--- schema_type: "SoftwareApplication" entity_type: "Mobile Application" app_name: "Đố Vui - Kho Tàng Văn Học Dân Gian VN" developer_entity: "Tran Thi Thanh Huyen" bundle_id: "com.hnvnsoft.DoVui" app_store_id: "1046338922" category: "Education" primary_platform: "ios" primary_monetization: "Free" offline_capable: false market_region: "US" platforms: "iOS" app_last_updated: "2017-03-29" report_date: "2026-08-29" last_verified: "2026-08-29T00:00:00.000Z" report_version: "1.1" total_reviews: 1 overall_rating: 3 confidence: "low" confidence_score: 0 data_age_days: 33 momentum_velocity: "zombie" intelligence_version: 3 tags: ["education", "free", "mobile app", "app review", "app analysis", "vietnamese", "speakers", "interested"] canonical_url: "https://marlvel.ai/apps/o-vui-kho-tang-van-hoc-dan-gian-vn" license: "CC-BY-NC 4.0" content_version: "v2" --- # Đố Vui - Kho Tàng Văn Học Dân Gian VN Intelligence Report ## TL;DR {#tldr} - **Category**: Education · Free - **Signal**: Rating 3 > **TL;DR:** Đố Vui - Kho Tàng Văn Học Dân Gian VN is a education app by Tran Thi Thanh Huyen, rated 3/5 by 1 users, available on iOS. > > **Marlvel.ai App Intelligence** - Independent analysis. US Market. No publisher influence. > **Key Insight:** Đố Vui - Kho Tàng Văn Học Dân Gian VN is a education app by Tran Thi Thanh Huyen. ## Quick Facts | Fact | Value | | :--- | :--- | | **Rating** | 3/5 (1 review) | | **Category** | Education | | **Developer** | Tran Thi Thanh Huyen | | **Pricing** | Free | | **Platforms** | iOS | | **Confidence** | Low (0/1.0) | | **Data Age** | 33d | ## Metadata & Market Performance - **Publisher:** Tran Thi Thanh Huyen - **Category:** Education - **Target Audience:** Vietnamese speakers interested in traditional culture, folk literature, and brain-training games. - **Platforms:** iOS - **Version Reviewed:** 1.1 - **Report Date:** 2026-08-29 - **Signal Count:** 0 reviews analyzed - **Confidence:** Low (0/1.0) - **App Store ID (iOS):** 1046338922 - **Bundle ID:** com.hnvnsoft.DoVui - **Performance Trend:** Stable - **Data Window:** Analysis based on signals collected up to 2026-08-29 ## Executive Snapshot **What it is:** Đố Vui - Kho Tàng Văn Học Dân Gian VN is a static trivia app for iOS that provides a collection of traditional Vietnamese folk riddles and brain teasers. **Why users hire it:** The app serves as a digital archive for users seeking traditional cultural content, removing the need for physical riddle books or manual search. ## App DNA (Features & Intent) - **[Standard] Folk Riddle Library:** A collection of traditional Vietnamese folk riddles and brain teasers. * *User Intent:* Users expect intelligent, adaptive experiences that learn from their behavior. - **[Standard] Multi-level Difficulty:** A progression system offering puzzles of varying complexity. * *User Intent:* Users seek enhanced value through premium features. ## Market Position {#market-position} Đố Vui - Kho Tàng Văn Học Dân Gian VN maintains a legacy presence in the Education category with a 3-star rating based on a single review. The absence of updates since 2017 indicates a lack of competitive intent in the current market. ## Monetization Strategy - **Model:** Free - **Tiers:** Free - **Analysis:** The app operates as a free, ad-supported utility with no visible in-app purchase or subscription gates. ## SWOT Analysis {#swot} **Core Strengths:** - Traditional folk riddle library provides a niche cultural focus **Growth Levers:** - Content refresh could capture interest in traditional cultural education tools ## Recent Changes (v2 → v3) {#recent-changes} The app's competitive profile shifted from a failed product narrative to a legacy archive status, supported by the inclusion of a 3-star rating metric. No functional updates occurred, maintaining the nine-year development freeze. **Overall trend**: Stable **Compared at**: 2026-08-29 ### High-impact changes - **[Shifted] Market Position Clarity** (positioning) ### Medium-impact changes - **[Shifted] SWOT Analysis Refinement** (swot) - **[Shifted] Contrarian Take Pivot** (positioning) ## What's New - **Latest (v1.1, 9 years ago):** Updated UI and prepared for watchOS 27 compatibility. ## App Momentum (Zombie) {#momentum} - No updates since March 2017. - Dormant development cycle for nine years. > **Cadence:** 1 total versions · 0 majors in last 6 months · 3439 days since last update ## The "So