--- schema_type: "SoftwareApplication" entity_type: "Mobile Application" app_name: "Girths & caliper" developer_entity: "Alberto Lunardini" bundle_id: "fred76.com.ifit" app_store_id: "1447380258" category: "Health & Fitness" primary_platform: "ios" primary_monetization: "Subscription" offline_capable: false market_region: "US" platforms: "iOS" app_last_updated: "2026-06-23" report_date: "2026-10-08" last_verified: "2026-10-08T00:00:00.000Z" report_version: "16" total_reviews: 1 overall_rating: 5 sentiment: "Upset" sentiment_score: 10 confidence: "medium" confidence_score: 0.55 top_complaint_theme: "Users report the app contains numerous spelling errors that undermine trust in the health data tracking" review_sample_size: 1 total_review_count: 1 analyzed_review_count: 1 data_age_days: 29 momentum_velocity: "maintenance" intelligence_version: 2 tags: ["health & fitness", "subscription", "upset sentiment", "mobile app", "app review", "app analysis", "fitness", "enthusiasts,", "bodybuilders,"] canonical_url: "https://marlvel.ai/apps/girths-caliper" 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. --- # Girths & caliper Intelligence Report ## TL;DR {#tldr} - **Category**: Health & Fitness · Subscription - **Signal**: Rating 5 · Sentiment Upset - **Recent focus**: Users report the app contains numerous spelling errors that undermine trust in the health data tracking (top complaint) > **TL;DR:** Girths & caliper is a health & fitness app by Alberto Lunardini, rated 5/5 by 1 users, with Upset user sentiment (10/100), available on iOS. > > **Marlvel.ai App Intelligence** - Independent analysis. US Market. No publisher influence. > **Key Insight:** Girths & caliper faces Upset user sentiment (5/5 from 1 review), with users reporting users report the app contains numerous spelling errors that undermine trust in the health data tracking as the primary concern. ## Quick Facts | Fact | Value | | :--- | :--- | | **Rating** | 5/5 (1 review) | | **User Mood** | Upset | | **Category** | Health & Fitness | | **Developer** | Alberto Lunardini | | **Pricing** | Subscription | | **Platforms** | iOS | | **Confidence** | Medium (0.55/1.0) | | **Data Age** | 29d | ## Metadata & Market Performance - **Publisher:** Alberto Lunardini - **Category:** Health & Fitness - **Target Audience:** Fitness enthusiasts, bodybuilders, and personal trainers requiring precise, science-backed body composition tracking. - **Platforms:** iOS - **Version Reviewed:** 16 - **Report Date:** 2026-10-08 - **Signal Count:** 1 review analyzed - **Confidence:** Medium (0.55/1.0) - **App Store ID (iOS):** 1447380258 - **Bundle ID:** fred76.com.ifit - **Data Window:** Analysis based on signals collected up to 2026-10-08 ## Executive Snapshot **What it is:** Girths & caliper is a body composition tracking app for fitness professionals and athletes, structured around skinfold formulas and girth measurements on iOS. **Why users hire it:** The app removes the need for manual calculation of body fat percentages by automating validated clinical formulas, serving users who prioritize precision over general weight tracking. ## App DNA (Features & Intent) - **[Differentiator] Skinfold Caliper Formulas:** Calculation of body fat percentage using Jackson-Pollock, Durnin-Womersley, and Sloan protocols. * *User Intent:* Users seek enhanced value through premium features. - **[Differentiator] AI Coach:** Personalized feedback on measurement deltas powered by Anthropic Claude. * *User Intent:* Users value self-expression and personalized experiences. - **[Standard] Girth Tracking:** Logging of 16 circumference sites to track asymmetries. * *User Intent:* Users want visibility into their own performance and progress. ## Market Position {#market-position} Girths & caliper occupies a niche in the Health & Fitness category, relying on clinical protocols to differentiate from mass-market trackers. The single-rating count reflects a lack of broad market penetration, signaling a need for improved user trust to drive adoption. ## Monetization Strategy - **Model:** Subscription - **Tiers:** Monthly: €3.99/month, Yearly: €34.99/year - **Analysis:** Subscription model gates advanced AI insights and full feature set behind the Standard tier. ## 🔴 User Sentiment (Medium Confidence: 1 of 1 review analyzed) {#user-sentiment} - **Overall Rating:** 5/5 - **Platform Split:** iOS 5.0/5 (1 ratings) - **Overall Sentiment:** Upset - **Note:** The 5/5 store rating reflects cumulative history, while the Upset sentiment reflects recent user reviews analyzed by our AI pipeline. ### Top Complaints (Impact Areas) - **Users report the app contains numerous spelling errors that undermine trust in the health data tracking** ## SWOT Analysis {#swot} **Core Strengths:** - Clinical-grade formulas (Jackson-Pollock, Durnin-Womersley) provide a defensible