# BluVac vs IHWAP Diagnostics

BluVac and IHWAP Diagnostics both sit at 5.0 stars, but that hides the real split: 100% of IHWAP Diagnostics's written reviews are positive against 36% of BluVac's. BluVac's advantage is update cadence (every 2 months vs every 5 months) and iOS requirement (11.0 vs 16.0). On price, rating, ratings volume and ads there is nothing between them.

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

On the App Store both sit at effectively the same score — 5.0 for BluVac against 5.0 for IHWAP Diagnostics. Both are backed by a comparable volume of ratings — 2 and 5 respectively. Written reviews are what separate them: 36% of BluVac's written reviews are positive against 100% of IHWAP Diagnostics's.

BluVac ships an update every 2 months, IHWAP Diagnostics every 5 months. The most recent releases landed on September 9, 2026 and June 5, 2026 respectively.

## The numbers

| Metric | BluVac | IHWAP Diagnostics |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (2 ratings)](https://appshunter.io/ios/app/bluvac/id1227222428/reviews) | [5.0 (5 ratings)](https://appshunter.io/ios/app/ihwap-diagnostics/id1618558493/reviews) |
| Number of ratings | 2 | **5** |
| Positive reviews | 36.4% of 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 | 25 MB | 75 MB |
| Requires iOS | **11.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Manifold Cloud Services Ltd.](https://appshunter.io/developer/1227222427) | [Travis Jenkins](https://appshunter.io/developer/1618558495) |

## What reviewers say

### BluVac

[App page](https://appshunter.io/ios/app/bluvac/id1227222428)

Connect to compatible vacuum gauges via Bluetooth to perform detailed system evacuations. Features timed tests, decay tests, and data recording. Offers advanced reporting, multiple gauge connections, and geolocation for enhanced screenshots.

**Highlights:** Bluetooth gauge connection, Timed evacuation tests, Decay test functionality, Detailed results viewing, mQ Assist integration, Pro Report feature, Connect up to 6 gauges

**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 BluVac free?

BluVac 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, BluVac or IHWAP Diagnostics?

BluVac and IHWAP Diagnostics are both rated 5.0 out of 5 on the App Store, from 2 and 5 ratings respectively.

### Do BluVac or IHWAP Diagnostics have ads?

Neither BluVac nor IHWAP Diagnostics shows ads.

### Which is updated more often, BluVac or IHWAP Diagnostics?

BluVac ships an update every 2 months, and IHWAP Diagnostics every 5 months. Most recently, BluVac was updated on September 9, 2026 and IHWAP Diagnostics on June 5, 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.*