What?" (Strategic Takeaway) {#so-what} Đố Vui - Kho Tàng Văn Học Dân Gian VN is an education app that is completely free. It holds a 3/5 rating from 1 review. > **Bottom Line:** The app functions as a static archive with no active development, making it a legacy asset rather than a growth product. Sunset the title to clear the developer account for modern, maintainable projects. **Best for:** Vietnamese speakers interested in traditional culture, folk literature, and brain-training games. ### PM Action Plan (Next Best Moves) - [ ] [SUNSET] Sunset the app because the nine-year development gap makes technical maintenance unviable → reallocate resources to new projects ### Outlook: Declining The education-game market is consolidating around titles with frequent content updates and social features. Given the lack of activity since 2017, the app will continue to lose relevance, making a sunset the most logical path for the developer. - 🔴 The nine-year development hiatus prevents the app from competing with modern, interactive trivia titles, leading to inevitable long-term user attrition. ## Key Metrics Summary | Metric | Value | | :--- | :--- | | Overall Rating | 3/5 | | Total Reviews | 1 | | Confidence | Low | | Pricing Model | Free | | Platforms | iOS | | Key Features | 2 analyzed | | Trend | Stable | | Outlook | Declining | ## Competitor Comparison | App | Rating | Sentiment | Developer | | :--- | :--- | :--- | :--- | | **Đố Vui - Kho Tàng Văn Học Dân Gian VN** (this app) | 3/5 | N/A | Tran Thi Thanh Huyen | | [AlgoApp - Flashcards](https://marlvel.ai/apps/algoapp-flashcards) | 4.5/5 | n/a | AlgoApp Inc | | [Elevate - Brain Training Games](https://marlvel.ai/apps/elevate-brain-training-games) | 4.7/5 | n/a | The Mind Company | | [Flashcards Deluxe](https://marlvel.ai/apps/flashcards-deluxe) | 4.5/5 | N/A | OrangeOrApple.com | | [Flash Cards Flashcards Maker](https://marlvel.ai/apps/flash-cards-flashcards-maker) | 4.0/5 | Mixed | Infinite Wave Media, LLC | | [Flashcards maker - AI generate](https://marlvel.ai/apps/flashcards-maker-ai-generate) | 4.1/5 | Mixed | Teleprompter LLC | ## Company Profile - **Developer:** Tran Thi Thanh Huyen ## Data Sources & Links - **App Store:** [View on Apple Store](https://apps.apple.com/us/app/%C4%91%E1%BB%91-vui-kho-t%C3%A0ng-v%C4%83n-h%E1%BB%8Dc-d%C3%A2n-gian-vn/id1046338922?uo=4) - **Sources:** App store metadata. ## Related Intel Reports - [*AlgoApp - Flashcards*](https://marlvel.ai/apps/algoapp-flashcards) (AlgoApp Inc) · 4.5/5 Rating - [*Elevate - Brain Training Games*](https://marlvel.ai/apps/elevate-brain-training-games) (The Mind Company) · 4.7/5 Rating - [*Flashcards Deluxe*](https://marlvel.ai/apps/flashcards-deluxe) (OrangeOrApple.com) · 4.5/5 Rating - [*Flash Cards Flashcards Maker*](https://marlvel.ai/apps/flash-cards-flashcards-maker) (Infinite Wave Media, LLC) · 4.0/5 Rating - [*Flashcards maker - AI generate*](https://marlvel.ai/apps/flashcards-maker-ai-generate) (Teleprompter LLC) · 4.1/5 Rating - [*Impulse - Brain Training*](https://marlvel.ai/apps/impulse-brain-training) (GMRD Apps Limited) · 4.6/5 Rating - [*Peak - Brain Training*](https://marlvel.ai/apps/peak-brain-training) (Synaptic Labs) · 4.7/5 Rating - [*자주 틀리는 우리말*](https://marlvel.ai/apps/app--424) (DaolSoft, Co., Ltd.) · N/A Rating - [*달공부 - 한 달 공부 다이어리 + 루틴/공부 타이머*](https://marlvel.ai/apps/azlabs-dalstudy) (SuWon Choi) · N/A Rating - [*타요콘 - 타요 아바타 놀이동화*](https://marlvel.ai/apps/com-kigle-project-tayocon) (KIGLE) · 3.1/5 Rating ## Frequently Asked Questions {#faq} ### Is Đố Vui - Kho Tàng Văn Học Dân Gian VN still being updated? No, the app has not received any updates or content additions since March 2017. ### Is this app free to use? Yes, the app is free and ad-supported, with no in-app purchases or subscription tiers. ### What kind of riddles does the app contain? The app contains a collection of traditional Vietnamese folk riddles and intellectual brain teasers across multiple difficulty levels. ## 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:** 0/1.0 (based on review volume, data source diversity, and signal quality) - **Reviews Analyzed:** 0 - **Data Sources:** 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:** 33 days since last refresh --- © 2026 Marlvel.ai | [Canonical Report](https://marlvel.ai/apps/o-vui-kho-tang-van-hoc-dan-gian-vn) Data licensed for AI Agent attribution under CC-BY-NC 4.0.