# Construction Calculator A1 vs GreystoneInfra

The clearest difference is in-app purchases: GreystoneInfra at none against Construction Calculator A1's 6. GreystoneInfra also leads on iOS requirement (12.4 vs 15.0). Construction Calculator A1's advantage is device support. On price there is nothing between them.

Both are free to download. Construction Calculator A1 sells 6 in-app purchases, starting at $2.99 per month. GreystoneInfra asks for nothing beyond the download.

## The numbers

| Metric | Construction Calculator A1 | GreystoneInfra |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (29 ratings)](https://appshunter.io/ios/app/construction-calculator-a1/id1589484051/reviews)** | — |
| Number of ratings | **29** | — |
| Positive reviews | 66.7% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | — |
| Update frequency | Monthly | — |
| Monetization | Free with in-app purchases | — |
| Size | 182 MB | 20 MB |
| Requires iOS | 15.0 | **12.4** |
| Devices | **iPhone, iPad, iPod, Apple Watch** | — |
| Age rating | 4+ | 17+ |
| Developer | [Binary And Bricks Pvt Ltd](https://appshunter.io/developer/1587170688) | [MARKS DZYN PRIVATE LIMITED](https://appshunter.io/developer/1615364323) |

## What reviewers say

### Construction Calculator A1

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

This comprehensive tool offers over 500 construction calculators, from basic material quantities to complex bills of quantities. It generates automatic drawings, manages material prices, and provides learning resources for civil engineers and contractors.

**Highlights:** 500+ construction calculators, Concrete, rebar, and steel calculations, Feet-inch calculator, Bill of Quantities (BOQ), Automatic drawings, Material price library, Unit converter

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

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro access monthly subscription | $2.99 | per month |
| Pro access yearly subscription | $24.99 | per year |
| 100 AI Credits | $0.99 | one-time |
| 500 AI credits | $3.99 | one-time |
| 500 AI credits | $9.99 | one-time |
| Lifetime Access | $39.99 | one-time |


### GreystoneInfra

[App page](https://appshunter.io/ios/app/greystoneinfra/id6450706438)

**In-app purchases:** none


## Frequently asked questions

### Is Construction Calculator A1 free?

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

### Is GreystoneInfra free?

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

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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.*