# Construction Master Pro Calc vs Chaney SDS

The clearest difference is in-app purchases: Chaney SDS at none against Construction Master Pro Calc's 20. Chaney SDS also leads on rating (5.0 vs 4.8) and iOS requirement (11.0 vs 15.0). Construction Master Pro Calc's advantage is ratings volume (40K vs 1) and update cadence (every 3 weeks vs every 3 months). On price, ads 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. Chaney SDS asks for nothing beyond the download.

Chaney SDS holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: Construction Master Pro Calc has 40K ratings behind it against 1, so its average is the more settled of the two.

Construction Master Pro Calc ships an update every 3 weeks, Chaney SDS every 3 months. The most recent releases landed on October 2, 2026 and September 29, 2026 respectively.

## The numbers

| Metric | Construction Master Pro Calc | Chaney SDS |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.8 (40K ratings)](https://appshunter.io/ios/app/construction-master-pro-calc/id370406446/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/chaney-sds/id1207612465/reviews)** |
| Number of ratings | **40K** | 1 |
| Positive reviews | 60.1% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 3 months |
| Monetization | Free with in-app purchases | **Free** |
| Best chart rank | **#45** | — |
| Size | 111 MB | 4 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) | [Chaney Enterprises](https://appshunter.io/developer/476650027) |

## What reviewers say

### Construction Master Pro Calc

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

**Currently charting:** #45 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


### Chaney SDS

[App page](https://appshunter.io/ios/app/chaney-sds/id1207612465)

Access Safety Data Sheets (SDS) remotely for Chaney Enterprises. This utility app provides quick access to essential safety information for employees and stakeholders.

**Highlights:** Remote SDS compilation, Safety information access, Employee resources, Stakeholder information

**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 Chaney SDS free?

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

### Which has better reviews, Construction Master Pro Calc or Chaney SDS?

Chaney SDS is rated higher. Construction Master Pro Calc averages 4.8 out of 5 from 40K ratings, while Chaney SDS averages 5.0 from 1 ratings.

### Do Construction Master Pro Calc or Chaney SDS have ads?

Neither Construction Master Pro Calc nor Chaney SDS shows ads.

### Which is updated more often, Construction Master Pro Calc or Chaney SDS?

Construction Master Pro Calc ships an update every 3 weeks, and Chaney SDS every 3 months. Most recently, Construction Master Pro Calc was updated on October 2, 2026 and Chaney SDS on September 29, 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.*