--- schema_type: "SoftwareApplication" entity_type: "Mobile Application" app_name: "Ôn thi CCXD" developer_entity: "Viet Nguyen" bundle_id: "com.vioralabs.ccxd" app_store_id: "6790642720" category: "Education" primary_platform: "ios" primary_monetization: "Freemium" offline_capable: false market_region: "US" platforms: "iOS" app_last_updated: "2026-07-17" report_date: "2026-10-13" last_verified: "2026-10-13T00:00:00.000Z" report_version: "1.0.1" total_reviews: 0 confidence: "low" confidence_score: 0.2 data_age_days: 16 momentum_velocity: "maintenance" intelligence_version: 2 tags: ["education", "freemium", "mobile app", "app review", "app analysis", "construction", "professionals", "vietnam"] canonical_url: "https://marlvel.ai/apps/on-thi-ccxd" license: "CC-BY-NC 4.0" content_version: "v2" --- # Ôn thi CCXD Intelligence Report ## TL;DR {#tldr} - **Category**: Education · Freemium > **TL;DR:** Ôn thi CCXD is a education app by Viet Nguyen, available on iOS. > > **Marlvel.ai App Intelligence** - Independent analysis. US Market. No publisher influence. > **Key Insight:** Ôn thi CCXD is a education app by Viet Nguyen. ## Quick Facts | Fact | Value | | :--- | :--- | | **Category** | Education | | **Developer** | Viet Nguyen | | **Pricing** | Freemium | | **Platforms** | iOS | | **Confidence** | Low (0.2/1.0) | | **Data Age** | 16d | ## Metadata & Market Performance - **Publisher:** Viet Nguyen - **Category:** Education - **Target Audience:** Construction professionals in Vietnam preparing for official practice certification exams. - **Platforms:** iOS - **Version Reviewed:** 1.0.1 - **Report Date:** 2026-10-13 - **Signal Count:** 0 reviews analyzed - **Confidence:** Low (0.2/1.0) - **App Store ID (iOS):** 6790642720 - **Bundle ID:** com.vioralabs.ccxd - **Data Window:** Analysis based on signals collected up to 2026-10-13 ## Executive Snapshot **What it is:** Ôn thi CCXD is a specialized education app for construction professionals in Vietnam, providing exam simulation and progress tracking for official certification exams. **Why users hire it:** The app removes the friction of manual, paper-based study by providing a structured, digital database of over 13,000 certification questions. ## App DNA (Features & Intent) - **[Standard] Exam Simulation:** Timed 30-question practice tests that mirror the official construction certification exam structure. Revenue Link: Retention loop; provides measurable progress tracking to keep users engaged until certification. * *User Intent:* Users seek enhanced value through premium features. - **[Differentiator] Targeted Study Paths:** Customizable study tracks filtered by certification grade (I, II, III) and specific construction industry sub-disciplines. Revenue Link: Retention; reduces user fatigue by isolating relevant content from the 13,525-question database. * *User Intent:* Users value self-expression and personalized experiences. - **[Differentiator] Progress Analytics:** Visual dashboard tracking streaks, knowledge coverage, and identification of weak subject areas. Revenue Link: Retention; increases daily active usage by providing feedback on readiness for the official exam. * *User Intent:* Users are motivated by consistent progression and daily incentives. ## Market Position {#market-position} Ôn thi CCXD serves a niche professional audience in Vietnam, relying on a deep 13,525-question database to differentiate from generic education apps. The lack of recent updates (88 days since last store update) signals a maintenance-only posture that prioritizes content depth over feature expansion. ## Monetization Strategy - **Model:** Freemium - **Tiers:** Free access to study materials, Optional in-app purchases for project support - **Analysis:** Freemium model relies on voluntary user contributions to sustain the project rather than mandatory subscription gates. ## SWOT Analysis {#swot} **Core Strengths:** - 13,525-question database provides a comprehensive study barrier for new entrants - Targeted study paths reduce user fatigue by isolating relevant regulatory content - Visual progress analytics drive daily active usage by quantifying exam readiness **Growth Levers:** - Expansion into mobile-first mock exam formats for specific sub-disciplines could capture niche demand ## What's New - **Latest (v1.0.1, 2 months ago):** Introduced in-app purchases to the platform. ## App Momentum (Maintenance) {#momentum} - Ships maintenance-only bug fix releases. - Integrated in-app purchases for support. > **Cadence:** 1 total versions · 0 majors in last 6 