# Construction Calculator A1 vs ONE VANS

The clearest difference is in-app purchases: ONE VANS at none against Construction Calculator A1's 6. ONE VANS also leads on ads (none vs shown) and update cadence (every 9 days vs monthly). On price and device support there is nothing between them.

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

Construction Calculator A1 ships an update monthly, ONE VANS every 9 days. The most recent releases landed on November 7, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | Construction Calculator A1 | ONE VANS |
| --- | --- | --- |
| 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 | **No** |
| Update frequency | Monthly | **Every 9 days** |
| Monetization | Free with in-app purchases | — |
| Size | 182 MB | 38 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | **iPhone, iPad, iPod, Apple Watch** | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Binary And Bricks Pvt Ltd](https://appshunter.io/developer/1587170688) | [AKASHSINH C PARMAR](https://appshunter.io/developer/1825071309) |

## 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 |


### ONE VANS

[App page](https://appshunter.io/ios/app/one-vans/id6748301728)

**Features:** macOS Compatibility

**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 ONE VANS free?

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

### Do Construction Calculator A1 or ONE VANS have ads?

Construction Calculator A1 shows ads; ONE VANS does not.

### Which is updated more often, Construction Calculator A1 or ONE VANS?

Construction Calculator A1 ships an update monthly, and ONE VANS every 9 days. Most recently, Construction Calculator A1 was updated on November 7, 2026 and ONE VANS on October 30, 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.*