# Construction Master Pro Calc vs Datum Tools

The clearest difference is update cadence: Datum Tools at weekly against Construction Master Pro Calc's every 3 weeks. Construction Master Pro Calc's advantage is chart position (#46 vs unranked). On price, ads, in-app purchases 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 and Datum Tools sells 2 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

Construction Master Pro Calc ships an update every 3 weeks, Datum Tools weekly. The most recent releases landed on October 1, 2026 and September 30, 2026 respectively.

## The numbers

| Metric | Construction Master Pro Calc | Datum Tools |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (40K ratings)](https://appshunter.io/ios/app/construction-master-pro-calc/id370406446/reviews)** | — |
| Number of ratings | **40K** | — |
| Positive reviews | 60.1% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Weekly** |
| Monetization | Free with in-app purchases | — |
| Best chart rank | **#46** | — |
| Size | 111 MB | 30 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 4+ |
| Developer | [Calculated Industries](https://appshunter.io/developer/370406449) | [JOSHUA ERICH PABST](https://appshunter.io/developer/1895651372) |

## What reviewers say

### Construction Master Pro Calc

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

**Currently charting:** #46 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


### Datum Tools

[App page](https://appshunter.io/ios/app/datum-tools/id6797541958)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Unlock | $2.99 | per month |
| Datum Pro Unlock | $19.99 | one-time |


## Frequently asked questions

### Is Construction Master Pro Calc free?

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

### Is Datum Tools free?

Datum Tools is free to download, with in-app purchases available.

### Do Construction Master Pro Calc or Datum Tools have ads?

Neither Construction Master Pro Calc nor Datum Tools shows ads.

### Which is updated more often, Construction Master Pro Calc or Datum Tools?

Construction Master Pro Calc ships an update every 3 weeks, and Datum Tools weekly. Most recently, Construction Master Pro Calc was updated on October 1, 2026 and Datum Tools on September 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.*