VertexHCM vs Digiduct
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
VertexHCM
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Vertex App - Simplifying Attendance and Leave Management Key Features: Mark Attendance: Users can quickly and securely mark their attendance through the app. Access Attendance Records: View attendance history, including records from previous months and the current year, helping users stay informed about their work patterns. Leave Application & Tracking: Submit leave applications directly within the app and track their status in real-time. See whether applications are pending, approved, or declined.
Digiduct
This HVAC tool assists professionals with duct sizing calculations based on ASHRAE standards. It supports multiple duct shapes and offers intelligent features to ensure accurate and reliable designs for real-world scenarios.
- Duct sizing for rectangular, round, and flat oval ducts
- Customizable dimensions with locked values
- Duct location intelligence for context-aware sizing
- Calculations based on CFM, pressure drop, or velocity
- Alerts for exceeding pressure drop or velocity limits
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The Digiduct app is a powerful tool designed for HVAC professionals, supporting everything from design calculations to real-time field verification. Built utilizing the equations and recommendations from the ASHRAE Fundamentals – Duct Design chapter, it ensures your calculations are accurate and reliable, saving you time and reducing errors. Key Features: • Multiple Shape Sizing Options: Supports sizing for rectangular, round, and flat oval ducts, offering flexibility for various duct designs. • Customizable Dimensions: For rectangular and oval ducts, users can lock in one dimension, and the app calculates the other, ensuring precise results based on CFM, pressure drop due to friction, or velocity. • Duct Location Intelligence: offers the user predefined parameters to use as starting point and reference when selecting duct sizes so users at HVAC experience level can make confident selections. Why Choose Digiduct? Unlike other duct sizing tools, Digiduct goes above and beyond. It doesn’t just provide basic size outputs—it evaluates the location and context of your duct (high-pressure vs. low-pressure, shaft vs. plenum), alerting you if your selection exceeds maximum pressure drop or velocity limits. This added layer of intelligence ensures higher accuracy and gives users confidence that their sizing is optimal for the application. Get the assurance of precision with Digiduct—designed to meet the demands of real-world HVAC scenarios.
Screenshots
Verdict
The clearest difference is update cadence: VertexHCM at every 10 days against Digiduct's every 2 months. VertexHCM also leads on iOS requirement (15.0 vs 26.2). On price, ads, in-app purchases and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
VertexHCM ships an update every 10 days, Digiduct every 2 months. Both last shipped on October 16, 2026.
| Parameter | VertexHCM | Digiduct |
|---|---|---|
| Price | Free | Free |
| Rating | — | 4.6 (11 ratings) — better |
| Number of ratings | — | 11 — better |
| Update frequency | Every 10 days — better | Every 2 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Ad-supported |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 15.0 — better | 26.2 |
| Further details — not scored | ||
| Size | 49 MB | 4 MB |
| Age rating | 4+ | 4+ |
| Developer | Viion | Syska Hennessy Group |
In-app purchases
VertexHCM
No in-app purchases
Digiduct
No in-app purchases









