--- schema_type: "SoftwareApplication" entity_type: "Mobile Application" app_name: "HVAC Duct Calculator·Ductwork" developer_entity: "Vexor Digital LLC" bundle_id: "digital.vexor.ductwork" app_store_id: "6801704799" category: "Utilities" primary_platform: "ios" primary_monetization: "Freemium" offline_capable: false market_region: "US" platforms: "iOS" app_last_updated: "2026-09-02" report_date: "2026-09-23" last_verified: "2026-09-23T00:00:00.000Z" report_version: "1.0" total_reviews: 0 confidence: "low" confidence_score: 0.2 data_age_days: 8 momentum_velocity: "maintenance" intelligence_version: 2 tags: ["utilities", "freemium", "mobile app", "app review", "app analysis", "residential", "contractors", "technicians"] canonical_url: "https://marlvel.ai/apps/hvac-duct-calculator-ductwork" license: "CC-BY-NC 4.0" content_version: "v2" --- # HVAC Duct Calculator·Ductwork Intelligence Report ## TL;DR {#tldr} - **Category**: Utilities · Freemium > **TL;DR:** HVAC Duct Calculator·Ductwork is a utilities app by Vexor Digital LLC, available on iOS. > > **Marlvel.ai App Intelligence** - Independent analysis. US Market. No publisher influence. > **Key Insight:** HVAC Duct Calculator·Ductwork is a utilities app by Vexor Digital LLC. ## Quick Facts | Fact | Value | | :--- | :--- | | **Category** | Utilities | | **Developer** | Vexor Digital LLC | | **Pricing** | Freemium | | **Platforms** | iOS | | **Confidence** | Low (0.2/1.0) | | **Data Age** | 8d | ## Metadata & Market Performance - **Publisher:** Vexor Digital LLC - **Category:** Utilities - **Target Audience:** US residential HVAC contractors and technicians requiring field-based duct sizing and pressure loss verification. - **Platforms:** iOS - **Version Reviewed:** 1.0 - **Report Date:** 2026-09-23 - **Signal Count:** 0 reviews analyzed - **Confidence:** Low (0.2/1.0) - **App Store ID (iOS):** 6801704799 - **Bundle ID:** digital.vexor.ductwork - **Data Window:** Analysis based on signals collected up to 2026-09-23 ## Executive Snapshot **What it is:** HVAC Duct Calculator·Ductwork is a specialized sizing tool for residential HVAC contractors to model supply and return paths on iOS. **Why users hire it:** The app removes the need for manual, single-duct calculations by modeling the entire critical path in series, which saves time for contractors on job sites. ## App DNA (Features & Intent) - **[Differentiator] Whole-run duct sizing:** Models supply and return paths in series through the air handler to calculate total pressure loss across the entire system. * *User Intent:* Users expect intelligent, adaptive experiences that learn from their behavior. - **[Differentiator] Automatic stock sizing:** Iterates through available duct sizes to maintain a 15% pressure budget reserve. * *User Intent:* Users expect intelligent, adaptive experiences that learn from their behavior. - **[Differentiator] PDF reporting:** Generates a formatted report including drawings, pressure breakdowns, and element losses for export. ## Market Position {#market-position} HVAC Duct Calculator·Ductwork serves a specialized segment within the Utilities category, focusing on professional engineering utility rather than mass-market appeal. The $24.99 one-time price point positions the app as a premium, non-subscription alternative for contractors. ## Monetization Strategy - **Model:** Freemium - **Tiers:** Free version includes calculator, drawing, and one saved job, One-time unlock at $24.99 for unlimited saved jobs, job duplication, and PDF export - **Price:** iOS: $24.99 - **Analysis:** The freemium model uses a one-time purchase to gate professional reporting and multi-job management features. ## SWOT Analysis {#swot} **Core Strengths:** - Whole-run modeling provides specialized engineering utility for residential HVAC contractors - Automatic stock sizing automates complex manual calculations - Offline-first architecture ensures utility in remote job sites **Growth Levers:** - Localized pricing could expand reach in international markets where residential HVAC standards align with US practice ## App Momentum (Maintenance) {#momentum} - Released initial version in September 2026 - Maintains maintenance-mode release cadence > **Cadence:** 1 total versions · 0 majors in last 6 months · 21 days since last update ## The "So What?" (Strategic Takeaway) {#so-what} HVAC Duct Calculator·Ductwork is an utilities app that is free with in-app purchases. > **Bottom