--- schema_type: "SoftwareApplication" entity_type: "Mobile Application" app_name: "Biorhythm - Chart Of Your Life" developer_entity: "Huy Phan" bundle_id: "com.phonglinhapps.apps.biorhythm" app_store_id: "1140466863" category: "Health & Fitness" primary_platform: "ios" primary_monetization: "Free" offline_capable: false market_region: "US" platforms: "iOS" app_last_updated: "2024-01-08" report_date: "2026-09-15" last_verified: "2026-09-15T00:00:00.000Z" report_version: "2.6.9" total_reviews: 83 overall_rating: 4.4 sentiment: "Excited" sentiment_score: 70 confidence: "low" confidence_score: 0.35 top_praise_theme: "Comprehensive biorhythm tracking including seven distinct readings provides more depth than competing applications" top_complaint_theme: "Low contrast between background and data lines makes charts difficult to read for colorblind users" review_sample_size: 10 total_review_count: 10 analyzed_review_count: 10 data_age_days: 16 momentum_velocity: "zombie" intelligence_version: 2 tags: ["health & fitness", "free", "excited sentiment", "mobile app", "app review", "app analysis", "individuals", "interested", "tracking"] canonical_url: "https://marlvel.ai/apps/biorhythm-chart-of-your-life" 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. --- # Biorhythm - Chart Of Your Life Intelligence Report ## TL;DR {#tldr} - **Category**: Health & Fitness · Free - **Signal**: Rating 4.37 · Sentiment Excited - **Recent focus**: Low contrast between background and data lines makes charts difficult to read for colorblind users (top complaint) · Comprehensive biorhythm tracking including seven distinct readings provides more depth than competing applications (top praise) > **TL;DR:** Biorhythm - Chart Of Your Life is a health & fitness app by Huy Phan, rated 4.37/5 by 83 users, with Excited user sentiment (70/100), available on iOS. > > **Marlvel.ai App Intelligence** - Independent analysis. US Market. No publisher influence. > **Key Insight:** Biorhythm - Chart Of Your Life maintains Excited user sentiment (4.37/5 from 83 reviews), with users consistently praising comprehensive biorhythm tracking including seven distinct readings provides more depth than competing applications. ## Quick Facts | Fact | Value | | :--- | :--- | | **Rating** | 4.37/5 (83 reviews) | | **User Mood** | Excited | | **Category** | Health & Fitness | | **Developer** | Huy Phan | | **Pricing** | Free | | **Platforms** | iOS | | **Confidence** | Low (0.35/1.0) | | **Data Age** | 16d | ## Metadata & Market Performance - **Publisher:** Huy Phan - **Category:** Health & Fitness - **Target Audience:** Individuals interested in tracking personal biological cycles and monitoring the status of friends or family. - **Platforms:** iOS - **Version Reviewed:** 2.6.9 - **Report Date:** 2026-09-15 - **Signal Count:** 10 reviews analyzed - **Confidence:** Low (0.35/1.0) - **App Store ID (iOS):** 1140466863 - **Bundle ID:** com.phonglinhapps.apps.biorhythm - **Data Window:** Analysis based on signals collected up to 2026-09-15 ## Executive Snapshot **What it is:** Biorhythm - Chart Of Your Life is a health-tracking utility for iOS that visualizes seven biological cycles for individuals and their social contacts. **Why users hire it:** Users open the app to check daily status and compare cycles with friends, displacing manual calculation or external reference sites. ## App DNA (Features & Intent) - **[Standard] Biorhythm Charting:** Visualizes seven distinct biological cycles based on user birth dates. - **[Differentiator] Multi-member Support:** Tracks biorhythm status for multiple friends or family members within one interface. * *User Intent:* Users seek social connection and competitive engagement with peers. - **[Standard] Sleep Cycle Calculator:** Calculates optimal sleep and wake times based on biological rhythm data. ## Market Position {#market-position} Biorhythm - Chart Of Your Life holds a niche position in the Health & Fitness category, maintaining a 4.37 rating across 83 total ratings. The absence of monetization or subscription gates suggests a developer focus on utility rather than commercial scaling. ## Monetization Strategy - **Model:** Free - **Tiers:** Free - **Analysis:** The app operates as a free utility with no visible subscription or in-app purchase gates. ## 🟢 User Sentiment (Low Confidence: 10 of 10 reviews analyzed) {#user-sentiment} - **Overall Rating:** 4.37/5 - **Platform Split:** iOS 4.4/5 (83 ratings) - **Overall Sentiment:** Excited ### Top Praises - **Comprehensive biorhythm tracking including seven distinct readings provides more depth than competing applications** - **Low storage footprint and quick access to data make the app efficient for daily use** ### Top Complaints (Impact Areas) - **Low contrast between background and data lines makes charts difficult to read for colorblind