# Construction Master Pro Calc vs Pipe Flow Gas Pressure Drop

The clearest difference is monetization model: Pipe Flow Gas Pressure Drop at free against Construction Master Pro Calc's free with in-app purchases. Pipe Flow Gas Pressure Drop also leads on iOS requirement (11.0 vs 15.0). Construction Master Pro Calc's advantage is ratings volume (40K vs 13) and chart position (#44 vs unranked). On price, rating, update cadence and ads 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 Pipe Flow Gas Pressure Drop sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 4.8 for Construction Master Pro Calc against 4.8 for Pipe Flow Gas Pressure Drop. That said, the two scores are not equally well evidenced: Construction Master Pro Calc has 40K ratings behind it against 13, so its average is the more settled of the two.

Construction Master Pro Calc ships an update every 3 weeks, Pipe Flow Gas Pressure Drop fortnightly. The most recent releases landed on September 27, 2026 and September 3, 2026 respectively.

## The numbers

| Metric | Construction Master Pro Calc | Pipe Flow Gas Pressure Drop |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.8 (40K ratings)](https://appshunter.io/ios/app/construction-master-pro-calc/id370406446/reviews) | [4.8 (13 ratings)](https://appshunter.io/ios/app/pipe-flow-gas-pressure-drop/id1582666236/reviews) |
| Number of ratings | **40K** | 13 |
| Positive reviews | 60.1% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Fortnightly** |
| Monetization | Free with in-app purchases | **Free** |
| Best chart rank | **#44** | — |
| Size | 111 MB | 67 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) | [Pipe Flow Software](https://appshunter.io/developer/1193064957) |

## 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


### Pipe Flow Gas Pressure Drop

[App page](https://appshunter.io/ios/app/pipe-flow-gas-pressure-drop/id1582666236)

This app calculates gas pressure loss in pipes using various compressible flow equations. It automatically handles gas density changes and provides detailed results including Reynolds number and friction factors. Users can customize pipe materials, fittings, and gases from integrated or custom databases.

**Highlights:** Friction and fitting loss calculations, Multiple compressible flow equations, Automatic gas density handling, Customizable pipe, fitting, and gas data, Imperial and Metric unit support, Professional Excel and PDF reports, Results verification against published data

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pipe Flow Gas Pressure Drop | $4.99 | 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 Pipe Flow Gas Pressure Drop free?

Pipe Flow Gas Pressure Drop is free to download, with in-app purchases available.

### Which has better reviews, Construction Master Pro Calc or Pipe Flow Gas Pressure Drop?

Construction Master Pro Calc and Pipe Flow Gas Pressure Drop are both rated 4.8 out of 5 on the App Store, from 40K and 13 ratings respectively.

### Do Construction Master Pro Calc or Pipe Flow Gas Pressure Drop have ads?

Neither Construction Master Pro Calc nor Pipe Flow Gas Pressure Drop shows ads.

### Which is updated more often, Construction Master Pro Calc or Pipe Flow Gas Pressure Drop?

Construction Master Pro Calc ships an update every 3 weeks, and Pipe Flow Gas Pressure Drop fortnightly. Most recently, Construction Master Pro Calc was updated on September 27, 2026 and Pipe Flow Gas Pressure Drop on September 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.*