# UEi DTHA2 vs Digiduct

The clearest difference is rating: Digiduct at 4.6 against UEi DTHA2's 4.0. Digiduct also leads on update cadence (every 2 months vs every 7 months). UEi DTHA2's advantage is monetization model (free vs ad-supported) and iOS requirement (12.0 vs 26.2). On price, ratings volume, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Digiduct holds the better App Store score, 4.6 against 4.0. Both are backed by a comparable volume of ratings — 4 and 11 respectively.

UEi DTHA2 ships an update every 7 months, Digiduct every 2 months. The most recent releases landed on October 15, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | UEi DTHA2 | Digiduct |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.0 (4 ratings)](https://appshunter.io/ios/app/uei-dtha2/id1452986649/reviews) | **[4.6 (11 ratings)](https://appshunter.io/ios/app/digiduct/id6738926359/reviews)** |
| Number of ratings | 4 | **11** |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 7 months | **Every 2 months** |
| Monetization | **Free** | Ad-supported |
| Size | 17 MB | 4 MB |
| Requires iOS | **12.0** | 26.2 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Kane Asia Inc.](https://appshunter.io/developer/1542732944) | [Syska Hennessy Group](https://appshunter.io/developer/1782943081) |

## What reviewers say

### UEi DTHA2

[App page](https://appshunter.io/ios/app/uei-dtha2/id1452986649)

This app connects to a wireless adapter to measure airflow velocity, volumetric flow, temperature, and relative humidity. It allows adjustments for ducting and offers averaging options for readings.

**Highlights:** Measure airflow velocity, Measure volumetric flow, Measure temperature, Measure relative humidity, Adjust for ducting, Time or point averaging

**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 UEi DTHA2 free?

UEi DTHA2 is free to download, with no in-app purchases.

### Is Digiduct free?

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

### Which has better reviews, UEi DTHA2 or Digiduct?

Digiduct is rated higher. UEi DTHA2 averages 4.0 out of 5 from 4 ratings, while Digiduct averages 4.6 from 11 ratings.

### Do UEi DTHA2 or Digiduct have ads?

Neither UEi DTHA2 nor Digiduct shows ads.

### Which is updated more often, UEi DTHA2 or Digiduct?

UEi DTHA2 ships an update every 7 months, and Digiduct every 2 months. Most recently, UEi DTHA2 was updated on October 15, 2026 and Digiduct on October 16, 2026.

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