User Intent:* Users expect seamless access across multiple devices. - **[Differentiator] Example Sentence Database:** 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. * *User Intent:* Users seek enhanced value through premium features. ## Market Position {#market-position} 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. ## Monetization Strategy - **Model:** Freemium - **Tiers:** Free tier with account registration (Pro Lite), Premium tier (Pro) at 550 yen/month or 5,500 yen/year - **Analysis:** Freemium model uses content volume (example sentences) and ad removal as primary gates to convert free users to a 550 yen/month subscription. ## 🔴 User Sentiment (High Confidence: 61 of 78 reviews analyzed) {#user-sentiment} - **Overall Rating:** 4.56/5 - **Platform Split:** iOS 4.7/5 (2.9K ratings) | Android 4.5/5 (4.4K ratings) - **Overall Sentiment:** Frustrated - **Note:** The 4.56/5 store rating reflects cumulative history, while the Frustrated sentiment reflects recent user reviews analyzed by our AI pipeline. ### Top Praises - **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** ### Top Complaints (Impact Areas) - **Invasive full-screen advertisements interrupt the search flow and degrade the user experience for free tier** ## SWOT Analysis {#swot} **Core Strengths:** - 2.37 million headword database functions as a defensible barrier for serious learners - Cross-platform vocabulary synchronization creates high switching costs **Growth Levers:** - Localized dark mode implementation would address top-requested usability friction - Camera-based OCR input would simplify lookups for physical book users ## What's New - **Latest (v2.4.43, 1 months ago):** Minor bug fixes and stability improvements. ## App Momentum (Maintenance) {#momentum} - Ships minor bug fixes monthly. - Maintains stable 4.4-star rating. > **Cadence:** 2 total versions · 0 majors in last 6 months · 34 days since last update · 13 days avg between updates ## The "So What?" (Strategic Takeaway) {#so-what} 英語辞書・英和辞典・翻訳 - 英辞郎 on the WEB is a books & reference app that is free with in-app purchases. With a 4.56/5 rating from 7.3K reviews, it draws more critical themes in recent reviews than its store average suggests. > **Bottom 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. **Best for:** English learners, translators, and business professionals requiring high-frequency access to specialized vocabulary and example sentences. ### PM Action Plan (Next Best Moves) - [ ] [MAINTAIN] Audit authentication flow because login glitches are the #1 frustration for paid subscribers → reduce churn of high-value users. ### Outlook: Mixed 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. ## Key Metrics Summary | Metric | Value | | :--- | :--- | | Overall Rating | 4.56/5 | | Total Reviews | 7.3K | | Sentiment | Frustrated (35/100) | | Confidence | High | | Pricing Model | Freemium | | Platforms | iOS & Android | | Key Features | 3 analyzed | | Outlook | Mixed | ## Competitor Comparison | App | Rating | Sentiment | Developer | | :--- | :--- | :--- | :--- | | **英語辞書・英和辞典・翻訳 - 英辞郎 on the WEB** (this app) | 4.56/5 | Frustrated | ALC PRESS INC. | | [디리토](https://marlvel.ai/apps/kr-co-diritto) | 4.4/5 | N/A | RIDI Corporation | | [하이북 (레드) - 무협, 판타지 소설, 웹툰, 만화](https://marlvel.ai/apps/kr-co-hibook-a00700) | 3.6/5 | N/A | hibook | | [목회와 신학](https://marlvel.ai/apps/app--977) | 3.0/5 | N/A | Duranno | | [법퍼링 법전 - 변호사가 만든 법전, 버퍼링 법전](https://marlvel.ai/apps/net-papership-beoppering-beoppering) | 4.9/5 | N/A | Jongwoo, Bai | | [ኡሱሉ ሰላሳ ኪታብ](https://marlvel.ai/apps/com-hussenapp-usulusman) | 5.0/5 | N/A | Hussen Oumer Amid | ## Company Profile - **Developer:** ALC PRESS INC. - **Website:** [https://www.alc.co.jp/](https://www.alc.co.jp/) ## Data Sources & Links - **App Store ID:** 365874160 - **Google Play ID:** jp.co.alc.eow - **Dev Site:** [Official