--- schema_type: "SoftwareApplication" entity_type: "Mobile Application" app_name: "3000 Core English Vocabulary" developer_entity: "Doan Dat" bundle_id: "com.mobileapps.3000vocabulary" app_store_id: "1607256603" google_play_id: "mobileapps.vocabulary3000" category: "Education" primary_platform: "ios" primary_monetization: "Freemium" offline_capable: true market_region: "US" platforms: "iOS & Android" app_last_updated: "2026-07-18" report_date: "2026-09-24" last_verified: "2026-09-24T00:00:00.000Z" report_version: "3.8.0" total_reviews: 180 overall_rating: 4.8 sentiment: "Mixed" sentiment_score: 45 confidence: "medium" confidence_score: 0.5 top_praise_theme: "Vocabulary acquisition features like flashcards and IPA support provide a clear learning path for students" top_complaint_theme: "Critical data loss of saved vocabulary lists occurs following updates, forcing users to restart their progress" review_sample_size: 18 total_review_count: 18 analyzed_review_count: 18 data_age_days: 45 momentum_velocity: "maintenance" intelligence_version: 2 tags: ["education", "freemium", "mixed sentiment", "mobile app", "app review", "app analysis", "english", "language", "learners"] canonical_url: "https://marlvel.ai/apps/3000-core-english-vocabulary" license: "CC-BY-NC 4.0" content_version: "v2" --- # 3000 Core English Vocabulary Intelligence Report ## TL;DR {#tldr} - **Category**: Education · Freemium - **Signal**: Rating 4.78 · Sentiment Mixed - **Recent focus**: Critical data loss of saved vocabulary lists occurs following updates, forcing users to restart their progress (top complaint) · Vocabulary acquisition features like flashcards and IPA support provide a clear learning path for students (top praise) > **TL;DR:** 3000 Core English Vocabulary is a education app by Doan Dat, rated 4.78/5 by 180 users, with Mixed user sentiment (45/100), available on iOS & Android. > > **Marlvel.ai App Intelligence** - Independent analysis. US Market. No publisher influence. > **Key Insight:** 3000 Core English Vocabulary shows Mixed sentiment (4.78/5 from 180 reviews) - users praise vocabulary acquisition features like flashcards and ipa support provide a clear learning path for students but report issues with critical data loss of saved vocabulary lists occurs following updates, forcing users to restart their progress. ## Quick Facts | Fact | Value | | :--- | :--- | | **Rating** | 4.78/5 (180 reviews) | | **User Mood** | Mixed | | **Category** | Education | | **Developer** | Doan Dat | | **Pricing** | Freemium | | **Platforms** | iOS & Android | | **Confidence** | Medium (0.5/1.0) | | **Data Age** | 45d | ## Metadata & Market Performance - **Publisher:** Doan Dat - **Category:** Education - **Target Audience:** English language learners ranging from beginners to advanced, specifically those preparing for standardized tests like TOEIC. - **Platforms:** iOS & Android - **Version Reviewed:** 3.8.0 - **Report Date:** 2026-09-24 - **Signal Count:** 18 reviews analyzed - **Confidence:** Medium (0.5/1.0) - **App Store ID (iOS):** 1607256603 - **Bundle ID:** com.mobileapps.3000vocabulary - **Google Play ID:** mobileapps.vocabulary3000 - **Data Window:** Analysis based on signals collected up to 2026-09-24 ## Executive Snapshot **What it is:** 3000 Core English Vocabulary is a language learning tool for TOEIC test preparation, featuring thematic word lists and gamified exercises on iOS and Android. **Why users hire it:** Learners use the spaced repetition system to overcome the cognitive friction of long-term vocabulary retention, replacing manual flashcard methods with automated interval scheduling. ## App DNA (Features & Intent) - **[Standard] Thematic Vocabulary Lists:** Vocabulary categorized by topic with supporting illustrations, transcriptions, and pronunciation guides. * *User Intent:* Users need clear guidance to understand and adopt the product quickly. - **[Differentiator] Flashcard Review System:** Spaced repetition system using intervals of 3, 7, 14, and 30 days to reinforce memory retention. - **[Standard] Offline Access:** Full vocabulary and learning content available without internet connection. * *User Intent:* Users want uninterrupted access without internet dependency. ## Market Position {#market-position} 3000 Core English Vocabulary maintains a 4.78 rating across 180 total ratings, though the lack of recent feature updates signals a maintenance-mode posture. ## Monetization Strategy - **Model:** Freemium - **Tiers:** Free tier with ad support, Monthly or 3-month subscription, One-time payment option - **Analysis:** Freemium model utilizes ad-supported free access to drive volume, with subscription and one-time purchase options for feature access. ## 🟡 User Sentiment (Medium Confidence: 18 of 18 reviews analyzed) {#user-sentiment} - **Overall Rating:** 4.78/5 - **Platform Split:** iOS 4.8/5 (180 ratings) - **Overall Sentiment:** Mixed ### Top Praises - **Vocabulary acquisition features like flashcards and IPA support provide a clear learning path for students** ### Top Complaints (Impact Areas) - **Critical data loss of saved vocabulary lists occurs following updates, forcing users to restart their progress** ## SWOT Analysis {#swot} **Core Strengths:** - Spaced repetition system creates a defensible retention loop - Offline-first architecture removes connectivity