--- schema_type: "SoftwareApplication" entity_type: "Mobile Application" app_name: "Rebar Calculator Pro" developer_entity: "Anna Filobok" bundle_id: "com.filobok.RebarCalculatorPro" app_store_id: "6503151217" category: "Utilities" primary_platform: "ios" primary_monetization: "Free" offline_capable: false market_region: "US" platforms: "iOS" app_last_updated: "2025-11-25" report_date: "2026-06-22" last_verified: "2026-06-22T08:17:59.763Z" report_version: "1.0" total_reviews: 1 overall_rating: 1 confidence: "low" confidence_score: 0.35 data_age_days: 10 momentum_velocity: "zombie" intelligence_version: 3 nemesis: "Steel Weight Calculator App" competitor_count: 7 tags: ["utilities", "free", "mobile app", "app review", "app analysis", "construction", "professionals", "builders"] canonical_url: "https://marlvel.ai/apps/rebar-calculator-pro" license: "CC-BY-NC 4.0" content_version: "v2" --- # Rebar Calculator Pro App Audit ## TL;DR {#tldr} - **Category**: Utilities · Free - **Signal**: Rating 1 > **TL;DR:** Rebar Calculator Pro is a utilities app by Anna Filobok, rated 1/5 by 1 users, available on iOS. > > **Marlvel.ai App Intelligence** — Independent analysis. US Market. No publisher influence. > **Key Insight:** Rebar Calculator Pro is a utilities app by Anna Filobok. ## Quick Facts | Fact | Value | | :--- | :--- | | **Rating** | 1/5 (1 reviews) | | **Category** | Utilities | | **Developer** | Anna Filobok | | **Pricing** | Free | | **Platforms** | iOS | | **Confidence** | Low (0.35/1.0) | | **Data Age** | 10d | ## Metadata & Market Performance - **Publisher:** Anna Filobok - **Category:** Utilities - **Target Audience:** Construction professionals and DIY builders requiring quick material estimation for concrete slab reinforcement. - **Platforms:** iOS - **Version Audited:** 1.0 - **Audit Date:** 2026-06-22 - **Signal Count:** 1 reviews analyzed - **Confidence:** Low (0.35/1.0) - **App Store ID (iOS):** 6503151217 - **Bundle ID:** com.filobok.RebarCalculatorPro - **Performance Trend:** Declining - **Data Window:** Analysis based on signals collected up to 2026-06-22 ## Executive Snapshot **What it is:** Rebar Calculator Pro is a construction utility for calculating rebar lengths and piece counts on iOS. **Why users hire it:** Users hire this tool to eliminate manual estimation errors during concrete reinforcement planning, saving time on site-specific material orders. ## App DNA (Features & Intent) - **[Standard] Multi-Unit Conversion:** Real-time conversion of slab dimensions and rebar lengths between feet, inches, meters, centimeters, and yards. - **[Standard] Instant Grid Calculation:** Automated output of grid length, grid width, total rebar length, and piece count based on slab dimensions. - **[Standard] Edge Clearance Adjustment:** Input field for edge clearance parameters to refine rebar quantity calculations. ## Market Position {#market-position} Rebar Calculator Pro holds a 1.0 rating on a single review, placing it at the bottom of the utility category. The lack of professional-grade material libraries prevents it from competing with established engineering tools. ## Monetization Strategy - **Model:** Free - **Tiers:** Free - **Analysis:** The app is currently distributed as a free utility with no visible in-app purchase or subscription gates. ## SWOT Analysis {#swot} **Core Strengths:** - Single-purpose interface reduces friction for rapid field calculations **Critical Frictions:** - 1.0 rating on the only available review - No material density logic - No monetization model **Growth Levers:** - Integrate material-specific density libraries - Add export features for professional reporting **Market Threats:** - Vertical integration by procurement-linked apps - Subscription-funded rivals with higher trust metrics ## Recent Changes (v2 → v3) {#recent-changes} The analysis shifted from identifying general stability issues to highlighting specific feature and business model gaps that prevent the app from competing with professional-grade construction tools. **Overall trend**: Declining **Compared at**: 2026-06-22 ### High-impact changes - **[Added] New competitive weaknesses and threats** (swot) — Added 'No material density logic' and 'No monetization model' as weaknesses, and 'Vertical integration by procurement-linked apps' as a threat. - **[Shifted] Competitive landscape update** (positioning) — Replaced 'Rebar Calc' with 'Steel Weight Calculator App' as the primary nemesis, focusing on the lack of material-specific data and subscription funding. ### Medium-impact changes - **[Added] Identification of critical feature gaps** (features) — Added 'Material density library' and 'Professional reporting export' as missing features compared to market alternatives. - **[Added] Strategic pivot recommendations** (positioning) — Added PM action items to implement material