DuctCalc is an HVAC utility app for iOS providing duct sizing and psychrometric calculations for engineers and contractors.
Product velocity
Dormant
Daily rank 🇺🇸
—
Utilities
Sentiment
4.5
23 reviews
Nemesis
HVAC-calculator
The App DNA
What makes this app unique?
Users hire the app to consolidate two essential HVAC workflows into one interface, removing the need to switch between separate tools during on-site design tasks.
For HVAC engineers, mechanical contractors, and MEP design professionals requiring on-site duct sizing and air property calculations.
Key features
Combines duct sizing and psychrometric analysis in one interface, removing the need to switch between separate tools.
Calculates round, rectangular, and flexible ductwork dimensions using ASHRAE-compliant formulas with forward and reverse modes.
Analyzes humid air properties including enthalpy, specific volume, and saturation pressure with interactive chart visualization.
How much does it cost?
The app is currently offered as a free utility with no visible subscription or IAP gates.
Velocity
Dormant developmentopaqueShow more...
The app has only released a single version (1.0) since its launch over five months ago. With no subsequent updates or activity, the development momentum is classified as zombie. There is no evidence of ongoing maintenance, feature development, or live operations.
Who built it?
Mikhail Nikitin
4 apps tracked · Utilities
E6B - Flight Computer
EXIF Metadata Editor & Remover
VinylSpot: Scan & Value RecordUser Sentiment
What do users think recently?
How are ratings & reviews evolving?
Not enough recent reviews to extract reliable themes yet.
Read the full review analysisCompetition
Competitive landscape for Duct Calculator - DuctCalc
How's the Utilities market?
DuctCalc operates as a specialized utility in the HVAC engineering space, competing against legacy calculators by offering a modern interface. The absence of monetization signals a focus on user acquisition over immediate revenue generation.
Read the market outlookThe rivals identified
By Trond Rossvoll
This app directly targets the same professional HVAC engineering audience by providing specialized technical calculations for ductwork and system efficiency.
- Includes specialized SFP and heat recovery efficiency calculations missing from our current core feature set.
- Focuses on broader mechanical system performance metrics rather than just physical duct sizing and psychrometrics.
Unlock the head-to-head verdict: where this rival wins, and where it loses.
Access the full report for freeThe Analyst's Read
Key takeaways for Duct Calculator - DuctCalc
Where is it heading?
The HVAC utility market is shifting toward integrated workflows that support documentation and reporting. DuctCalc is currently positioned as a basic utility, which leaves it vulnerable to competitors that offer more advanced engineering metrics and reporting capabilities.
- The dual-function interface provides a clear utility advantage over single-purpose calculators, which should drive steady adoption among field technicians.
- The lack of professional reporting features limits the app's utility for MEP firms, which will likely cap the total addressable market.
The SWOT
- Dual-function interface replaces multiple tools, reducing workflow friction for field technicians.
- Integration of advanced system-efficiency metrics could capture the power-user segment.
Next best moves
Ship data-export features because professional MEP firms require documentation for reporting → increase professional-tier adoption.
+ 2 more prioritized movesThe counter-intuitive read
The app's current free-only model is a strategic advantage for rapid market penetration…
Read the full takeFeature gaps
SFP and heat recovery efficiency calculations (available in HVAC-calculator but absent here) +1
Since the last report: The report shifts from addressing user-reported monetization friction to identifying professional-grade feature gaps and competitive parity risks.
Bottom line
DuctCalc succeeds by consolidating essential HVAC tools into a modern interface, but it lacks the professional reporting and advanced efficiency metrics needed to retain power users, so the PM should prioritize data-export features to secure professional adoption.
Unlock 2 critical frictions, 1 market threat, 2 more prioritized moves and the analyst’s take.
Access the full report for freeReport last updated