# CDSiPipe vs Piping Engineering Toolbox

The clearest difference is review sentiment: CDSiPipe at 100% against Piping Engineering Toolbox's 50%. CDSiPipe also leads on rating (5.0 vs 3.7) and in-app purchases (none vs 4). Piping Engineering Toolbox's advantage is ratings volume (9 vs 1). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Piping Engineering Toolbox sells 4 in-app purchases, starting at $1.99 per 7 days. CDSiPipe asks for nothing beyond the download.

CDSiPipe holds the better App Store score, 5.0 against 3.7. That said, the two scores are not equally well evidenced: Piping Engineering Toolbox has 9 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 100% of CDSiPipe's written reviews are positive against 50% of Piping Engineering Toolbox's.

CDSiPipe ships an update every 4 months, Piping Engineering Toolbox every 3 months. The most recent releases landed on September 22, 2026 and September 24, 2026 respectively.

## The numbers

| Metric | CDSiPipe | Piping Engineering Toolbox |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/cdsipipe/id665877570/reviews)** | [3.7 (9 ratings)](https://appshunter.io/ios/app/piping-engineering-toolbox/id6654914337/reviews) |
| Number of ratings | 1 | **9** |
| Positive reviews | **100.0% of reviews** | 50.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 3 months** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 315 MB | 61 MB |
| Requires iOS | **9.0** | 12.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Charles D. Sheehy, Inc.](https://appshunter.io/developer/665877574) | [Shital Gorasiya](https://appshunter.io/developer/1737199158) |

## What reviewers say

### 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


### Piping Engineering Toolbox

[App page](https://appshunter.io/ios/app/piping-engineering-toolbox/id6654914337)

This app provides piping engineers with essential tools, dimensions, and standards for design and analysis. It includes calculators, checklists, software shortcuts, and educational resources to streamline work and enhance knowledge.

**Highlights:** Pipe wall thickness calculator, Branch reinforcement calculator, Piping checklists, Fitting dimensions, Software shortcuts (AutoCAD, MicroStation), Piping standards references (ASME, ASTM), Industry blog and quizzes

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Premium | $1.99 | per 7 days |
| Monthly Premium | $3.99 | per month |
| Yearly Premium | $7.99 | per year |
| Lifetime Premium | $12.99 | one-time |


## Frequently asked questions

### Is CDSiPipe free?

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

### Is Piping Engineering Toolbox free?

Piping Engineering Toolbox is free to download, with in-app purchases available.

### Which has better reviews, CDSiPipe or Piping Engineering Toolbox?

CDSiPipe is rated higher. CDSiPipe averages 5.0 out of 5 from 1 ratings, while Piping Engineering Toolbox averages 3.7 from 9 ratings.

### Do CDSiPipe or Piping Engineering Toolbox have ads?

Neither CDSiPipe nor Piping Engineering Toolbox shows ads.

### Which is updated more often, CDSiPipe or Piping Engineering Toolbox?

CDSiPipe ships an update every 4 months, and Piping Engineering Toolbox every 3 months. Most recently, CDSiPipe was updated on September 22, 2026 and Piping Engineering Toolbox on September 24, 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.*