# EngiCalc vs Construction Expert A1 PRO

The clearest difference is in-app purchases: EngiCalc at none against Construction Expert A1 PRO's 3. EngiCalc also leads on update cadence (every 3 days vs fortnightly). Construction Expert A1 PRO's advantage is device support (4 vs 2). On price, rating, review sentiment and ratings volume there is nothing between them.

Both are free to download. Construction Expert A1 PRO sells 3 in-app purchases, starting at $2.99 per month. EngiCalc asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for EngiCalc against 5.0 for Construction Expert A1 PRO. Both are backed by a comparable volume of ratings — 2 and 2 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

EngiCalc ships an update every 3 days, Construction Expert A1 PRO fortnightly. The most recent releases landed on October 7, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | EngiCalc | Construction Expert A1 PRO |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (2 ratings)](https://appshunter.io/ios/app/engicalc/id6742305878/reviews) | [5.0 (2 ratings)](https://appshunter.io/ios/app/construction-expert-a1-pro/id6757102187/reviews) |
| Number of ratings | 2 | 2 |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 3 days** | Fortnightly |
| Monetization | **Free** | Free with in-app purchases |
| Size | 96 MB | 76 MB |
| Requires iOS | 15.6 | **15.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Joshua Williams](https://appshunter.io/developer/1797613871) | [Binary And Bricks Pvt Ltd](https://appshunter.io/developer/1587170688) |

## What reviewers say

### EngiCalc

[App page](https://appshunter.io/ios/app/engicalc/id6742305878)

This app provides specialized calculation tools for construction professionals. It helps optimize material usage, estimate quantities, and generate precise dimensions for various building elements like concrete pours, masonry, stairs, rafters, and roofing.

**Highlights:** Concrete material optimization, Masonry quantity estimation, Effortless stair dimension generation, Rafter length and angle calculation, Roofing material estimation

**Features:** macOS Compatibility

**In-app purchases:** none


### Construction Expert A1 PRO

[App page](https://appshunter.io/ios/app/construction-expert-a1-pro/id6757102187)

This app is a comprehensive construction calculator designed for professionals. It offers advanced calculations for framing, stair layout, trade-specific needs, and material estimation, replacing the need for expensive hardware calculators.

**Highlights:** Feet-inch-fraction math, Right angle and roof framing, Stair layout calculations, Trade-specific calculators (Electrical, Plumbing, HVAC), Area and volume calculations for 57 shapes, Material estimation tools, Project management and export options

**Features:** macOS Compatibility, Family Sharing, Apple Watch app, Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Construction Expert Monthly Sub | $2.99 | per month |
| Construction Expert Yearly | $14.99 | per year |
| Construction Expert Lifetime Access | $24.99 | one-time |


## Frequently asked questions

### Is EngiCalc free?

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

### Is Construction Expert A1 PRO free?

Construction Expert A1 PRO is free to download, with in-app purchases available.

### Which has better reviews, EngiCalc or Construction Expert A1 PRO?

EngiCalc and Construction Expert A1 PRO are both rated 5.0 out of 5 on the App Store, from 2 and 2 ratings respectively.

### Do EngiCalc or Construction Expert A1 PRO have ads?

Neither EngiCalc nor Construction Expert A1 PRO shows ads.

### Which is updated more often, EngiCalc or Construction Expert A1 PRO?

EngiCalc ships an update every 3 days, and Construction Expert A1 PRO fortnightly. Most recently, EngiCalc was updated on October 7, 2026 and Construction Expert A1 PRO on October 15, 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.*