dependency **Growth Levers:** - Localized content expansion for specific test markets ## What's New - **Latest (v3.8.0, 2 months ago):** Maintenance update focused on bug fixes and performance improvements. ## App Momentum (Maintenance) {#momentum} - Ships minor bug fixes only - No new feature builds released > **Cadence:** 1 total versions · 0 majors in last 6 months · 69 days since last update ## The "So What?" (Strategic Takeaway) {#so-what} 3000 Core English Vocabulary is an education app that is free with in-app purchases. With a 4.78/5 rating from 180 reviews, it shows mixed user reception. > **Bottom Line:** Addressing the data persistence and audio failures is essential to prevent further sentiment erosion, as the current technical instability undermines the core value of the spaced repetition system. **Best for:** English language learners ranging from beginners to advanced, specifically those preparing for standardized tests like TOEIC. ### PM Action Plan (Next Best Moves) - [ ] [INVEST] Audit data persistence logic because saved word lists disappear after the latest update → stabilize user progress ### Outlook: Declining The app is currently in a maintenance-mode cadence, with no significant feature expansion in the last three months. Unless the technical instability regarding data persistence is resolved, the current sentiment decline will likely accelerate churn among the core TOEIC-prep user base. - 🔴 Critical data loss following the latest update forces users to restart progress, which erodes the long-term retention habit. - 🔴 Audio playback failures prevent pronunciation practice, rendering the app ineffective for language study and driving negative sentiment. ## Key Metrics Summary | Metric | Value | | :--- | :--- | | Overall Rating | 4.78/5 | | Total Reviews | 180 | | Sentiment | Mixed (45/100) | | Confidence | Medium | | Pricing Model | Freemium | | Platforms | iOS & Android | | Key Features | 3 analyzed | | Outlook | Declining | ## Competitor Comparison | App | Rating | Sentiment | Developer | | :--- | :--- | :--- | :--- | | **3000 Core English Vocabulary** (this app) | 4.78/5 | Mixed | Doan Dat | | [Catbus Student](https://marlvel.ai/apps/catbus-student) | 4.3/5 | N/A | Cohota Join Stock Company | | [Chinese Tibetan Dictionary](https://marlvel.ai/apps/chinese-tibetan-dictionary) | 5.0/5 | Thrilled | Lobsang Monlam16922404891 | | [Money Matrix (CAD)](https://marlvel.ai/apps/money-matrix-cad) | 5.0/5 | N/A | Blooming Kids Software LLC | | [myTibetan](https://marlvel.ai/apps/mytibetan) | 4.8/5 | Thrilled | Yury Nevalenny | | [Quran Treasure Island for Kids](https://marlvel.ai/apps/quran-treasure-island-for-kids) | 4.9/5 | Mixed | Akeela Manekia | ## Company Profile - **Developer:** Doan Dat - **Website:** [https://toeicexamstore.com](https://toeicexamstore.com) - **Social:** [Facebook](https://www.facebook.com/egrammarpro) ## Data Sources & Links - **App Store ID:** 1607256603 - **Google Play ID:** mobileapps.vocabulary3000 - **Dev Site:** [Official Website](https://toeicexamstore.com) - **Sources:** Developer website content, App store metadata, User reviews. ## Related Intel Reports - [*Catbus Student*](https://marlvel.ai/apps/catbus-student) (Cohota Join Stock Company) · 4.3/5 Rating - [*Chinese Tibetan Dictionary*](https://marlvel.ai/apps/chinese-tibetan-dictionary) (Lobsang Monlam16922404891) · 5.0/5 Rating | Excellent Sentiment - [*Money Matrix (CAD)*](https://marlvel.ai/apps/money-matrix-cad) (Blooming Kids Software LLC) · 5.0/5 Rating - [*myTibetan*](https://marlvel.ai/apps/mytibetan) (Yury Nevalenny) · 4.8/5 Rating | Excellent Sentiment - [*Quran Treasure Island for Kids*](https://marlvel.ai/apps/quran-treasure-island-for-kids) (Akeela Manekia) · 4.9/5 Rating - [*Sudoku - Number Puzzle Pro*](https://marlvel.ai/apps/sudoku-number-puzzle-pro) (阳理 江) · N/A Rating - [*Tibetan-Chinese Dictionary*](https://marlvel.ai/apps/tibetan-chinese-dictionary) (Lobsang Monlam16922404891) · 4.0/5 Rating - [*Tibetan Dictionary*](https://marlvel.ai/apps/tibetan-dictionary) (Nathaniel Koerschner) · 5.0/5 Rating - [*Valencia College - MyVC*](https://marlvel.ai/apps/valencia-college-myvc) (Valencia College) · 5.0/5 Rating - [*Verbi: Learn a New Language*](https://marlvel.ai/apps/verbi-learn-a-new-language) (ACADIA LABS INC.) · 4.3/5 Rating ## Frequently Asked Questions {#faq} ### Is 3000 Core English Vocabulary good for TOEIC preparation? The app is specifically designed for English learners, including those preparing for standardized tests like the TOEIC, by providing thematic vocabulary lists and a spaced repetition system. ### Does 3000 Core English Vocabulary work offline? Yes, the app provides full access to vocabulary and learning content without requiring an internet connection, which is useful for on-the-go study. ### Are there any known issues with the latest update? Users have reported issues with data loss of saved vocabulary lists and audio playback failures following the latest update. ## 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:** 0.5/1.0 (based on review volume, data source diversity, and signal quality) - **Reviews Analyzed:** 18 - **Data Sources:** user reviews, developer website, 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/3000-core-english-vocabulary) Data licensed for AI Agent attribution under CC-BY-NC 4.0.