BluVac vs IHWAP Diagnostics
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
BluVac
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.
- Bluetooth gauge connection
- Timed evacuation tests
- Decay test functionality
- Detailed results viewing
- mQ Assist integration
- Pro Report feature
- Connect up to 6 gauges
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Easily connect and perform detailed system evacuations with your BluVac+ Pro, BluVac+ LTE, and BluVac+ Micro vacuum gauges via Bluetooth. With the BluVac+ Pro, you can perform timed evacuation and decay tests, set target times, and view detailed results. For BluVac+ LTE and Micro, quickly record and display essential data. The app now features mQ Assist integration for evacuation guidance, an improved interface, and geolocation tracking for enhanced screenshots. Additional upgrades include a new Pro Report feature, the ability to connect up to 6 BluVac gauges simultaneously, and the option to rename gauges by their function (e.g., Pump, Core Tool, System). Plus, the decay test will now only start once the evacuation rate hits zero.
IHWAP Diagnostics
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.
- Zone Pressure Diagnostics (ZPD)
- Total External Static Pressure (TESP) calculation
- ASHRAE ventilation requirements
- Leakage reduction potential estimation
- ENERGY STAR compliance checks
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Illinois Home Weatherization Assistance Program (IHWAP) Diagnostics application for the University of Illinois. This app is the product of a collaboration between the Indoor Climate Research & Training Center’s Senior Weatherization Trainer, Nate Price, and me. The Zone Pressure Diagnostics (ZPD) function will quantify the connection between the house and a zone and between that zone and the outdoors. It will also estimate the total leakage reduction potential in the zone, which should assist with prioritizing air sealing measures. The Total External Static Pressure (TESP) function will calculate total pressure and the pressure caused by the various components of a duct system and compare them to Illinois Home Weatherization Assistance Program (IHWAP) standards for recommended replacement options. The American Society of Heating and Air-Conditioning Engineers (ASHRAE) function will calculate home ventilation requirements ensuring proper pollutant control and ENERGY STAR compliance.
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | BluVac | IHWAP Diagnostics |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (2 ratings) | 5.0 (5 ratings) |
| Positive reviews | 36.4% of reviews | 100.0% of reviews — better |
| Number of ratings | 2 | 5 — better |
| Update frequency | Every 2 months — better | Every 5 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 11.0 — better | 16.0 |
| Further details — not scored | ||
| Size | 25 MB | 75 MB |
| Age rating | 4+ | 4+ |
| Developer | Manifold Cloud Services Ltd. | Travis Jenkins |
Customer experience
BluVac
IHWAP Diagnostics
In-app purchases
BluVac
No in-app purchases
IHWAP Diagnostics
No in-app purchases
Questions
Is BluVac free?
Is IHWAP Diagnostics free?
Which has better reviews, BluVac or IHWAP Diagnostics?
Do BluVac or IHWAP Diagnostics have ads?
Which is updated more often, BluVac or IHWAP Diagnostics?
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