# HVAC Load Plus vs Walabot DIY

The clearest difference is price: Walabot DIY at Free against HVAC Load Plus's $24.99. Walabot DIY also leads on rating (4.2 vs 2.8) and in-app purchases (none vs 1). HVAC Load Plus's advantage is iOS requirement (13.0 vs 15.6). On ads and device support there is nothing between them.

Walabot DIY is free to download; HVAC Load Plus costs $24.99 up front. HVAC Load Plus sells 1 one-off in-app purchase. Walabot DIY asks for nothing beyond the download.

Walabot DIY holds the better App Store score, 4.2 against 2.8. That said, the two scores are not equally well evidenced: Walabot DIY has 320 ratings behind it against 5, so its average is the more settled of the two. Written reviews point the same way: 60% of HVAC Load Plus's written reviews are positive against 78% of Walabot DIY's.

HVAC Load Plus ships an update every 9 months, Walabot DIY every 3 weeks. The most recent releases landed on November 1, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | HVAC Load Plus | Walabot DIY |
| --- | --- | --- |
| Price | $24.99 | **Free** |
| Rating | [2.8 (5 ratings)](https://appshunter.io/ios/app/hvac-load-plus/id381608273/reviews) | **[4.2 (320 ratings)](https://appshunter.io/ios/app/walabot-diy/id1474817785/reviews)** |
| Number of ratings | 5 | **320** |
| Positive reviews | 60.0% of reviews | **78.5% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 9 months | **Every 3 weeks** |
| Monetization | Paid | **Free** |
| Size | 18 MB | 77 MB |
| Requires iOS | **13.0** | 15.6 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | +4 | 17+ |
| Developer | [Carmel Software Corporation](https://appshunter.io/developer/317970398) | [Vayyar Imaging LTD](https://appshunter.io/developer/1437493062) |

## What reviewers say

### HVAC Load Plus

[App page](https://appshunter.io/ios/app/hvac-load-plus/id381608273)

Perform detailed heating and cooling load calculations for buildings in the field using your iPhone. Access a vast weather database and construction data to generate comprehensive reports that can be emailed or exported to spreadsheets.

**Highlights:** Detailed heating and cooling load calculations, 1000+ city weather database, Extensive construction type data, Unlimited project creation and storage, Comprehensive load breakdown reports, Emailable HTML reports with spreadsheet attachments, Company information display on reports

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| HVAC Equipment Locator | $9.99 | one-time |


### Walabot DIY

[App page](https://appshunter.io/ios/app/walabot-diy/id1474817785)

Visualize the inside of your walls with this device and app combination. It acts like an X-ray, locating studs, pipes, and wires up to 4 inches deep. Ideal for confident drilling and renovation projects.

**Highlights:** See through walls, Locate studs, Detect pipes, Find wires, Works on drywall, Detects up to 4 inches deep

**Features:** Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 🚀 Accurate stud and object detection
- 👍 Helpful for DIY projects
- 🔍 Ability to see inside walls
- 💡 Innovative technology
- 🎯 Pinpoints stud locations

**What reviewers complain about**

- 🐛 Connectivity issues
- 🔄 Frequent recalibration required
- 🔧 Needs additional accessories for full functionality
- 📱 Inconvenient to use with phone

**Reported bugs**

- App crashes or disconnects frequently
- Inaccurate readings or missed objects
- Compatibility issues with newer phones

**Requested features**

- Integrated display instead of phone app
- Improved calibration process
- Compatibility with more wall types
- Automatic stud detection


## Frequently asked questions

### Is HVAC Load Plus free?

HVAC Load Plus costs $24.99, and also offers in-app purchases.

### Is Walabot DIY free?

Walabot DIY is free to download, with no in-app purchases.

### Which has better reviews, HVAC Load Plus or Walabot DIY?

Walabot DIY is rated higher. HVAC Load Plus averages 2.8 out of 5 from 5 ratings, while Walabot DIY averages 4.2 from 320 ratings.

### Do HVAC Load Plus or Walabot DIY have ads?

Neither HVAC Load Plus nor Walabot DIY shows ads.

### Which is updated more often, HVAC Load Plus or Walabot DIY?

HVAC Load Plus ships an update every 9 months, and Walabot DIY every 3 weeks. Most recently, HVAC Load Plus was updated on November 1, 2026 and Walabot DIY on November 3, 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.*