# HVAC Load Plus vs Shapr 3D CAD modeling

The clearest difference is price: Shapr 3D CAD modeling at Free against HVAC Load Plus's $24.99. Shapr 3D CAD modeling also leads on rating (4.7 vs 2.8) and update cadence (every 5 days vs every 9 months). HVAC Load Plus's advantage is iOS requirement (13.0 vs 17.0). On review sentiment, ads and in-app purchases there is nothing between them.

Shapr 3D CAD modeling is free to download; HVAC Load Plus costs $24.99 up front. HVAC Load Plus sells 1 one-off in-app purchase and Shapr 3D CAD modeling sells 6 in-app purchases, starting at $32.99 per month. Whichever you choose, the download price is not the number that matters.

Shapr 3D CAD modeling holds the better App Store score, 4.7 against 2.8. That said, the two scores are not equally well evidenced: Shapr 3D CAD modeling has 34K ratings behind it against 5, so its average is the more settled of the two. Written reviews complicate that: 60% of HVAC Load Plus's written reviews are positive against 52% of Shapr 3D CAD modeling's, so the app with the better star average is not the one people write more warmly about.

HVAC Load Plus ships an update every 9 months, Shapr 3D CAD modeling every 5 days. The most recent releases landed on November 1, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | HVAC Load Plus | Shapr 3D CAD modeling |
| --- | --- | --- |
| Price | $24.99 | **Free** |
| Rating | [2.8 (5 ratings)](https://appshunter.io/ios/app/hvac-load-plus/id381608273/reviews) | **[4.7 (34K ratings)](https://appshunter.io/ios/app/shapr-3d-cad-modeling/id1091675654/reviews)** |
| Number of ratings | 5 | **34K** |
| Positive reviews | **60.0% of reviews** | 52.4% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 9 months | **Every 5 days** |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 18 MB | 1.7 GB |
| Requires iOS | **13.0** | 17.0 |
| Devices | iPhone, iPod | **iPhone, iPad, Mac, Vision Pro** |
| Age rating | +4 | 4+ |
| Developer | [Carmel Software Corporation](https://appshunter.io/developer/317970398) | [Shapr3D Zrt](https://appshunter.io/developer/1091675653) |

## 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 |


### Shapr 3D CAD modeling

[App page](https://appshunter.io/ios/app/shapr-3d-cad-modeling/id1091675654)

Design and collaborate on 3D models and drawings from any device, even offline. This intuitive CAD tool offers a clutter-free interface and real-time 3D renders in AR for seamless visual communication. Export and import a wide range of file formats for a complete design-to-manufacturing workflow.

**Highlights:** Multidevice and offline capability, Adaptive, clutter-free user interface, Real-time 3D renders in AR, Extensive import/export file format support, Output 2D Drawings, Design-driven collaboration

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Solo Subscription | $32.99 | per month |
| Pro Subscription | $37.99 | per month |
| Business Subscription | $59.99 | per month |
| Solo Subscription | $249.99 | per year |
| Pro Subscription | $299.99 | per year |
| Business Subscription | $499.99 | per year |

**What reviewers like**

- 🚀 Super easy to use
- 👍 Intuitive interface
- 🚀 Powerful features
- 👍 Great for beginners
- 👍 Excellent tutorials

**What reviewers complain about**

- 💰 Expensive subscription
- 💰 Pricing not suitable for hobbyists
- 🔒 Limited free version
- 🐛 Occasional bugs and crashes
- 👎 Navigation and controls could be improved

**Reported bugs**

- Unreliable performance after recent updates
- Difficulty deleting or modifying existing designs
- Inconsistent behavior when using the Apple Pencil

**Requested features**

- Add more affordable pricing tiers for hobbyists
- Improve undo/redo functionality
- Implement better file management and organization
- Add support for importing/exporting more file formats
- Enhance parametric modeling capabilities


## Frequently asked questions

### Is HVAC Load Plus free?

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

### Is Shapr 3D CAD modeling free?

Shapr 3D CAD modeling is free to download, with in-app purchases available.

### Which has better reviews, HVAC Load Plus or Shapr 3D CAD modeling?

Shapr 3D CAD modeling is rated higher. HVAC Load Plus averages 2.8 out of 5 from 5 ratings, while Shapr 3D CAD modeling averages 4.7 from 34K ratings.

### Do HVAC Load Plus or Shapr 3D CAD modeling have ads?

Neither HVAC Load Plus nor Shapr 3D CAD modeling shows ads.

### Which is updated more often, HVAC Load Plus or Shapr 3D CAD modeling?

HVAC Load Plus ships an update every 9 months, and Shapr 3D CAD modeling every 5 days. Most recently, HVAC Load Plus was updated on November 1, 2026 and Shapr 3D CAD modeling on November 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.*