# Construction Master Pro Calc vs Square Root Calculator SDG

Construction Master Pro Calc and Square Root Calculator SDG both sit at 4.8 stars, but that hides the real split: 100% of Square Root Calculator SDG's written reviews are positive against 60% of Construction Master Pro Calc's. Square Root Calculator SDG also leads on in-app purchases (none vs 20) and iOS requirement (11.0 vs 15.0). Construction Master Pro Calc's advantage is ads (none vs shown) and update cadence (every 3 weeks vs every 12 months). On price, rating and device support there is nothing between them.

Both are free to download. Construction Master Pro Calc sells 12 in-app purchases, starting at $3.69 per month. Square Root Calculator SDG asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 4.8 for Construction Master Pro Calc against 4.8 for Square Root Calculator SDG. That said, the two scores are not equally well evidenced: Construction Master Pro Calc has 40K ratings behind it against 4, so its average is the more settled of the two. Written reviews are what separate them: 60% of Construction Master Pro Calc's written reviews are positive against 100% of Square Root Calculator SDG's.

Construction Master Pro Calc ships an update every 3 weeks, Square Root Calculator SDG every 12 months. The most recent releases landed on October 15, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | Construction Master Pro Calc | Square Root Calculator SDG |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.8 (40K ratings)](https://appshunter.io/ios/app/construction-master-pro-calc/id370406446/reviews) | [4.8 (4 ratings)](https://appshunter.io/ios/app/square-root-calculator-sdg/id6741165200/reviews) |
| Number of ratings | **40K** | 4 |
| Positive reviews | 59.9% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | **Every 3 weeks** | Every 12 months |
| Monetization | Free with in-app purchases | **Ad-supported** |
| Best chart rank | **#44** | — |
| Size | 111 MB | 12 MB |
| Requires iOS | 15.0 | **11.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 4+ |
| Developer | [Calculated Industries](https://appshunter.io/developer/370406449) | [SDG CODE DOO NIS](https://appshunter.io/developer/1343251532) |

## What reviewers say

### Construction Master Pro Calc

[App page](https://appshunter.io/ios/app/construction-master-pro-calc/id370406446)

**Currently charting:** #44 Top Grossing · Utilities (US App Store)

This app is a powerful construction calculator designed for professionals working with dimensions. It offers a wide range of solutions for dimensional math, right angle calculations, area and volume, and special functions, helping to improve speed and accuracy in layouts, bids, and estimates.

**Highlights:** Dimensional math and conversions, Right angle and rafter calculations, Area and volume solutions, Full trigonometric functions, Built-in user's guide and help, Save and share calculations, Project notes and attachments

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

**In-app purchases (12)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1 Month Full Access | $3.69 | per month |
| 1 Month Full Access | $4.99 | per month |
| 1 Month Full Access | $4.99 | per month |
| 1 Month Full Access | $4.99 | per month |
| CMPro Full Access | $9.99 | per year |
| 6 Months Full Access | $19.99 | per 6 months |
| 1 Year Full Access | $19.99 | per year |
| 1 Year Full Access | $29.99 | per year |
| 1 Year Full Access | $39.99 | per year |
| 1 Year Full Access | $39.99 | per year |
| 1 Year Full Access | $39.99 | per year |
| 1 Year Full Access | $39.99 | per year |

**What reviewers like**

- 🚀 Convenient and always available
- ⚙️ Comprehensive construction calculations
- 💪 Industry-standard tool
- 🔍 Accurate and reliable
- 📱 Integrates well with mobile devices

**What reviewers complain about**

- 💰 Subscription model too expensive
- 🔒 Locks data behind subscription
- 🔄 Forced to re-purchase after device changes
- 🔍 Lacks full metric support
- 🔧 Occasional UI/UX issues

**Reported bugs**

- Crashes or freezes on certain devices
- Calculation errors in some scenarios
- Inconsistent behavior after updates

**Requested features**

- Add metric unit support
- Offer one-time purchase option
- Improve backup and data transfer
- Add more customization options
- Enhance overall user experience


### Square Root Calculator SDG

[App page](https://appshunter.io/ios/app/square-root-calculator-sdg/id6741165200)

This utility app provides a straightforward way to calculate the square root of any number. Its simple interface makes it easy to use for quick calculations.

**Highlights:** Calculate square roots, Easy to use interface, Quick calculations, Supports all numbers

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Construction Master Pro Calc free?

Construction Master Pro Calc is free to download, with in-app purchases available.

### Is Square Root Calculator SDG free?

Square Root Calculator SDG is free to download, with no in-app purchases.

### Which has better reviews, Construction Master Pro Calc or Square Root Calculator SDG?

Construction Master Pro Calc and Square Root Calculator SDG are both rated 4.8 out of 5 on the App Store, from 40K and 4 ratings respectively.

### Do Construction Master Pro Calc or Square Root Calculator SDG have ads?

Square Root Calculator SDG shows ads; Construction Master Pro Calc does not.

### Which is updated more often, Construction Master Pro Calc or Square Root Calculator SDG?

Construction Master Pro Calc ships an update every 3 weeks, and Square Root Calculator SDG every 12 months. Most recently, Construction Master Pro Calc was updated on October 15, 2026 and Square Root Calculator SDG on October 4, 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.*