# Pipe Trades Pro Calc vs CDSiPipe

Pipe Trades Pro Calc and CDSiPipe both sit at 4.8 stars, but that hides the real split: 100% of CDSiPipe's written reviews are positive against 43% of Pipe Trades Pro Calc's. CDSiPipe also leads on in-app purchases (none vs 6) and iOS requirement (9.0 vs 14.0). Pipe Trades Pro Calc's advantage is ratings volume (4.4K vs 1) and chart position (#146 vs unranked). On price, rating, update cadence and ads there is nothing between them.

Both are free to download. Pipe Trades Pro Calc sells 2 in-app purchases, starting at $4.99 per month. CDSiPipe asks for nothing beyond the download.

CDSiPipe holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: Pipe Trades Pro Calc has 4.4K ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 43% of Pipe Trades Pro Calc's written reviews are positive against 100% of CDSiPipe's.

Pipe Trades Pro Calc ships an update every 7 months, CDSiPipe every 4 months. The most recent releases landed on October 21, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | Pipe Trades Pro Calc | CDSiPipe |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.8 (4.4K ratings)](https://appshunter.io/ios/app/pipe-trades-pro-calc/id596142100/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/cdsipipe/id665877570/reviews)** |
| Number of ratings | **4.4K** | 1 |
| Positive reviews | 42.6% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 7 months | **Every 4 months** |
| Monetization | Free with in-app purchases | **Free** |
| Best chart rank | **#146** | — |
| Size | 51 MB | 315 MB |
| Requires iOS | 14.0 | **9.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 4+ |
| Developer | [Calculated Industries](https://appshunter.io/developer/370406449) | [Charles D. Sheehy, Inc.](https://appshunter.io/developer/665877574) |

## What reviewers say

### Pipe Trades Pro Calc

[App page](https://appshunter.io/ios/app/pipe-trades-pro-calc/id596142100)

**Currently charting:** #146 Top Grossing · Utilities (US App Store)

This app provides advanced calculation tools and comprehensive data for pipe trade professionals. It streamlines workflows for pipefitters, welders, and steamfitters with features for measurements, fluid dynamics, and material specifications. Designed for efficiency and accuracy, it works offline for on-site use.

**Highlights:** Advanced measurement calculations, Fluid dynamics and pressure analysis, Comprehensive pipe data access, Offline functionality, User-centric interface, Material and dimension options

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1 Month Full Access | $4.99 | per month |
| 1 Year Full Access | $39.99 | per year |

**What reviewers like**

- 🔢 Useful calculator tool
- 🧠 Helpful for pipe fitters and welders
- 📱 Convenient to have on mobile device
- 🔍 Accurate calculations

**What reviewers complain about**

- 💰 Subscription model is too expensive
- 🔒 Requires internet connection to verify subscription
- 🔄 Used to be a one-time purchase
- 🤔 Confusing transition from one-time to subscription

**Reported bugs**

- App freezes or stops working after updates
- Calculation errors with fractions
- Issues with reinstalling or transferring purchases

**Requested features**

- Ability to use app without subscription
- Support for larger pipe sizes
- Add a back/undo button
- Rotate screen orientation


### CDSiPipe

[App page](https://appshunter.io/ios/app/cdsipipe/id665877570)

This app serves as a comprehensive reference toolbox for process piping, HVAC, and MEP professionals. It provides detailed information on steel pipe and valve specifications, including dimensions, pressure ratings, coatings, and finishes. Users can quickly access data through an intuitive interface with picker wheels and drop-down menus.

**Highlights:** Steel pipe specifications (OD, ID, weight, volume, wall thickness), Valve pressure ratings and dimensions, Information on pipe coatings, finishes, and types, Explanations of valve types (Butterfly, Gate, Check, Globe, Ball), Glossaries of piping industry terms and abbreviations, FAQ sections for pipe and valve categories

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Pipe Trades Pro Calc free?

Pipe Trades Pro Calc is free to download, with in-app purchases available.

### Is CDSiPipe free?

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

### Which has better reviews, Pipe Trades Pro Calc or CDSiPipe?

CDSiPipe is rated higher. Pipe Trades Pro Calc averages 4.8 out of 5 from 4.4K ratings, while CDSiPipe averages 5.0 from 1 ratings.

### Do Pipe Trades Pro Calc or CDSiPipe have ads?

Neither Pipe Trades Pro Calc nor CDSiPipe shows ads.

### Which is updated more often, Pipe Trades Pro Calc or CDSiPipe?

Pipe Trades Pro Calc ships an update every 7 months, and CDSiPipe every 4 months. Most recently, Pipe Trades Pro Calc was updated on October 21, 2026 and CDSiPipe on October 8, 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.*