barrier. **Growth Levers:** - Localized marketing to personal trainers could leverage CSV export for client management. ## What's New - **Latest (v16, 3 months ago):** Introduced an AI Coach powered by Anthropic Claude that provides personalized, actionable feedback on body composition changes via in-app chat. ## App Momentum (Maintenance) {#momentum} - Shipped AI Coach integration recently. - Maintains infrequent update cadence. > **Cadence:** 1 total versions · 1 majors in last 6 months · 106 days since last update ## The "So What?" (Strategic Takeaway) {#so-what} Girths & caliper is a health & fitness app. It holds a 5/5 rating from 1 review. > **Bottom Line:** Girths & caliper must address foundational trust issues, as spelling errors and privacy concerns currently outweigh the value of its clinical formulas. Resolving these presentation flaws would unlock the retention potential of its professional-grade tracking features. **Best for:** Fitness enthusiasts, bodybuilders, and personal trainers requiring precise, science-backed body composition tracking. ### PM Action Plan (Next Best Moves) - [ ] [PIVOT] Audit UI for spelling errors because users report typos undermine health data trust → improve retention ### Outlook: Mixed Users report: The professional fitness tracking market is increasingly sensitive to data privacy and professional presentation. Girths & caliper remains exposed until it addresses the trust issues identified by users, as even advanced AI features cannot compensate for a lack of basic quality assurance. - 🔴 The 107-day gap since the last update suggests a maintenance-mode cadence, which limits the app's ability to respond to user trust complaints. - 🟢 The integration of AI coaching provides a clear value-add for premium subscribers, provided the foundational trust issues are resolved. ## Key Metrics Summary | Metric | Value | | :--- | :--- | | Overall Rating | 5/5 | | Total Reviews | 1 | | Sentiment | Upset (10/100) | | Confidence | Medium | | Pricing Model | Subscription | | Platforms | iOS | | Key Features | 3 analyzed | | Outlook | Mixed | ## Competitor Comparison | App | Rating | Sentiment | Developer | | :--- | :--- | :--- | :--- | | **Girths & caliper** (this app) | 5/5 | Upset | Alberto Lunardini | | [Mind - Méditations guidées](https://marlvel.ai/apps/mind-m-ditations-guid-es) | 4.6/5 | Excited | MIND AND CIE | | [Caspar Health](https://marlvel.ai/apps/caspar-health) | 3.6/5 | Mixed | GOREHA GmbH | | [evolum - Meditation & Yoga](https://marlvel.ai/apps/evolum-meditation-yoga) | 4.7/5 | Excited | Rodger Studio (Apps) | | [FAMHLTH: Family Health Tracker](https://marlvel.ai/apps/famhlth-family-health-tracker) | N/A/5 | N/A | Quinton Nixon | | [GoTall - Height Predictor](https://marlvel.ai/apps/gotall-height-predictor) | 4.6/5 | Mixed | Grow Labs LLC | ## Company Profile - **Developer:** Alberto Lunardini - **Website:** [https://girthscaliper.pages.dev](https://girthscaliper.pages.dev) ## Data Sources & Links - **App Store ID:** 1447380258 - **Dev Site:** [Official Website](https://girthscaliper.pages.dev) - **Sources:** Developer website content, About us / company information, App store metadata, User reviews. ## Related Intel Reports - [*Mind - Méditations guidées*](https://marlvel.ai/apps/mind-m-ditations-guid-es) (MIND AND CIE) · 4.6/5 Rating | Positive Sentiment - [*Caspar Health*](https://marlvel.ai/apps/caspar-health) (GOREHA GmbH) · 3.6/5 Rating - [*evolum - Meditation & Yoga*](https://marlvel.ai/apps/evolum-meditation-yoga) (Rodger Studio (Apps)) · 4.7/5 Rating | Positive Sentiment - [*FAMHLTH: Family Health Tracker*](https://marlvel.ai/apps/famhlth-family-health-tracker) (Quinton Nixon) · N/A Rating - [*GoTall - Height Predictor*](https://marlvel.ai/apps/gotall-height-predictor) (Grow Labs LLC) · 4.6/5 Rating - [*Lunara: Cycle, Symptom Tracker*](https://marlvel.ai/apps/lunara-cycle-symptom-tracker) (Fuzhou Jiku Technology Co., Ltd.) · N/A Rating - [*Medical Kundali Match Health*](https://marlvel.ai/apps/medical-kundali-match-health) (Medical Match Pvt Ltd) · N/A Rating - [*Ovulation Predictor*](https://marlvel.ai/apps/ovulation-predictor) (RAHI PATEL) · 1.0/5 Rating - [*QUITTR - Break Free Now*](https://marlvel.ai/apps/com-vnm-i-give-up) (Quittr, LLC) · 4.6/5 Rating - [*Revu: Custom Skincare Analysis*](https://marlvel.ai/apps/revu-custom-skincare-analysis) (Joshua Roberts) · 5.0/5 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:** 0.55/1.0 (based on review volume, data source diversity, and signal quality) - **Reviews Analyzed:** 1 - **Data Sources:** user reviews, developer website, company about page, 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:** 29 days since last refresh --- © 2026 Marlvel.ai | [Canonical Report](https://marlvel.ai/apps/girths-caliper) Data licensed for AI Agent attribution under CC-BY-NC 4.0.