--- schema_type: "SoftwareApplication" entity_type: "Mobile Application" app_name: "ChartEye: Eye Chart" developer_entity: "Jhomar Maravillas" bundle_id: "com.marr.snellenchart" app_store_id: "6792487490" category: "Productivity" primary_platform: "ios" primary_monetization: "Freemium" offline_capable: false market_region: "US" platforms: "iOS" app_last_updated: "2026-09-24" report_date: "2026-09-30" last_verified: "2026-09-30T00:00:00.000Z" report_version: "1.0.3" total_reviews: 0 confidence: "low" confidence_score: 0.2 data_age_days: 0 momentum_velocity: "maintenance" intelligence_version: 2 tags: ["productivity", "freemium", "mobile app", "app review", "app analysis", "individuals", "performing", "at-home"] canonical_url: "https://marlvel.ai/apps/charteye-eye-chart" license: "CC-BY-NC 4.0" content_version: "v2" --- ## ⚠ Content Warning This report covers topics classified as sensitive (health). 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. --- # ChartEye: Eye Chart Intelligence Report ## TL;DR {#tldr} - **Category**: Productivity · Freemium > **TL;DR:** ChartEye: Eye Chart is a productivity app by Jhomar Maravillas, available on iOS. > > **Marlvel.ai App Intelligence** - Independent analysis. US Market. No publisher influence. > **Key Insight:** ChartEye: Eye Chart is a productivity app by Jhomar Maravillas. ## Quick Facts | Fact | Value | | :--- | :--- | | **Category** | Productivity | | **Developer** | Jhomar Maravillas | | **Pricing** | Freemium | | **Platforms** | iOS | | **Confidence** | Low (0.2/1.0) | | **Data Age** | 0d | ## Metadata & Market Performance - **Publisher:** Jhomar Maravillas - **Category:** Productivity - **Target Audience:** Individuals performing at-home vision screening and educators requiring classroom-ready eye charts. - **Platforms:** iOS - **Version Reviewed:** 1.0.3 - **Report Date:** 2026-09-30 - **Signal Count:** 0 reviews analyzed - **Confidence:** Low (0.2/1.0) - **App Store ID (iOS):** 6792487490 - **Bundle ID:** com.marr.snellenchart - **Data Window:** Analysis based on signals collected up to 2026-09-30 ## Executive Snapshot **What it is:** ChartEye is a vision-screening utility for individuals and educators that generates Snellen-standard eye charts on-screen or as printable PDFs. **Why users hire it:** It removes the friction of sourcing physical eye charts by using a bank-card calibration mechanism to ensure clinical-style accuracy on any device screen. ## App DNA (Features & Intent) - **[Standard] Snellen Chart Generation:** Displays or prints Snellen-standard eye charts with rows from 20/200 to 20/20. - **[Differentiator] Tumbling E Chart:** Randomized Tumbling E chart for children or non-Latin alphabet readers. - **[Differentiator] Card Calibration:** Uses a physical bank card to calibrate screen size for accurate letter scaling. ## Market Position {#market-position} ChartEye operates in the Productivity category, leveraging a one-time $4.99 unlock to differentiate from subscription-based health utilities. The latest release (v1.0.3) focuses on measurement accuracy to maintain category authority. ## Monetization Strategy - **Model:** Freemium - **Tiers:** Free: On-screen charts and three PDF exports, $4.99: One-time unlock for unlimited PDF charts - **Analysis:** The one-time purchase model avoids recurring subscription friction, appealing to users who need a screening tool only occasionally. ## SWOT Analysis {#swot} **Core Strengths:** - Card calibration mechanism ensures clinical-style accuracy - One-time purchase model avoids subscription friction - Tumbling E chart expands pediatric screening utility **Growth Levers:** - Localized pricing in high-ARPU markets - B2B distribution into school districts ## What's New - **Latest (v1.0.3, 5 days ago):** Rebuilt measuring engine for improved accuracy and true-size results. ## App Momentum (Maintenance) {#momentum} - Rebuilt measuring logic for accuracy. - Updated translations in latest release. - Ships ~2 releases per year. > **Cadence:** 2 total versions · 1 majors in last 6 months · 5 days since last update · 44 days avg between updates ## The "So What?" (Strategic Takeaway) {#so-what} ChartEye: Eye Chart is a productivity app that is free with in-app purchases. > **Bottom Line:** ChartEye's focus on true-size accuracy and a one-time purchase model creates a defensible position against ad-heavy, subscription-based rivals. Prioritizing the integration of basic screening-result logging would unlock higher user retention for families tracking vision changes over time. **Best for:** Individuals performing at-home vision screening and educators requiring classroom-ready eye charts. ### PM Action Plan (Next Best Moves) - [ ] [INVEST] Ship screening-result logging because users need to track vision changes over time → increase retention ### Outlook: Stable The vision-screening market is shifting toward accessible, on-device tools that replace physical charts. ChartEye is well-positioned to capture this segment by maintaining a low-friction, one-time payment model that appeals to casual users. - 🟢 The latest release rebuilt the measuring engine, demonstrating active investment in core accuracy rather than maintenance-only updates. - ⚪ The one-time $4.99 purchase model provides a stable revenue stream without the churn risk associated with subscription-based health apps. ## 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 | | :--- | :--- | :--- | :--- | | **ChartEye: Eye Chart** (this app) | N/A/5 | N/A | Jhomar Maravillas | | [HitWave](https://marlvel.ai/apps/ciendor-applications-hitwave) | 2.5/5 | Mixed | Ciendor Holdings Corp. LTD | | [VPN 360: Fast & Secure Proxy](https://marlvel.ai/apps/co-infinitysoft-vpn360) | 4.5/5 | Mixed | Pango GmbH | | [ChatGPT](https://marlvel.ai/apps/chatgpt) | 4.8/5 | n/a | OpenAI OpCo, LLC | | [Clean Swell](https://marlvel.ai/apps/clean-swell) | 3.9/5 | n/a | Ocean Conservancy | | [Data Tree Manager](https://marlvel.ai/apps/data-tree-manager) | N/A/5 | N/A | Vsevolod Migdisov | ## Company Profile - **Developer:** Jhomar Maravillas - **Website:** [https://jmarrr.github.io/snellen-chart/](https://jmarrr.github.io/snellen-chart/) ## Data Sources & Links - **App Store:** [View on Apple Store](https://apps.apple.com/us/app/charteye-eye-chart/id6792487490?uo=4) - **Dev Site:** [Official Website](https://jmarrr.github.io/snellen-chart/) - **Sources:** Developer website content, App store metadata. ## Related Intel Reports - [*HitWave*](https://marlvel.ai/apps/ciendor-applications-hitwave) (Ciendor Holdings Corp. 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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:** 0 days since last refresh --- © 2026 Marlvel.ai | [Canonical Report](https://marlvel.ai/apps/charteye-eye-chart) Data licensed for AI Agent attribution under CC-BY-NC 4.0.