# AirMaxx Lite vs IHWAP Diagnostics

The clearest difference is rating: IHWAP Diagnostics at 5.0 against AirMaxx Lite's 4.4. AirMaxx Lite's advantage is update cadence (every 2 months vs every 5 months) and iOS requirement (9.3 vs 16.0). 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.

IHWAP Diagnostics holds the better App Store score, 5.0 against 4.4. Both are backed by a comparable volume of ratings — 7 and 5 respectively.

AirMaxx Lite ships an update every 2 months, IHWAP Diagnostics every 5 months. The most recent releases landed on October 9, 2026 and September 26, 2026 respectively.

## The numbers

| Metric | AirMaxx Lite | IHWAP Diagnostics |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.4 (7 ratings)](https://appshunter.io/ios/app/airmaxx-lite/id1319340072/reviews) | **[5.0 (5 ratings)](https://appshunter.io/ios/app/ihwap-diagnostics/id1618558493/reviews)** |
| Number of ratings | **7** | 5 |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 5 months |
| Monetization | Free | Free |
| Size | 23 MB | 75 MB |
| Requires iOS | **9.3** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [National Comfort Institute, Inc.](https://appshunter.io/developer/1097845247) | [Travis Jenkins](https://appshunter.io/developer/1618558495) |

## What reviewers say

### AirMaxx Lite

[App page](https://appshunter.io/ios/app/airmaxx-lite/id1319340072)

Quickly calculate HVAC system fan and static pressure performance. Input basic system information and two static pressure measurements to receive clear visual representations of system status. Includes tutorials and articles for guidance.

**Highlights:** Fan airflow performance calculation, Static pressure performance calculation, Visual system status representation, Input nameplate information, Two static pressure measurements, Includes tutorials and articles

**Features:** macOS Compatibility

**In-app purchases:** none


### 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


## Frequently asked questions

### Is AirMaxx Lite free?

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

### Is IHWAP Diagnostics free?

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

### Which has better reviews, AirMaxx Lite or IHWAP Diagnostics?

IHWAP Diagnostics is rated higher. AirMaxx Lite averages 4.4 out of 5 from 7 ratings, while IHWAP Diagnostics averages 5.0 from 5 ratings.

### Do AirMaxx Lite or IHWAP Diagnostics have ads?

Neither AirMaxx Lite nor IHWAP Diagnostics shows ads.

### Which is updated more often, AirMaxx Lite or IHWAP Diagnostics?

AirMaxx Lite ships an update every 2 months, and IHWAP Diagnostics every 5 months. Most recently, AirMaxx Lite was updated on October 9, 2026 and IHWAP Diagnostics on September 26, 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.*