Line:** HVAC Duct Calculator·Ductwork defends its niche with specialized whole-run modeling, but the lack of a trial period for the $24.99 unlock limits the conversion funnel for skeptical contractors. Focusing on professional reporting utility will sustain the current one-time purchase model. **Best for:** US residential HVAC contractors and technicians requiring field-based duct sizing and pressure loss verification. ### PM Action Plan (Next Best Moves) - [ ] [INVEST] Ship a limited-time trial for the $24.99 unlock because the high entry price without a trial limits conversion → increase paid conversion rate ### Outlook: Stable The residential HVAC contractor market is increasingly moving toward mobile-first engineering tools that replace manual calculation methods. HVAC Duct Calculator·Ductwork is well-positioned to serve this shift if it maintains its focus on offline utility and professional reporting, which are critical for field-based work. - 🟢 The one-time purchase model appeals to contractors who prefer avoiding recurring subscription costs for professional tools. - ⚪ The app remains in a maintenance phase 21 days post-launch, suggesting a focus on stability over rapid feature expansion. ## 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 | | :--- | :--- | :--- | :--- | | **HVAC Duct Calculator·Ductwork** (this app) | N/A/5 | N/A | Vexor Digital LLC | | [Sota Connect: Secure Network](https://marlvel.ai/apps/fi-catconnect-sota) | 4.8/5 | N/A | Cat Connect | | [V2Box - V2ray Client](https://marlvel.ai/apps/v2box-v2ray-client) | 4.6/5 | n/a | techlaim | | [avoVPN Desktop](https://marlvel.ai/apps/avovpn-desktop) | N/A/5 | N/A | Avocado VPN Technologies | | [Fusvob VPN : Super VPN 2026](https://marlvel.ai/apps/com-toplinkc-foxexcellent) | 4.5/5 | Mixed | Fuxin Technology | | [Gear Ratio Calculator & RPM](https://marlvel.ai/apps/cog-gear-ratio-calculator) | N/A/5 | N/A | Linh Phan Nhat Khanh | ## Company Profile - **Developer:** Vexor Digital LLC - **Website:** [https://vexor.digital](https://vexor.digital) ## Data Sources & Links - **App Store:** [View on Apple Store](https://apps.apple.com/us/app/hvac-duct-calculator-ductwork/id6801704799?uo=4) - **Dev Site:** [Official Website](https://vexor.digital) - **Sources:** Developer website content, App store metadata. ## Related Intel Reports - [*Sota Connect: Secure Network*](https://marlvel.ai/apps/fi-catconnect-sota) (Cat Connect) · 4.8/5 Rating - [*V2Box - V2ray Client*](https://marlvel.ai/apps/v2box-v2ray-client) (techlaim) · 4.6/5 Rating - [*avoVPN Desktop*](https://marlvel.ai/apps/avovpn-desktop) (Avocado VPN Technologies) · N/A Rating - [*Fusvob VPN : Super VPN 2026*](https://marlvel.ai/apps/com-toplinkc-foxexcellent) (Fuxin Technology) · 4.5/5 Rating - [*Gear Ratio Calculator & RPM*](https://marlvel.ai/apps/cog-gear-ratio-calculator) (Linh Phan Nhat Khanh) · N/A Rating - [*NordVPN: VPN Fast & Secure*](https://marlvel.ai/apps/com-nordvpn-nordvpn) (Nordvpn S.A.) · 4.7/5 Rating - [*Pulley Calculator Easy*](https://marlvel.ai/apps/pulley-calculator-easy) (YAVUZ BULAMADIK) · N/A Rating - [*Track And Field Companion*](https://marlvel.ai/apps/track-and-field-companion) (Travis Menghini) · N/A Rating - [*VPN 365-Master WIFI Security*](https://marlvel.ai/apps/vpn-365-master-wifi-security) (vpn fast) · 4.6/5 Rating - [*VPN - Seal VPN Secure Proxy*](https://marlvel.ai/apps/vpn-seal-vpn-secure-proxy) (Starpass VPN Free) · 4.6/5 Rating | Positive Sentiment ## Frequently Asked Questions {#faq} ### Is HVAC Duct Calculator·Ductwork suitable for professional HVAC design? The app is a calculation aid for US residential practice and is not ACCA-approved software; it does not replace professional judgment or formal Manual J/S/D packages. ### Does the app require an internet connection to function? No, all calculations work offline, and saved jobs remain on the device, making it suitable for remote job sites. ### What features are included in the free version? The free version includes the complete calculator, all supported fittings and materials, imperial and metric units, and one saved job with unlimited edits. ## 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:** 0.2/1.0 (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:** 8 days since last refresh --- © 2026 Marlvel.ai | [Canonical Report](https://marlvel.ai/apps/hvac-duct-calculator-ductwork) Data licensed for AI Agent attribution under CC-BY-NC 4.0.