# Carpentry Formulator vs Construction Calculator A1

The clearest difference is rating: Construction Calculator A1 at 4.8 against Carpentry Formulator's 3.8. Construction Calculator A1 also leads on review sentiment (67% vs 25%) and in-app purchases (none vs 1). Carpentry Formulator's advantage is ads (none vs shown). On price there is nothing between them.

Both are free to download. Carpentry Formulator sells 1 one-off in-app purchase. Construction Calculator A1 asks for nothing beyond the download.

Construction Calculator A1 holds the better App Store score, 4.8 against 3.8. That said, the two scores are not equally well evidenced: Construction Calculator A1 has 26 ratings behind it against 4, so its average is the more settled of the two. Written reviews point the same way: 25% of Carpentry Formulator's written reviews are positive against 67% of Construction Calculator A1's.

Carpentry Formulator ships an update every 2 months, Construction Calculator A1 every 4 weeks. The most recent releases landed on October 6, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | Carpentry Formulator | Construction Calculator A1 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.8 (4 ratings)](https://appshunter.io/ios/app/carpentry-formulator/id305583131/reviews) | **[4.8 (26 ratings)](https://appshunter.io/ios/app/construction-calculator-a1/id1589484051/reviews)** |
| Number of ratings | 4 | **26** |
| Positive reviews | 25.0% of reviews | **66.7% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | Every 2 months | **Every 4 weeks** |
| Monetization | **Free** | Ad-supported |
| Size | 23 MB | 161 MB |
| Requires iOS | 18.6 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Historycentral.com](https://appshunter.io/developer/1744330560) | [Binary And Bricks Pvt Ltd](https://appshunter.io/developer/1587170688) |

## What reviewers say

### Carpentry Formulator

[App page](https://appshunter.io/ios/app/carpentry-formulator/id305583131)

This app provides over 150 formulas and dozens of conversions for carpenters and builders. It calculates loads on walls and headers, material quantities for projects, and dimensions for roofing and stairs. It also includes area and volume calculations for various shapes.

**Highlights:** Load calculations for walls and headers, Material quantity estimation (joists, studs, concrete), Roofing and stair dimension calculations, Area and volume formulas for geometric shapes, Dozens of unit conversion tools, Shareable calculation results

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Professional Features | $2.99 | one-time |


### Construction Calculator A1

[App page](https://appshunter.io/ios/app/construction-calculator-a1/id1589484051)

This app provides specialized calculators for construction professionals, including concrete, rebar, and area/volume calculations. It offers material quantity estimation, unit conversion, and professional features like BOQ export and project organization. Designed for contractors, builders, and engineers on job sites worldwide.

**Highlights:** Concrete material quantity calculation, Rebar bending schedule and weight calculation, Feet-inch arithmetic without decimal conversion, Area and volume calculations for 15+ shapes, Construction-specific unit conversions, Bill of Quantities (BOQ) export to PDF/Excel, Save and organize calculations by project

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

**In-app purchases:** none


## Frequently asked questions

### Is Carpentry Formulator free?

Carpentry Formulator is free to download, with in-app purchases available.

### Is Construction Calculator A1 free?

Construction Calculator A1 is free to download, with no in-app purchases.

### Which has better reviews, Carpentry Formulator or Construction Calculator A1?

Construction Calculator A1 is rated higher. Carpentry Formulator averages 3.8 out of 5 from 4 ratings, while Construction Calculator A1 averages 4.8 from 26 ratings.

### Do Carpentry Formulator or Construction Calculator A1 have ads?

Construction Calculator A1 shows ads; Carpentry Formulator does not.

### Which is updated more often, Carpentry Formulator or Construction Calculator A1?

Carpentry Formulator ships an update every 2 months, and Construction Calculator A1 every 4 weeks. Most recently, Carpentry Formulator was updated on October 6, 2026 and Construction Calculator A1 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.*