--- schema_type: "SoftwareApplication" entity_type: "Mobile Application" app_name: "Multi Stage VO2 max Beep Test" developer_entity: "Catrnja Dev" bundle_id: "com.hasmir.multistage" app_store_id: "1425732540" category: "Health & Fitness" primary_platform: "ios" primary_monetization: "Free" offline_capable: false market_region: "US" platforms: "iOS" app_last_updated: "2018-08-20" report_date: "2026-08-10" last_verified: "2026-08-10T00:00:00.000Z" report_version: "1.1.1" total_reviews: 0 confidence: "low" confidence_score: 0.15 data_age_days: 19 momentum_velocity: "zombie" intelligence_version: 3 tags: ["health & fitness", "free", "mobile app", "app review", "app analysis", "athletes", "individuals", "performing"] canonical_url: "https://marlvel.ai/apps/multi-stage-vo2-max-beep-test" 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. --- # Multi Stage VO2 max Beep Test Intelligence Report ## TL;DR {#tldr} - **Category**: Health & Fitness · Free > **TL;DR:** Multi Stage VO2 max Beep Test is a health & fitness app by Catrnja Dev, available on iOS. > > **Marlvel.ai App Intelligence** - Independent analysis. US Market. No publisher influence. > **Key Insight:** Multi Stage VO2 max Beep Test is a health & fitness app by Catrnja Dev. ## Quick Facts | Fact | Value | | :--- | :--- | | **Category** | Health & Fitness | | **Developer** | Catrnja Dev | | **Pricing** | Free | | **Platforms** | iOS | | **Confidence** | Low (0.15/1.0) | | **Data Age** | 19d | ## Metadata & Market Performance - **Publisher:** Catrnja Dev - **Category:** Health & Fitness - **Target Audience:** Athletes and individuals performing cardiovascular fitness assessments who require a standardized beep test audio guide. - **Platforms:** iOS - **Version Reviewed:** 1.1.1 - **Report Date:** 2026-08-10 - **Signal Count:** 0 reviews analyzed - **Confidence:** Low (0.15/1.0) - **App Store ID (iOS):** 1425732540 - **Bundle ID:** com.hasmir.multistage - **Performance Trend:** Declining - **Data Window:** Analysis based on signals collected up to 2026-08-10 ## Executive Snapshot **What it is:** Multi Stage VO2 max Beep Test is a free cardiovascular fitness assessment tool for iOS that uses audio-guided protocols to calculate VO2 max. **Why users hire it:** Users hire this app to conduct standardized beep tests without needing a separate audio player, serving the need for portable, low-friction fitness tracking. ## App DNA (Features & Intent) - **[Standard] VO2 Max Calculation:** Calculates and displays maximum oxygen uptake based on test performance results. - **[Standard] Audio-Guided Testing:** Pre-recorded human voice audio file synchronizes runner intervals and speed increases. * *User Intent:* Users expect seamless access across multiple devices. ## Market Position {#market-position} The app occupies the niche utility segment of the Health & Fitness category, providing a free, no-frills tool for physical testing. With zero updates since 2018, the app relies entirely on organic search for its visibility, lacking the active development cadence required to compete with modern fitness trackers. ## Monetization Strategy - **Model:** Free - **Tiers:** Free - **Analysis:** The app is distributed as a free utility with no observable in-app purchases or subscription tiers. ## SWOT Analysis {#swot} **Core Strengths:** - Standardized audio-guided protocol provides a consistent testing experience for athletes. **Growth Levers:** - Integration with wearable devices could modernize the testing workflow for data-conscious users. ## Recent Changes (v2 → v3) {#recent-changes} The application remains in a dormant state, but the analytical outlook has shifted from recommending stability maintenance to advising a complete project sunset. **Overall trend**: Declining **Compared at**: 2026-08-10 ### High-impact changes - **[Shifted] Strategic Outlook** (positioning) ### Medium-impact changes - **[Shifted] SWOT Consolidation** (swot) ## What's New - **Latest (v1.1.1, 7 years ago):** General functional improvements. ## App Momentum (Zombie) {#momentum} - No updates since August 2018. - Zombie status, maintenance mode only. > **Cadence:** 1 total versions · 0 majors in last 6 months · 2912 days since last update ## The "So What?" (Strategic Takeaway) {#so-what} Multi Stage VO2 max Beep Test is a health & fitness app that is completely free. > **Bottom Line:** The app provides a functional, static utility for beep testing, but its seven-year update gap makes it a liability for long-term users, so the developer should sunset the project to focus on active products. **Best for:** Athletes and individuals performing cardiovascular fitness assessments who require a standardized beep test audio guide. ### PM Action Plan (Next Best Moves) - [ ] [SUNSET] Sunset the app because it has been in maintenance mode for seven years → reallocate developer focus to new projects. ### Outlook: Stable The market for simple fitness utilities is consolidating around apps that offer integrated health data logging and wearable support. This app's lack of development leaves it exposed to churn, so the PM should treat this as a legacy asset with no growth potential. - 🔴 The seven-year update gap suggests the developer has abandoned the product, which will lead to eventual failure as OS compatibility degrades. ## Key Metrics Summary | Metric | Value | | :--- | :--- | | Total Reviews | 0 | | Confidence | Low | | Pricing Model | Free | | Platforms | iOS | | Key Features | 2 analyzed | | Trend | Declining | | Outlook | Stable | ## Competitor Comparison | App | Rating | Sentiment | Developer | | :--- | :--- | :--- | :--- | | **Multi Stage VO2 max Beep Test** (this app) | N/A/5 | N/A | Catrnja Dev | | [GoTall - Height Predictor](https://marlvel.ai/apps/gotall-height-predictor) | 4.6/5 | n/a | 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:** Catrnja Dev - **Website:** [https://www.appsellow.com](https://www.appsellow.com) ## Data Sources & Links - **App Store:** [View on Apple Store](https://apps.apple.com/us/app/multi-stage-vo2-max-beep-test/id1425732540?uo=4) - **Dev Site:** [Official Website](https://www.appsellow.com) - **Sources:** Developer website content, App store metadata. ## 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 | Positive 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:** 0.15/1.0 (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:** 19 days since last refresh --- © 2026 Marlvel.ai | [Canonical Report](https://marlvel.ai/apps/multi-stage-vo2-max-beep-test) Data licensed for AI Agent attribution under CC-BY-NC 4.0.