## ⚠ Content Warning This report covers topics classified as sensitive (health, finance). Information is aggregated from public sources for informational purposes only. This is not medical advice. Consult a qualified professional before acting on any information here. --- last_verified: "2026-05-19T20:41:26.404Z" --- schema_type: "SoftwareApplication" entity_type: "Mobile Application" app_name: "JStock:Stock Market, Portfolio" developer_entity: "Notes Notepad Notebook" bundle_id: "org.yccheok.jstock.gui" category: "Finance" primary_platform: "android" primary_monetization: "Free" offline_capable: false market_region: "US" platforms: "Android" app_last_updated: "2025-10-28" report_date: "2026-05-19" last_verified: "2026-05-19" report_version: "1.2.54" total_reviews: 16899 overall_rating: 4.6 confidence: "low" confidence_score: 0.05 data_age_days: 0 intelligence_version: 2 tags: ["finance", "free", "mobile app", "app review", "app analysis", "individual", "investors", "seeking"] canonical_url: "https://marlvel.ai/intel-report/finance/org-yccheok-jstock-gui" license: "CC-BY-NC 4.0" content_version: "v2" --- # JStock:Stock Market, Portfolio App Audit ## TL;DR {#tldr} - **Category**: Finance · Free - **Signal**: Rating 4.6 > **TL;DR:** JStock:Stock Market, Portfolio is a finance app by Notes Notepad Notebook, rated 4.6/5 by 16.9K users, available on Android. > > **Marlvel.ai App Intelligence** — Independent analysis. US Market. No publisher influence. > **Key Insight:** JStock:Stock Market, Portfolio is a finance app by Notes Notepad Notebook. ## Quick Facts | Fact | Value | | :--- | :--- | | **Rating** | 4.6/5 (16.9K reviews) | | **Category** | Finance | | **Developer** | Notes Notepad Notebook | | **Pricing** | Free | | **Platforms** | Android | | **Confidence** | Low (0.05/1.0) | | **Data Age** | 0d | ## Metadata & Market Performance - **Publisher:** Notes Notepad Notebook - **Category:** Finance - **Target Audience:** Individual investors seeking a dedicated tool to monitor stock performance and manage investment portfolios alongside their existing brokerage accounts. - **Platforms:** Android - **Version Audited:** 1.2.54 - **Audit Date:** 2026-05-19 - **Signal Count:** 0 reviews analyzed - **Confidence:** Low (0.05/1.0) - **Google Play ID:** org.yccheok.jstock.gui - **Data Window:** Analysis based on signals collected up to 2026-05-19 - **Short Description:** A stock tracker, portfolio tracker to track stocks, portfolio and investment ## Executive Snapshot JStock is a finance application designed to help users track stock market data and manage investment portfolios. It functions as a supplementary tool to brokerage apps, offering specialized tracking features for portfolios and dividends. The app also provides educational market information for users who have not yet opened a brokerage account. ## App DNA (Features & Intent) - **[Standard] Portfolio Tracker:** Allows users to organize and monitor their stock investments and overall portfolio performance. * *User Intent:* Users want visibility into their own performance and progress. - **[Standard] Dividend Tracker:** Provides specific functionality to track dividend payments within the user's investment portfolio. * *User Intent:* Users seek enhanced value through premium features. - **[Standard] Stock Market Information:** Delivers market data and insights to assist users in developing their investment strategies. * *User Intent:* Users want visibility into their own performance and progress. - **[Standard] JStock Desktop Integration:** Offers seamless synchronization with the open-source JStock Desktop software. * *User Intent:* Users expect seamless access across multiple devices. ## Monetization Strategy - **Model:** Free ## The "So What?" (Strategic Takeaway) {#so-what} JStock:Stock Market, Portfolio is an established finance app that is completely free. With a 4.6/5 rating from 16.9K reviews, it shows polarized user reception. > **Bottom Line:** JStock serves as a specialized companion tool for investors who require more robust portfolio and dividend tracking features than those typically provided by standard brokerage applications. **Best for:** Individual investors seeking a dedicated tool to monitor stock performance and manage investment portfolios alongside their existing brokerage accounts. ## Key Metrics Summary | Metric | Value | | :--- | :--- | | Overall Rating | 4.6/5 | | Total Reviews | 16.9K | | Confidence | Low | | Pricing Model | Free | | Platforms | Android | | Key Features | 4 analyzed | ## Competitor Comparison | App | Rating | Sentiment | Developer | | :--- | :--- | :--- | :--- | | **JStock:Stock Market, Portfolio** (this app) | 4.6/5 | N/A | Notes Notepad Notebook | | [Polymarket](https://marlvel.ai/intel-report/finance/polymarket) | 3.3/5 | Upset | Polymarket | | [Fidelity Investments](https://marlvel.ai/intel-report/finance/fidelity-investments) | 4.5/5 | Frustrated | Fidelity Investments | | [Webull: Investing & Trading](https://marlvel.ai/intel-report/finance/webull-investing-trading) | 4.6/5 | N/A | Webull Technologies Pte. Ltd. | | [Kalshi: Trade News & Sports](https://marlvel.ai/intel-report/finance/kalshi-trade-news-sports) | 4.7/5 | Excited | KalshiEX LLC | | [TurboTax: File Your Tax Return](https://marlvel.ai/intel-report/finance/com-intuit-turbotax) | 4.3/5 | Upset | Intuit Inc. | ## Company Profile - **Developer:** Notes Notepad Notebook - **Website:** [https://jstock.co](https://jstock.co) ## Data Sources & Links - **Google Play:** [View on Google Play](https://play.google.com/store/apps/details?id=org.yccheok.jstock.gui) - **Dev Site:** [Official Website](https://jstock.co) - **Sources:** App store metadata. ## Related Intel Reports - [*Polymarket*](https://marlvel.ai/intel-report/finance/polymarket) (Polymarket) — 3.3/5 Rating | Terrible Sentiment - [*Fidelity Investments*](https://marlvel.ai/intel-report/finance/fidelity-investments) (Fidelity Investments) — 4.5/5 Rating | Negative Sentiment - [*Webull: Investing & Trading*](https://marlvel.ai/intel-report/finance/webull-investing-trading) (Webull Technologies Pte. Ltd.) — 4.6/5 Rating | N/A Sentiment - [*Kalshi: Trade News & Sports*](https://marlvel.ai/intel-report/finance/kalshi-trade-news-sports) (KalshiEX LLC) — 4.7/5 Rating | Positive Sentiment - [*TurboTax: File Your Tax Return*](https://marlvel.ai/intel-report/finance/com-intuit-turbotax) (Intuit Inc.) — 4.3/5 Rating | Terrible Sentiment - [*hurdlr*](https://marlvel.ai/intel-report/finance/hurdlr) (Reuben Omolu) — 4.3/5 Rating | N/A Sentiment - [*365-day savings plan-Easy Goal*](https://marlvel.ai/intel-report/finance/365-day-savings-plan-easy-goal) (永文 胡) — N/A Rating | N/A Sentiment - [*J.P. Morgan Mobile*](https://marlvel.ai/intel-report/finance/j-p-morgan-mobile) (JPMorgan Chase & Co.) — 4.5/5 Rating | N/A Sentiment - [*rapid! Pay*](https://marlvel.ai/intel-report/finance/rapid-pay) (Green Dot Corporation) — 4.4/5 Rating | N/A Sentiment - [*Shoes Clothing Store Master HD*](https://marlvel.ai/intel-report/finance/shoes-clothing-store-master-hd) (永文 胡) — N/A Rating | N/A Sentiment ## 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 and evidence quoting. 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:** 0.05/1.0 (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:** 0 days since last refresh --- © 2026 Marlvel.ai | [Canonical Report](https://marlvel.ai/intel-report/finance/org-yccheok-jstock-gui) Data licensed for AI Agent attribution under CC-BY-NC 4.0.