Duct Calculator - DuctCalc
Mikhail Nikitin · Utilities
Independent analytics for this App Store listing. AppTracker is not affiliated with Mikhail Nikitin.
Chart standing · US
What changed · US
Listing changes AppTracker has observed for this app in this storefront — new versions, price moves, rating shifts, and store copy.
Our biggest accuracy upgrade yet is here. Ductulator now delivers professional-grade duct sizing and psychrometric results built for real HVAC work. NEW • Mixed Air calculator: combine outdoor and return air, adjust the ratio, and instantly see dry bulb, RH, wet bulb, dew point, enthalpy, moisture, and condensation risk. MAJOR IMPROVEMENTS • Recalibrated round, rectangular, and flexible duct calculations for more dependable pressure-loss results. • Smarter size recommendations with improved friction, velocity, fitting-loss, and flex-compression calculations. • More reliable psychrometrics below freezing and at extremely low humidity. • Clearer result cards, consistent forward and reverse sizing, smoother onboarding, haptic feedback, and a refined launch experience. • Every core calculation has been thoroughly reviewed and reinforced with expanded automated testing. This is Ductulator’s most accurate and polished release yet.
Price & rating history · US
Reconstructed from the listing changes AppTracker has observed in this storefront. A field is charted once it has changed more than once, and each line starts at the value it moved from.
Average rating · ★ 4.50 now · 4 changes on record
Ratings breakdown · US
The star breakdown behind this app's rating in this storefront.
In-app purchases · US
What this app sells inside itself, grouped by kind and priced for this storefront.
Screenshots
About
Professional HVAC duct sizing and psychrometric calculations in one powerful app. DuctCalc replaces your physical ductulator with a modern, accurate digital tool trusted by engineers, contractors, and HVAC professionals. DUCT SIZING CALCULATOR Size round, rectangular, and flexible ductwork with ASHRAE-compliant calculations: • Forward Mode: Enter CFM airflow → Get multiple duct size options with velocity, friction loss, and pressure drop for each • Reverse Mode: Select a duct size → See CFM capacity at minimum, ideal, and maximum velocities Supports 6 duct materials: - Galvanized Steel - Flex Duct (extended & compressed) - Duct Board - Fiberglass Lined - PVC/Plastic FITTINGS & PRESSURE DROP Calculate total equivalent length and pressure loss with 10+ standard fittings: - 90° and 45° Elbows (smooth, 3-piece, mitered) - Tees (branch and straight-through) - Reducers and Transitions - Takeoffs (90° and 45°) - Register Boots PSYCHROMETRIC CALCULATOR Complete humid air property analysis with interactive chart: • 4 Input Modes: Dry bulb + wet bulb, relative humidity, dew point, or humidity ratio • Calculates: Enthalpy, specific volume, vapor pressure, saturation pressure, degree of saturation • Altitude correction for non-standard atmospheric pressure • Visual psychrometric chart showing current state point APPLICATION TYPES Pre-configured velocity limits per ASHRAE/ACCA guidelines: - Residential Supply (400-1000 FPM) - Residential Return (300-800 FPM) - Commercial Low Velocity (600-1500 FPM) - Commercial High Velocity (1000-2500 FPM) PROFESSIONAL FEATURES Imperial (I-P) and Metric (SI) units Airflow in CFM, m³/h, or L/s Color-coded status indicators Real-time validation warnings Built-in reference documentation Standard duct size tables (ASHRAE/SMACNA) WHY DUCTCALC? Unlike other apps that only size ducts OR calculate psychrometrics, DuctCalc combines both essential HVAC tools. No more switching between apps. Professional-grade accuracy in your pocket. Perfect for: • HVAC Engineers • Mechanical Contractors • MEP Design Firms • HVAC Technicians • Building Inspectors • Engineering Students Download DuctCalc and replace your old ductulator with the modern HVAC calculator trusted by professionals. Privacy Policy: https://docs.google.com/document/d/1r9oCuYYtQZlKWhZTlrP8Ck73V6NoR8lx82027oWszsA/edit?usp=sharing Terms of Service: https://docs.google.com/document/d/1MAY_7_uIVMnf4QYSpeaaSaSV7cm3-TJApqYVLfTHQ7w/edit?usp=sharing
What's new · 1.0.1
Our biggest accuracy upgrade yet is here. Ductulator now delivers professional-grade duct sizing and psychrometric results built for real HVAC work. NEW • Mixed Air calculator: combine outdoor and return air, adjust the ratio, and instantly see dry bulb, RH, wet bulb, dew point, enthalpy, moisture, and condensation risk. MAJOR IMPROVEMENTS • Recalibrated round, rectangular, and flexible duct calculations for more dependable pressure-loss results. • Smarter size recommendations with improved friction, velocity, fitting-loss, and flex-compression calculations. • More reliable psychrometrics below freezing and at extremely low humidity. • Clearer result cards, consistent forward and reverse sizing, smoother onboarding, haptic feedback, and a refined launch experience. • Every core calculation has been thoroughly reviewed and reinforced with expanded automated testing. This is Ductulator’s most accurate and polished release yet.
Details