# CPS Link vs IHWAP Diagnostics

The clearest difference is review sentiment: IHWAP Diagnostics at 100% against CPS Link's 13%. IHWAP Diagnostics also leads on rating (5.0 vs 1.9). CPS Link's advantage is update cadence (every 3 weeks vs every 5 months) and ratings volume (154 vs 5). On price, ads, in-app purchases and monetization model 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 1.9. That said, the two scores are not equally well evidenced: CPS Link has 154 ratings behind it against 5, so its average is the more settled of the two. Written reviews point the same way: 13% of CPS Link's written reviews are positive against 100% of IHWAP Diagnostics's.

CPS Link ships an update every 3 weeks, IHWAP Diagnostics every 5 months. The most recent releases landed on September 27, 2026 and June 5, 2026 respectively.

## The numbers

| Metric | CPS Link | IHWAP Diagnostics |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [1.9 (154 ratings)](https://appshunter.io/ios/app/cps-link/id1185092042/reviews) | **[5.0 (5 ratings)](https://appshunter.io/ios/app/ihwap-diagnostics/id1618558493/reviews)** |
| Number of ratings | **154** | 5 |
| Positive reviews | 13.3% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 5 months |
| Monetization | Free | Free |
| Size | 85 MB | 75 MB |
| Requires iOS | **11.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [CPS Products, Inc.](https://appshunter.io/developer/945771072) | [Travis Jenkins](https://appshunter.io/developer/1618558495) |

## What reviewers say

### CPS Link

[App page](https://appshunter.io/ios/app/cps-link/id1185092042)

Connect multiple wireless sensors to create a comprehensive diagnostic measurement system. Perform quick single measurements or complex full system diagnostics with analytics. Expand your system over time with new sensor solutions.

**Highlights:** Connect multiple wireless sensors, Comprehensive diagnostic measurement system, Perform quick measurements, Complex system diagnostics with analytics, Expandable sensor system

**In-app purchases:** none

**What reviewers like**

- 👍 Easy to use
- 🚀 Worked well initially
- 💡 Useful features

**What reviewers complain about**

- 🐛 Frequent crashes
- 🔌 Connectivity issues
- ⚠️ Unreliable performance
- 💸 Expensive for poor quality

**Reported bugs**

- App crashes on launch
- Bluetooth connectivity problems
- Inconsistent readings and measurements
- Incompatible with newer iOS versions

**Requested features**

- Update app to fix compatibility issues
- Improve customer support and responsiveness
- Provide better documentation and troubleshooting guides


### 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 CPS Link free?

CPS Link 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, CPS Link or IHWAP Diagnostics?

IHWAP Diagnostics is rated higher. CPS Link averages 1.9 out of 5 from 154 ratings, while IHWAP Diagnostics averages 5.0 from 5 ratings.

### Do CPS Link or IHWAP Diagnostics have ads?

Neither CPS Link nor IHWAP Diagnostics shows ads.

### Which is updated more often, CPS Link or IHWAP Diagnostics?

CPS Link ships an update every 3 weeks, and IHWAP Diagnostics every 5 months. Most recently, CPS Link was updated on September 27, 2026 and IHWAP Diagnostics on June 5, 2026.

---

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