density integration and a freemium model to address development funding and professional trust. ## Rivals Landscape {#rivals} > Competitive positioning identified by AI analysis of app features, category, and market signals. ### Rebar Calculator Pro vs Steel Weight Calculator App — Head to Head - **[Steel Weight Calculator App](https://marlvel.ai/apps/steel-weight-calculator-app)** by Valaji Global: This app directly competes for the same construction and engineering professional audience by providing specialized material calculations and unit conversions. - **Key differences:** - Offers a comprehensive steel type library that provides deeper material-specific data than our basic slab calculator. - Monetizes through an ad-free subscription model, providing a cleaner, more professional user experience than ad-supported alternatives. - Maintains a significantly higher review count and rating, establishing greater social proof and trust within the construction niche. - **Where Rebar Calculator Pro wins:** - ✅ Focuses on rapid, real-time slab and rebar piece estimation, reducing friction for quick field calculations. - ✅ Provides a more streamlined, single-purpose interface that avoids the complexity of broader steel weight databases. - **Where Steel Weight Calculator App wins:** - ❌ Includes a robust steel type library that allows for more accurate weight and material density calculations. - ❌ Leverages a proven subscription model to fund ongoing development and maintain a higher quality user interface. - **Verdict:** The target app must pivot toward a premium, ad-free experience and expand its calculation logic to include material density to remain competitive. ### Peers (What They Do Better) - **[Angle Meter PRO](https://marlvel.ai/apps/angle-meter-pro)** by nakhon phagdeechat: Operates in the same construction utility space by providing measurement tools for physical site work. - Utilizes camera-based measurement and image analysis, offering a more interactive, visual approach to site surveying. - Includes data documentation features that allow users to save and export measurements for professional reporting purposes. - **[Beam Calculator.](https://marlvel.ai/apps/beam-calculator-1)** by Sachinbhai Surani: Targets the same structural engineering and construction user base with specialized calculators for building components. - Features a structural analysis solver that provides deeper engineering insights than our basic rebar length estimation. - Allows users to save and load complex beam configurations, offering a workflow-based utility that encourages long-term retention. - **[Field of View Calculator](https://marlvel.ai/apps/field-of-view-calculator)** by Apogee Instruments: Competes for the same professional utility market by offering highly specific, industry-standard calculation engines. - Integrates complex sensor model selection, catering to a highly technical audience that requires precision hardware-based calculations. - Provides a long-standing, stable calculation engine that has built significant credibility within the specialized instrumentation industry. - **[Aspect Ratio Pro](https://marlvel.ai/apps/aspect-ratio-pro)** by App ahead GmbH: Shares the same utility-focused category by providing specialized mathematical calculation tools for professional workflows. - Focuses on visual and design-oriented aspect ratio math rather than construction-specific rebar or slab measurements. - Utilizes a rule-of-three calculator engine that serves a different professional demographic despite the shared utility classification. ### New Kids on the Block (What's Innovative) - **[Irrigation Calculator Pro](https://marlvel.ai/apps/irrigation-calculator-pro)** by Cederic Schmid: Targets the same 'Pro' utility segment by offering a feature-rich calculator with history and analytics capabilities. - Provides an analytics dashboard and history tracking, offering a more data-centric approach to project management than our current tool. - **[MKS Beton](https://marlvel.ai/apps/com-mksbetongroup-mymksbeton)** by MKS BETON LLC: A new entrant that combines material calculation with commercial inquiry systems, threatening to capture our user base through vertical integration. - Integrates a product catalog and commercial inquiry system, bridging the gap between calculation and direct material procurement. ## App Momentum (Zombie) {#momentum} - Released initial version Nov 2025. - No feature updates since launch. > **Cadence:** 1 total versions · 0 majors in last 6 months · 209 days since last update ## The "So What?" (Strategic Takeaway) {#so-what} Rebar Calculator Pro is an established utilities app that is completely free. With a 1/5 rating from 1 reviews, it shows polarized user reception. > **Bottom Line:** Rebar Calculator Pro provides a basic utility but lacks the professional depth to compete, so the PM must prioritize material-density logic to move beyond a single-use tool. **Best for:** Construction professionals and DIY builders requiring quick material estimation for concrete slab reinforcement. ### PM Action Plan (Next Best Moves) - [ ] [INVEST] [HIGH IMPACT] Ship material density integration because competitors like Steel Weight Calculator use it to capture professional trust → increase retention — *Competitor analysis shows material density is a key differentiator for professional-grade construction apps.