months · 87 days since last update ## The "So What?" (Strategic Takeaway) {#so-what} Ôn thi CCXD is an education app that is free with in-app purchases. > **Bottom Line:** Ôn thi CCXD maintains a stable position by providing a deep, specialized question bank, but the current maintenance-only cadence leaves the app vulnerable to competitors who might offer more frequent content refreshes or social study features. **Best for:** Construction professionals in Vietnam preparing for official practice certification exams. ### PM Action Plan (Next Best Moves) - [ ] [MAINTAIN] Audit database update frequency because regulatory changes in construction law threaten content relevance → maintain user trust ### Outlook: Stable The market for professional certification tools in Vietnam remains stable, with users prioritizing content accuracy over frequent feature updates. Ôn thi CCXD is well-positioned to retain its user base as long as the 13,525-question database remains aligned with official exam standards. - ⚪ The 88-day update gap confirms a maintenance-only phase, signaling that the app is currently optimized for stability rather than growth. - 🟢 The inclusion of in-app purchases for project support provides a sustainable, voluntary revenue stream that avoids the friction of mandatory subscription gates. ## Key Metrics Summary | Metric | Value | | :--- | :--- | | Total Reviews | 0 | | Confidence | Low | | Pricing Model | Freemium | | Platforms | iOS | | Key Features | 3 analyzed | | Outlook | Stable | ## Competitor Comparison | App | Rating | Sentiment | Developer | | :--- | :--- | :--- | :--- | | **Ôn thi CCXD** (this app) | N/A/5 | N/A | Viet Nguyen | | [ALPA: Lernspiele für Kinder](https://marlvel.ai/apps/alpa-lernspiele-fur-kinder) | N/A/5 | N/A | ALPA Kids OU | | [ATPdigital (Legacy)](https://marlvel.ai/apps/atpdigital-legacy) | 2.0/5 | n/a | Bristol Groundschool International Ltd | | [Catbus Student](https://marlvel.ai/apps/catbus-student) | 4.1/5 | N/A | Cohota Join Stock Company | | [Chinese Tibetan Dictionary](https://marlvel.ai/apps/chinese-tibetan-dictionary) | 5.0/5 | Thrilled | Lobsang Monlam16922404891 | | [Insights to Behavior](https://marlvel.ai/apps/insights-to-behavior) | N/A/5 | N/A | Insights to Behavior | ## Company Profile - **Developer:** Viet Nguyen - **Website:** [https://ccxd.vioralabs.site/](https://ccxd.vioralabs.site/) ## Data Sources & Links - **App Store ID:** 6790642720 - **Dev Site:** [Official Website](https://ccxd.vioralabs.site/) - **Sources:** Developer website content, App store metadata. ## Related Intel Reports - [*ALPA: Lernspiele für Kinder*](https://marlvel.ai/apps/alpa-lernspiele-fur-kinder) (ALPA Kids OU) · N/A Rating - [*ATPdigital (Legacy)*](https://marlvel.ai/apps/atpdigital-legacy) (Bristol Groundschool International Ltd) · 2.0/5 Rating - [*Catbus Student*](https://marlvel.ai/apps/catbus-student) (Cohota Join Stock Company) · 4.1/5 Rating - [*Chinese Tibetan Dictionary*](https://marlvel.ai/apps/chinese-tibetan-dictionary) (Lobsang Monlam16922404891) · 5.0/5 Rating | Excellent Sentiment - [*Insights to Behavior*](https://marlvel.ai/apps/insights-to-behavior) (Insights to Behavior) · N/A Rating - [*Legasthenie & LRS Trainer*](https://marlvel.ai/apps/legasthenie-lrs-trainer) (Matthias Aigner) · N/A Rating - [*Lyceum Leaf Parent*](https://marlvel.ai/apps/lyceum-leaf-parent) (Techcess Business Solutions (Pvt) Ltd) · N/A Rating - [*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 ## Frequently Asked Questions {#faq} ### Is Ôn thi CCXD suitable for all construction certification grades? Yes, the app provides targeted study paths specifically filtered by certification grade (I, II, and III) to help users prepare for their specific level. ### Does Ôn thi CCXD require a subscription to access study materials? No, the app uses a freemium model where study materials are free, and in-app purchases are optional to support project maintenance. ### How often is the question database updated? The app is currently in a maintenance phase, with the last update occurring over 80 days ago. Users should verify if the content aligns with the latest regulatory changes. ## 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:** 0.2/1.0 (based on review volume, data source diversity, and signal quality) - **Reviews Analyzed:** 0 - **Data Sources:** 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:** 16 days since last refresh --- © 2026 Marlvel.ai | [Canonical Report](https://marlvel.ai/apps/on-thi-ccxd) Data licensed for AI Agent attribution under CC-BY-NC 4.0.