Website](https://www.alc.co.jp/) - **Sources:** Developer website content, About us / company information, App store metadata, User reviews. ## Related Intel Reports - [*디리토*](https://marlvel.ai/apps/kr-co-diritto) (RIDI Corporation) · 4.4/5 Rating - [*하이북 (레드) - 무협, 판타지 소설, 웹툰, 만화*](https://marlvel.ai/apps/kr-co-hibook-a00700) (hibook) · 3.6/5 Rating - [*목회와 신학*](https://marlvel.ai/apps/app--977) (Duranno) · 3.0/5 Rating - [*법퍼링 법전 - 변호사가 만든 법전, 버퍼링 법전*](https://marlvel.ai/apps/net-papership-beoppering-beoppering) (Jongwoo, Bai) · 4.9/5 Rating - [*ኡሱሉ ሰላሳ ኪታብ*](https://marlvel.ai/apps/com-hussenapp-usulusman) (Hussen Oumer Amid) · 5.0/5 Rating - [*አዳኡ ወደዋእ በሽታ እና ፈውሱ*](https://marlvel.ai/apps/com-hussenapp-adauwedewa) (Hussen Oumer Amid) · 4.7/5 Rating - [*원불교 경전법문집*](https://marlvel.ai/apps/kr-or-won-wonbubmoon) (원불교 Wonbuddhism) · 4.6/5 Rating - [*ሸርህ ነዋቂዱል ኢስላም*](https://marlvel.ai/apps/explanation-of-the-new-islamic-book-with-audio-wit) (Hussen Oumer Amid) · N/A Rating - [*두플러스 - 복음을 읽는 새로운 습관*](https://marlvel.ai/apps/app--975) (Duranno) · 4.8/5 Rating - [*현대인의 성경*](https://marlvel.ai/apps/com-biblica-korean) (Biblica, Inc.) · 4.3/5 Rating ## Frequently Asked Questions {#faq} ### Is Eijiro on the WEB suitable for professional translation work? Yes, the app is designed for translators and business professionals, offering over 2.37 million headwords and extensive example sentences to support accurate translation and writing. ### Does the app require an internet connection? Yes, an internet connection is required to use the service as the dictionary data is not included within the app itself. ### Can I sync my vocabulary list with my computer? Yes, the vocabulary list function is synchronized between the mobile app and the PC browser version, allowing for consistent study across devices. ### Are there ads in the free version? Yes, the free version includes advertisements. Users can remove these by subscribing to the Pro version, which also provides access to a larger example sentence database. ## Methodology {#methodology} This report was generated by Marlvel.ai's 5-stage AI intelligence pipeline: 1. **Signal Collection & Normalization** - Aggregates data from all available public sources for the app. Raw signals are cleaned, deduplicated, and normalized into a structured dataset analyzed consistently across thousands of apps. 2. **Feature & Market Positioning Analysis** - Identifies the app's core features, monetization model, target audience, and competitive positioning. Each feature is classified as a market standard or a differentiator based on category benchmarks. 3. **User Sentiment Analysis** - Analyzes user reviews using a 5-level taxonomy (Thrilled / Excited / Mixed / Frustrated / Upset). Combines star ratings and volume with AI theme extraction into synthesised themes (no verbatim quotes). 4. **Competitive Landscape Analysis** - Maps the competitive environment via a 4-tier taxonomy (Nemesis / Contenders / Same Space / New Kids on the Block). Prioritizes same sub-genre over broad category. 5. **Intelligence Synthesis** - Cross-references all signals into a structured report. Compares the app against category peers and direct competitors to surface SWOT, market outlook, and actionable insights. - **Confidence Score:** 0.8/1.0 (based on review volume, data source diversity, and signal quality) - **Reviews Analyzed:** 78 - **Data Sources:** user reviews, developer website, company about page, App Store metadata - **Rating Method:** Weighted average across platforms (iOS & Android), weighted by review count per platform - **Independence:** Fully independent analysis. No publisher sponsorship or editorial influence. - **Report Age:** 45 days since last refresh --- © 2026 Marlvel.ai | [Canonical Report](https://marlvel.ai/apps/on-the-web) Data licensed for AI Agent attribution under CC-BY-NC 4.0.