# Open as App vs IHWAP Diagnostics

The clearest difference is rating: IHWAP Diagnostics at 5.0 against Open as App's 4.3. IHWAP Diagnostics also leads on monetization model (free vs freemium) and review sentiment (100% vs 78%). Open as App's advantage is update cadence (every 5 weeks vs every 5 months) and ratings volume (37 vs 5). 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.

IHWAP Diagnostics holds the better App Store score, 5.0 against 4.3. That said, the two scores are not equally well evidenced: Open as App has 37 ratings behind it against 5, so its average is the more settled of the two. Written reviews point the same way: 78% of Open as App's written reviews are positive against 100% of IHWAP Diagnostics's.

Open as App ships an update every 5 weeks, IHWAP Diagnostics every 5 months. The most recent releases landed on June 11, 2026 and June 5, 2026 respectively.

## The numbers

| Metric | Open as App | IHWAP Diagnostics |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.3 (37 ratings)](https://appshunter.io/ios/app/open-as-app/id1084483622/reviews) | **[5.0 (5 ratings)](https://appshunter.io/ios/app/ihwap-diagnostics/id1618558493/reviews)** |
| Number of ratings | **37** | 5 |
| Positive reviews | 77.8% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 5 weeks** | Every 5 months |
| Monetization | Freemium | **Free** |
| Size | 145 MB | 75 MB |
| Requires iOS | **10.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Open as App GmbH](https://appshunter.io/developer/1084483621) | [Travis Jenkins](https://appshunter.io/developer/1618558495) |

## What reviewers say

### Open as App

[App page](https://appshunter.io/ios/app/open-as-app/id1084483622)

Transform spreadsheets into powerful, customizable mobile and web apps for teams. Digitize processes, improve speed, and reduce errors with a no-code solution. Build and share apps instantly, working offline and in real-time across platforms.

**Highlights:** Spreadsheet to app conversion, No-code app builder, Offline app access, Real-time collaboration, Customizable app templates, Cross-platform compatibility

**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 Open as App free?

Open as App 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, Open as App or IHWAP Diagnostics?

IHWAP Diagnostics is rated higher. Open as App averages 4.3 out of 5 from 37 ratings, while IHWAP Diagnostics averages 5.0 from 5 ratings.

### Do Open as App or IHWAP Diagnostics have ads?

Neither Open as App nor IHWAP Diagnostics shows ads.

### Which is updated more often, Open as App or IHWAP Diagnostics?

Open as App ships an update every 5 weeks, and IHWAP Diagnostics every 5 months. Most recently, Open as App was updated on June 11, 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.*