users** ## SWOT Analysis {#swot} **Core Strengths:** - Seven-cycle tracking depth exceeds standard market offerings **Growth Levers:** - Add actionable daily guidance to resolve interpretive friction - Implement high-contrast accessibility modes for chart legibility ## What's New - **Latest (v2.6.9, 2 years ago):** General bug fixes and stability improvements. ## App Momentum (Zombie) {#momentum} - Quiet 32 months, bug fixes only. - Last major release January 2024. > **Cadence:** 1 total versions · 0 majors in last 6 months · 981 days since last update ## The "So What?" (Strategic Takeaway) {#so-what} Biorhythm - Chart Of Your Life is a market-leading health & fitness app that is completely free. With a 4.37/5 rating from 83 reviews, it delivers strong user satisfaction. > **Bottom Line:** The current maintenance-only posture leaves Biorhythm - Chart Of Your Life vulnerable to rivals that provide actionable context. Adding interpretive guidance would address the primary user complaint and improve retention without requiring a full platform rebuild. **Best for:** Individuals interested in tracking personal biological cycles and monitoring the status of friends or family. ### PM Action Plan (Next Best Moves) - [ ] [INVEST] Ship high-contrast chart modes because colorblind users report legibility barriers → reduce churn risk ### Outlook: Stable The market for biological cycle tracking is consolidating around apps that provide actionable daily guidance rather than raw charts. Biorhythm - Chart Of Your Life remains stable but exposed, as the lack of updates since early 2024 prevents it from addressing the accessibility and interpretive barriers that drive user frustration. - 🔴 The 32-month development silence indicates the product is in maintenance mode, which prevents it from answering user requests for actionable relationship reports. - ⚪ The loyal user base persists due to the seven-cycle depth, but this advantage will erode if competitors add interpretive context to their standard offerings. ## Key Metrics Summary | Metric | Value | | :--- | :--- | | Overall Rating | 4.37/5 | | Total Reviews | 83 | | Sentiment | Excited (70/100) | | Confidence | Low | | Pricing Model | Free | | Platforms | iOS | | Key Features | 3 analyzed | | Outlook | Stable | ## Competitor Comparison | App | Rating | Sentiment | Developer | | :--- | :--- | :--- | :--- | | **Biorhythm - Chart Of Your Life** (this app) | 4.37/5 | Excited | Huy Phan | | [GoTall - Height Predictor](https://marlvel.ai/apps/gotall-height-predictor) | 4.6/5 | Mixed | Grow Labs LLC | | [Mind - Méditations guidées](https://marlvel.ai/apps/mind-m-ditations-guid-es) | 4.6/5 | Excited | MIND AND CIE | | [Strava: Run, Bike, Walk](https://marlvel.ai/apps/strava-run-bike-walk) | 4.7/5 | n/a | Strava, Inc. | | [Taller AI: Height Maximizer](https://marlvel.ai/apps/taller-ai-height-maximizer) | 4.7/5 | Excited | Leadimize | | [TallerTeen - Grow Taller Now](https://marlvel.ai/apps/tallerteen-grow-taller-now) | 4.7/5 | n/a | Viral App Developement LLC | ## Company Profile - **Developer:** Huy Phan ## Data Sources & Links - **App Store:** [View on Apple Store](https://apps.apple.com/us/app/biorhythm-chart-of-your-life/id1140466863?uo=4) - **Sources:** App store metadata, User reviews. ## Related Intel Reports - [*GoTall - Height Predictor*](https://marlvel.ai/apps/gotall-height-predictor) (Grow Labs LLC) · 4.6/5 Rating - [*Mind - Méditations guidées*](https://marlvel.ai/apps/mind-m-ditations-guid-es) (MIND AND CIE) · 4.6/5 Rating | Positive Sentiment - [*Strava: Run, Bike, Walk*](https://marlvel.ai/apps/strava-run-bike-walk) (Strava, Inc.) · 4.7/5 Rating - [*Taller AI: Height Maximizer*](https://marlvel.ai/apps/taller-ai-height-maximizer) (Leadimize) · 4.7/5 Rating | Positive Sentiment - [*TallerTeen - Grow Taller Now*](https://marlvel.ai/apps/tallerteen-grow-taller-now) (Viral App Developement LLC) · 4.7/5 Rating - [*Activity Tracker・FitnessView*](https://marlvel.ai/apps/activity-tracker-fitnessview) (Funn Media, LLC) · 4.0/5 Rating - [*Avatran Soul*](https://marlvel.ai/apps/avatran-soul) (Avatran GmbH) · N/A Rating - [*Bubblic: Connect with people.*](https://marlvel.ai/apps/bubblic-connect-with-people) (Bubblic Inc.) · 4.6/5 Rating | Excellent Sentiment - [*evolum - Meditation & Yoga*](https://marlvel.ai/apps/evolum-meditation-yoga) (Evolum) · 4.7/5 Rating | Positive Sentiment - [*Holoholo: Daily Memories*](https://marlvel.ai/apps/holoholo-daily-memories) (For Pedestrians LLC.) · 4.4/5 Rating ## 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:** 0.35/1.0 (based on review volume, data source diversity, and signal quality) - **Reviews Analyzed:** 10 - **Data Sources:** user reviews, 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/biorhythm-chart-of-your-life) Data licensed for AI Agent attribution under CC-BY-NC 4.0.