* _(trade-off: deprioritize Delay the UI redesign sprint — professional utility takes precedence over aesthetic updates.)_ - [ ] [PIVOT] [HIGH IMPACT] Pivot to a freemium model because the current free-only distribution fails to fund ongoing development → improve feature cadence — *The current free model provides no revenue to support the development of advanced engineering features.* _(trade-off: deprioritize Pause new feature development for two weeks to implement the paywall infrastructure.)_ ### Feature Gaps vs Competitors - Material density library (available in Steel Weight Calculator but missing here) - Professional reporting export (available in Angle Meter PRO but missing here) ### Outlook: Declining The construction utility market is consolidating around apps that offer integrated procurement and professional-grade material data. Rebar Calculator Pro remains exposed due to its lack of professional features, so the PM must pivot to a value-add model to avoid total market irrelevance. - 🔴 The lack of feature updates since the initial release suggests the app is in maintenance mode, which will accelerate churn. - 🔴 The 1.0 rating on the only review creates a negative social proof barrier that will suppress new-user conversion rates. ## Key Metrics Summary | Metric | Value | | :--- | :--- | | Overall Rating | 1/5 | | Total Reviews | 1 | | Confidence | Low | | Pricing Model | Free | | Platforms | iOS | | Key Features | 3 analyzed | | Trend | Declining | | Outlook | Declining | ## Competitor Comparison | App | Rating | Sentiment | Developer | | :--- | :--- | :--- | :--- | | **Rebar Calculator Pro** (this app) | 1/5 | N/A | Anna Filobok | | [MKS Beton](https://marlvel.ai/apps/com-mksbetongroup-mymksbeton) | N/A/5 | N/A | MKS BETON LLC | | [Angle Meter PRO](https://marlvel.ai/apps/angle-meter-pro) | 4.2/5 | N/A | nakhon phagdeechat | | [Irrigation Calculator Pro](https://marlvel.ai/apps/irrigation-calculator-pro) | N/A/5 | N/A | Cederic Schmid | | [Aspect Ratio Pro](https://marlvel.ai/apps/aspect-ratio-pro) | 4.0/5 | N/A | App ahead GmbH | | [Beam Calculator.](https://marlvel.ai/apps/beam-calculator-1) | 5.0/5 | Thrilled | Sachinbhai Surani | ## Company Profile - **Developer:** Anna Filobok - **Website:** [https://feelmanapp.com/portfolio/rebar-calculator-pro/](https://feelmanapp.com/portfolio/rebar-calculator-pro/) ## Data Sources & Links - **App Store:** [View on Apple Store](https://apps.apple.com/us/app/rebar-calculator-pro/id6503151217?uo=4) - **Dev Site:** [Official Website](https://feelmanapp.com/portfolio/rebar-calculator-pro/) - **Sources:** Developer website content, App store metadata, User reviews. ## Related Intel Reports - [*MKS Beton*](https://marlvel.ai/apps/com-mksbetongroup-mymksbeton) (MKS BETON LLC) — N/A Rating | N/A Sentiment - [*Angle Meter PRO*](https://marlvel.ai/apps/angle-meter-pro) (nakhon phagdeechat) — 4.2/5 Rating | N/A Sentiment - [*Irrigation Calculator Pro*](https://marlvel.ai/apps/irrigation-calculator-pro) (Cederic Schmid) — N/A Rating | N/A Sentiment - [*Aspect Ratio Pro*](https://marlvel.ai/apps/aspect-ratio-pro) (App ahead GmbH) — 4.0/5 Rating | N/A Sentiment - [*Beam Calculator.*](https://marlvel.ai/apps/beam-calculator-1) (Sachinbhai Surani) — 5.0/5 Rating | Excellent Sentiment - [*Field of View Calculator*](https://marlvel.ai/apps/field-of-view-calculator) (Apogee Instruments) — 5.0/5 Rating | Mixed Sentiment - [*Steel Weight Calculator App*](https://marlvel.ai/apps/steel-weight-calculator-app) (Valaji Global) — 4.7/5 Rating | N/A Sentiment - [*V2Box - V2ray Client*](https://marlvel.ai/apps/v2box-v2ray-client) (techlaim) — 4.6/5 Rating | Positive Sentiment - [*Quantumult X*](https://marlvel.ai/apps/quantumult-x) (Cross Utility Ltd) — 3.8/5 Rating | N/A Sentiment - [*Free VPN by Free VPN .org™*](https://marlvel.ai/apps/free-vpn-by-free-vpn-org) (Free VPN LLC) — 4.4/5 Rating | Mixed 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:** 0.35/1.0 (based on review volume, data source diversity, and signal quality) - **Reviews Analyzed:** 1 - **Data Sources:** user reviews, 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:** 10 days since last refresh --- © 2026 Marlvel.ai | [Canonical Report](https://marlvel.ai/apps/rebar-calculator-pro) Data licensed for AI Agent attribution under CC-BY-NC 4.0.