# CDSiPipe vs Pipe Fitting & ASME Toolbox

CDSiPipe and Pipe Fitting & ASME Toolbox both sit at 5.0 stars, but that hides the real split: 100% of CDSiPipe's written reviews are positive against 0% of Pipe Fitting & ASME Toolbox's. CDSiPipe also leads on in-app purchases (none vs 1) and iOS requirement (9.0 vs 13.0). Pipe Fitting & ASME Toolbox's advantage is ratings volume (20 vs 1). On price, rating, update cadence and ads there is nothing between them.

Both are free to download. Pipe Fitting & ASME Toolbox sells 1 one-off in-app purchase. CDSiPipe asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for CDSiPipe against 4.9 for Pipe Fitting & ASME Toolbox. That said, the two scores are not equally well evidenced: Pipe Fitting & ASME Toolbox has 20 ratings behind it against 1, so its average is the more settled of the two. Written reviews are what separate them: 100% of CDSiPipe's written reviews are positive against 0% of Pipe Fitting & ASME Toolbox's.

Both ship on a similar rhythm, roughly every 4 months. Both last shipped on October 24, 2026.

## The numbers

| Metric | CDSiPipe | Pipe Fitting & ASME Toolbox |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/cdsipipe/id665877570/reviews)** | [4.9 (20 ratings)](https://appshunter.io/ios/app/pipe-fitting-and-asme-toolbox/id6752763143/reviews) |
| Number of ratings | 1 | **20** |
| Positive reviews | **100.0% of reviews** | 0.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 4 months | Every 4 months |
| Monetization | **Free** | Free with in-app purchases |
| Size | 315 MB | 210 MB |
| Requires iOS | **9.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Charles D. Sheehy, Inc.](https://appshunter.io/developer/665877574) | [Ashvin Kevadiya](https://appshunter.io/developer/1756324971) |

## 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


### Pipe Fitting & ASME Toolbox

[App page](https://appshunter.io/ios/app/pipe-fitting-and-asme-toolbox/id6752763143)

Access essential piping engineering data, standards, and smart calculators for professionals and students. Covers ASME standards, pipe and flange dimensions, fitting details, and valve sizes. Includes daily tips and quizzes to enhance knowledge.

**Highlights:** Engineering calculators, Piping data and standards, Pipe dimensions, Flange dimensions, Fitting dimensions, Valve dimensions, Daily tips and quiz

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Lifetime Premium | $9.99 | one-time |


## Frequently asked questions

### Is CDSiPipe free?

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

### Is Pipe Fitting & ASME Toolbox free?

Pipe Fitting & ASME Toolbox is free to download, with in-app purchases available.

### Which has better reviews, CDSiPipe or Pipe Fitting & ASME Toolbox?

CDSiPipe is rated higher. CDSiPipe averages 5.0 out of 5 from 1 ratings, while Pipe Fitting & ASME Toolbox averages 4.9 from 20 ratings.

### Do CDSiPipe or Pipe Fitting & ASME Toolbox have ads?

Neither CDSiPipe nor Pipe Fitting & ASME Toolbox shows ads.

### Which is updated more often, CDSiPipe or Pipe Fitting & ASME Toolbox?

CDSiPipe ships an update every 4 months, and Pipe Fitting & ASME Toolbox every 4 months. Most recently, CDSiPipe was updated on October 24, 2026 and Pipe Fitting & ASME Toolbox on October 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.*