# Construction Calculator++ vs Wattson Pro

The clearest difference is price: Wattson Pro at Free against Construction Calculator++'s $0.99. Wattson Pro also leads on update cadence (every 4 days vs every 3 weeks). Construction Calculator++'s advantage is in-app purchases (none vs 1) and iOS requirement (13.0 vs 15.1). On ads and device support there is nothing between them.

Wattson Pro is free to download; Construction Calculator++ costs $0.99 up front. Wattson Pro sells 1 one-off in-app purchase. Construction Calculator++ asks for nothing beyond the download.

Construction Calculator++ ships an update every 3 weeks, Wattson Pro every 4 days. The most recent releases landed on October 14, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | Construction Calculator++ | Wattson Pro |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | **[4.2 (50 ratings)](https://appshunter.io/ios/app/construction-calculator-plus-plus/id749110889/reviews)** | — |
| Number of ratings | **50** | — |
| Positive reviews | 75.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 4 days** |
| Monetization | Paid | — |
| Size | 6 MB | 44 MB |
| Requires iOS | **13.0** | 15.1 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Dogahe](https://appshunter.io/developer/468657946) | [Marin Martinovic](https://appshunter.io/developer/1871459610) |

## What reviewers say

### Construction Calculator++

[App page](https://appshunter.io/ios/app/construction-calculator-plus-plus/id749110889)

This app provides specialized calculations for construction projects, including volume, area, and material estimation. It offers tools for unit conversions, rafter calculations, and circle/arc measurements, aiding in accurate project planning and execution.

**Highlights:** Length-Width-Height calculations for area, volume, and wall area, Material estimation for bricks, blocks, pavers, and tiles, Drywall sheet quantity calculation, Linear measure addition, subtraction, and conversion, Rafter calculations for common, hip, valley, and jack rafters, Circle and arc parameter calculations with visual plots

**Features:** Vision Pro support

**In-app purchases:** none


### Wattson Pro

[App page](https://appshunter.io/ios/app/wattson-pro/id6760766587)

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Wattson Pro | $5.99 | one-time |


## Frequently asked questions

### Is Construction Calculator++ free?

Construction Calculator++ costs $0.99, with no in-app purchases.

### Is Wattson Pro free?

Wattson Pro is free to download, with in-app purchases available.

### Do Construction Calculator++ or Wattson Pro have ads?

Neither Construction Calculator++ nor Wattson Pro shows ads.

### Which is updated more often, Construction Calculator++ or Wattson Pro?

Construction Calculator++ ships an update every 3 weeks, and Wattson Pro every 4 days. Most recently, Construction Calculator++ was updated on October 14, 2026 and Wattson Pro on October 3, 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.*