# Construction Calculator A1 vs Spinvoke

The clearest difference is ads: Spinvoke at none against Construction Calculator A1's shown. Construction Calculator A1's advantage is update cadence (every 3 weeks vs every 2 months) and device support (4 vs 2). On price and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Construction Calculator A1 ships an update every 3 weeks, Spinvoke every 2 months. The most recent releases landed on September 10, 2026 and September 19, 2026 respectively.

## The numbers

| Metric | Construction Calculator A1 | Spinvoke |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (23 ratings)](https://appshunter.io/ios/app/construction-calculator-a1/id1589484051/reviews)** | — |
| Number of ratings | **23** | — |
| Positive reviews | 66.7% of reviews | — |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | **Every 3 weeks** | Every 2 months |
| Monetization | Ad-supported | — |
| Size | 160 MB | 5 MB |
| Requires iOS | **15.0** | 18.6 |
| Devices | **iPhone, iPad, iPod, Apple Watch** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Binary And Bricks Pvt Ltd](https://appshunter.io/developer/1587170688) | [JOSEPH AARON SPEARS](https://appshunter.io/developer/1852489583) |

## What reviewers say

### 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


### Spinvoke

[App page](https://appshunter.io/ios/app/spinvoke/id6758634130)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Construction Calculator A1 free?

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

### Is Spinvoke free?

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

### Do Construction Calculator A1 or Spinvoke have ads?

Construction Calculator A1 shows ads; Spinvoke does not.

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

Construction Calculator A1 ships an update every 3 weeks, and Spinvoke every 2 months. Most recently, Construction Calculator A1 was updated on September 10, 2026 and Spinvoke on September 19, 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.*