--- schema_type: "SoftwareApplication" entity_type: "Mobile Application" app_name: "Allday HVAC Calc" developer_entity: "Dmitrii Pankov" bundle_id: "ws.tilda.dmitriipankov.hvaccalc" app_store_id: "6446276144" category: "Utilities" primary_platform: "ios" primary_monetization: "Free" offline_capable: false market_region: "US" platforms: "iOS & Android" app_last_updated: "2026-04-21" report_date: "2026-09-23" last_verified: "2026-09-23T00:00:00.000Z" report_version: "1.6.17" total_reviews: 1 overall_rating: 5 sentiment: "Thrilled" sentiment_score: 90 confidence: "medium" confidence_score: 0.55 top_praise_theme: "HVAC technicians find the toolset elegant and functional for their daily professional field calculations" review_sample_size: 2 total_review_count: 2 analyzed_review_count: 2 data_age_days: 8 momentum_velocity: "maintenance" intelligence_version: 2 tags: ["utilities", "free", "thrilled sentiment", "mobile app", "app review", "app analysis", "engineers", "technicians", "requiring"] canonical_url: "https://marlvel.ai/apps/allday-hvac-calc" license: "CC-BY-NC 4.0" content_version: "v2" --- # Allday HVAC Calc Intelligence Report ## TL;DR {#tldr} - **Category**: Utilities · Free - **Signal**: Rating 5 · Sentiment Thrilled - **Recent focus**: HVAC technicians find the toolset elegant and functional for their daily professional field calculations (top praise) > **TL;DR:** Allday HVAC Calc is a utilities app by Dmitrii Pankov, rated 5/5 by 1 users, with Thrilled user sentiment (90/100), available on iOS & Android. > > **Marlvel.ai App Intelligence** - Independent analysis. US Market. No publisher influence. > **Key Insight:** Allday HVAC Calc maintains Thrilled user sentiment (5/5 from 1 review), with users consistently praising hvac technicians find the toolset elegant and functional for their daily professional field calculations. ## Quick Facts | Fact | Value | | :--- | :--- | | **Rating** | 5/5 (1 review) | | **User Mood** | Thrilled | | **Category** | Utilities | | **Developer** | Dmitrii Pankov | | **Pricing** | Free | | **Platforms** | iOS & Android | | **Confidence** | Medium (0.55/1.0) | | **Data Age** | 8d | ## Metadata & Market Performance - **Publisher:** Dmitrii Pankov - **Category:** Utilities - **Target Audience:** HVAC engineers and technicians requiring mobile-accessible, standardized engineering calculations for air and fluid systems. - **Platforms:** iOS & Android - **Version Reviewed:** 1.6.17 - **Report Date:** 2026-09-23 - **Signal Count:** 2 reviews analyzed - **Confidence:** Medium (0.55/1.0) - **App Store ID (iOS):** 6446276144 - **Bundle ID:** ws.tilda.dmitriipankov.hvaccalc - **Google Play ID:** ws.tilda.dmitriipankov.hvaccalc - **Data Window:** Analysis based on signals collected up to 2026-09-23 ## Executive Snapshot **What it is:** Allday HVAC Calc is a mobile utility for HVAC engineers that provides psychrometric, pipe, and duct calculation modules on iOS and Android. **Why users hire it:** The tool removes the cognitive friction of manual engineering lookups by providing interdependent calculations and reference formulas in a single, portable interface. ## App DNA (Features & Intent) - **[Standard] Psychrometric Calculator:** Determines air properties including humidity ratio, enthalpy, and vapor pressure from dry-bulb, wet-bulb, and relative humidity inputs. * *User Intent:* Users seek enhanced value through premium features. - **[Differentiator] Pipe Calculator:** Calculates velocity and pressure loss with interdependent flow rate, heat load, and temperature variables. - **[Differentiator] Duct Calculator:** Calculates speed and pressure loss for round, rectangular, and oval ducts with reverse calculation for power and flow rate. ## Market Position {#market-position} Allday HVAC Calc occupies a niche utility space for HVAC professionals, maintaining a 5.0-star rating despite a 155-day update gap. The absence of monetization signals a focus on professional utility over market share capture. ## Monetization Strategy - **Model:** Free - **Tiers:** Fully free utility with no IAP or ads - **Analysis:** The app operates as a free, ad-free utility with no monetization, likely serving as a professional portfolio or reference tool for the developer. ## 🟢 User Sentiment (Medium Confidence: 2 of 2 reviews analyzed) {#user-sentiment} - **Overall Rating:** 5/5 - **Platform Split:** iOS 5.0/5 (1 ratings) - **Overall Sentiment:** Thrilled ### Top Praises - **HVAC technicians find the toolset elegant and functional for their daily professional field calculations** ## SWOT Analysis {#swot} **Core Strengths:** - Interdependent calculation logic reduces manual data entry for engineers - Dual SI and IP unit support expands utility across international standards - Reference formula transparency builds professional trust in calculation outputs **Growth Levers:** - Integration of cloud-based project saving would address the lack of persistent data storage ## What's New - **Latest (v1.6.17, 5 months ago):** Added Power (Q) calculation from flow rate and Inlet/Outlet temperature calculations to the Pipe module. ## App Momentum (Maintenance) {#momentum} - Maintenance-only cadence, no recent feature expansion. - Last major release 155 days ago. > **Cadence:** 1 total versions · 1 majors in last 6 months · 155 days since last update ## The "So What?" (Strategic Takeaway) {#so-what} Allday HVAC Calc is an utilities app that is completely free. It holds a 5/5 rating from 1 review. > **Bottom Line:** Allday HVAC Calc maintains a high-utility baseline for field engineers, but the maintenance-only cadence risks losing ground to rivals that integrate cloud-based project management into their calculation workflows. **Best for:** HVAC engineers and technicians requiring mobile-accessible, standardized engineering calculations for air and fluid systems. ### PM Action Plan (Next Best Moves) - [ ] [MAINTAIN] Audit user-requested features because the current 155-day maintenance gap risks user churn → increase retention ### Outlook: Stable The HVAC utility market is shifting toward cloud-integrated workflows that allow for cross-device project management. Allday HVAC Calc remains a stable, high-utility reference tool, but its lack of cloud synchronization leaves it exposed to competitors that offer persistent project storage. - ⚪ The 155-day maintenance gap indicates the developer is prioritizing stability over new feature expansion, which limits long-term growth potential. ## Key Metrics Summary | Metric | Value | | :--- | :--- | | Overall Rating | 5/5 | | Total Reviews | 1 | | Sentiment | Thrilled (90/100) | | Confidence | Medium | | Pricing Model | Free | | Platforms | iOS & Android | | Key Features | 3 analyzed | | Outlook | Stable | ## Competitor Comparison | App | Rating | Sentiment | Developer | | :--- | :--- | :--- | :--- | | **Allday HVAC Calc** (this app) | 5/5 | Thrilled | Dmitrii Pankov | | [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:** Dmitrii Pankov - **Website:** [https://youtu.be/gp9iNi17Om4?si=261-RHGidlGx9VSK](https://youtu.be/gp9iNi17Om4?si=261-RHGidlGx9VSK) - **Social:** [YouTube](https://www.youtube.com/channel/UCeS6DfWybW_rl_zDXlSXvFA) ## Data Sources & Links - **App Store:** [View on Apple Store](https://apps.apple.com/us/app/allday-hvac-calc/id6446276144?uo=4) - **Google Play:** [View on Google Play](https://play.google.com/store/apps/details?id=ws.tilda.dmitriipankov.hvaccalc&hl=en&gl=us) - **Dev Site:** [Official Website](https://youtu.be/gp9iNi17Om4?si=261-RHGidlGx9VSK) - **Sources:** Developer website content, About us / company information, App store metadata, User reviews. ## 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 Allday HVAC Calc suitable for professional HVAC engineering work? Yes, the app provides standardized calculation modules for psychrometrics, pipes, and ducts, which technicians find functional for daily field calculations. ### Does Allday HVAC Calc contain ads or in-app purchases? No, the app is a fully free, ad-free utility with no in-app purchases. ### What are the limitations of using Allday HVAC Calc? The app currently lacks cloud-based project saving, meaning users cannot persist their calculation data across sessions or devices. ## 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:** 2 - **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:** 8 days since last refresh --- © 2026 Marlvel.ai | [Canonical Report](https://marlvel.ai/apps/allday-hvac-calc) Data licensed for AI Agent attribution under CC-BY-NC 4.0.