# Construction Master 5 Calc vs WatchGas

The clearest difference is in-app purchases: WatchGas at none against Construction Master 5 Calc's 6. WatchGas also leads on update cadence (every 3 weeks vs every 3 months) and rating (5.0 vs 4.8). Construction Master 5 Calc's advantage is ratings volume (13K vs 1) and chart position (#171 vs unranked). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Construction Master 5 Calc sells 2 in-app purchases, starting at $3.99 per month. WatchGas asks for nothing beyond the download.

WatchGas holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: Construction Master 5 Calc has 13K ratings behind it against 1, so its average is the more settled of the two.

Construction Master 5 Calc ships an update every 3 months, WatchGas every 3 weeks. The most recent releases landed on September 24, 2026 and September 6, 2026 respectively.

## The numbers

| Metric | Construction Master 5 Calc | WatchGas |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.8 (13K ratings)](https://appshunter.io/ios/app/construction-master-5-calc/id370412148/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/watchgas/id6479701347/reviews)** |
| Number of ratings | **13K** | 1 |
| Positive reviews | 67.7% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 3 weeks** |
| Monetization | Free with in-app purchases | **Free** |
| Best chart rank | **#171** | — |
| Size | 73 MB | 49 MB |
| Requires iOS | **15.0** | 15.5 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 12+ | 4+ |
| Developer | [Calculated Industries](https://appshunter.io/developer/370406449) | [WatchGas](https://appshunter.io/developer/1736959878) |

## What reviewers say

### Construction Master 5 Calc

[App page](https://appshunter.io/ios/app/construction-master-5-calc/id370412148)

**Currently charting:** #171 Top Grossing · Utilities (US App Store)

This app is a powerful feet-inch-fraction calculator designed for construction professionals. It offers advanced calculation capabilities for layouts, bids, and estimates, simplifying complex measurements and conversions for enhanced project accuracy and efficiency.

**Highlights:** Feet-inch-fraction calculations, Right angle and rafter calculations, Area and volume solutions, Board feet and cost per unit, Dimensional math and conversions, Save or email calculations, Context-sensitive help

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1 Month Full Access | $3.99 | per month |
| 1 Year Full Access | $34.99 | per year |

**What reviewers like**

- 👍 Convenient to have on phone
- 💡 Useful for construction work
- 🚀 Performs like physical calculator
- 👍 Helpful for calculations and estimates
- 👍 Great tool for framers and carpenters

**What reviewers complain about**

- 💰 Expensive subscription model
- 🤔 Prefer one-time purchase option
- 🤔 Subscription cost as much as physical calculator
- 🤔 Should allow trial before subscription
- 🐛 Issues with restoring purchases

**Reported bugs**

- App not working without internet connection
- Crashes or freezes on some devices
- Login/purchase issues when switching devices

**Requested features**

- Add Apple Watch support
- Offer one-time purchase option
- Improve compatibility with older devices
- Provide a free version with limited features


### WatchGas

[App page](https://appshunter.io/ios/app/watchgas/id6479701347)

This application allows users to manage and configure their WatchGas SST1 and SST4 devices. It provides essential tools for device setup and operational control.

**Highlights:** Device management, Device configuration, SST1 support, SST4 support, Compliance tools

**In-app purchases:** none


## Frequently asked questions

### Is Construction Master 5 Calc free?

Construction Master 5 Calc is free to download, with in-app purchases available.

### Is WatchGas free?

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

### Which has better reviews, Construction Master 5 Calc or WatchGas?

WatchGas is rated higher. Construction Master 5 Calc averages 4.8 out of 5 from 13K ratings, while WatchGas averages 5.0 from 1 ratings.

### Do Construction Master 5 Calc or WatchGas have ads?

Neither Construction Master 5 Calc nor WatchGas shows ads.

### Which is updated more often, Construction Master 5 Calc or WatchGas?

Construction Master 5 Calc ships an update every 3 months, and WatchGas every 3 weeks. Most recently, Construction Master 5 Calc was updated on September 24, 2026 and WatchGas on September 6, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*