# IHWAP Diagnostics vs PT Ductulator

The clearest difference is iOS requirement: IHWAP Diagnostics at 16.0 against PT Ductulator's 26.1. 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.

## The numbers

| Metric | IHWAP Diagnostics | PT Ductulator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (5 ratings)](https://appshunter.io/ios/app/ihwap-diagnostics/id1618558493/reviews)** | — |
| Number of ratings | **5** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 months | — |
| Monetization | Free | — |
| Size | 75 MB | 5 MB |
| Requires iOS | **16.0** | 26.1 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Travis Jenkins](https://appshunter.io/developer/1618558495) | [Randall McGrath](https://appshunter.io/developer/1816832117) |

## What reviewers say

### IHWAP Diagnostics

[App page](https://appshunter.io/ios/app/ihwap-diagnostics/id1618558493)

This application assists with home weatherization by quantifying air leakage, calculating ventilation needs, and assessing duct system pressure against program standards. It helps prioritize air sealing and ensures compliance with energy efficiency guidelines.

**Highlights:** Zone Pressure Diagnostics (ZPD), Total External Static Pressure (TESP) calculation, ASHRAE ventilation requirements, Leakage reduction potential estimation, ENERGY STAR compliance checks

**Features:** macOS Compatibility

**In-app purchases:** none


### PT Ductulator

[App page](https://appshunter.io/ios/app/pt-ductulator/id6755953588)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is IHWAP Diagnostics free?

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

### Is PT Ductulator free?

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

### Do IHWAP Diagnostics or PT Ductulator have ads?

Neither IHWAP Diagnostics nor PT Ductulator shows ads.

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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.*