# VertexHCM vs Digiduct

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.

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.

## The numbers

| Metric | VertexHCM | Digiduct |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.6 (11 ratings)](https://appshunter.io/ios/app/digiduct/id6738926359/reviews)** |
| Number of ratings | — | **11** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 10 days** | Every 2 months |
| Monetization | — | Ad-supported |
| Size | 49 MB | 4 MB |
| Requires iOS | **15.0** | 26.2 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Viion](https://appshunter.io/developer/1477149153) | [Syska Hennessy Group](https://appshunter.io/developer/1782943081) |

## What reviewers say

### VertexHCM

[App page](https://appshunter.io/ios/app/vertexhcm/id6737475101)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### Digiduct

[App page](https://appshunter.io/ios/app/digiduct/id6738926359)

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.

**Highlights:** 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

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is VertexHCM free?

VertexHCM is free to download, with no in-app purchases.

### Is Digiduct free?

Digiduct is free to download, with no in-app purchases.

### Do VertexHCM or Digiduct have ads?

Neither VertexHCM nor Digiduct shows ads.

### Which is updated more often, VertexHCM or Digiduct?

VertexHCM ships an update every 10 days, and Digiduct every 2 months. Most recently, VertexHCM was updated on October 16, 2026 and Digiduct on October 16, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*