CDSiPipe vs mechanical design engine
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
CDSiPipe
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.
- 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
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cdsiPipe is a pipe and valve reference toolbox designed for process piping, HVAC and MEP professionals. The easy-to-navigate user interface allows users to quickly move through different information with ease, exploring the capacities, coatings, chemistry, finishes and physical dimensions, including working pressure, of steel pipe. The recently added valve section now allows users to identify pressure ratings of specific valves through a user-friendly interface as well. The picker wheel found within cdsiPipe’s Properties category, under Pipe, serves as the most in-depth tool available to quickly understand not only common attributes of steel pipe (OD,ID,weight) but also volume, wall thickness, weight with water and working pressure information. The drop down menus found within cdsiPipe’s Properties category, under Valves, allows users to access sketches that display different characteristics such as bolting information, maximum weight and all dimensions for specific valves. Each valve has it’s own photo gallery in which users can view the actual product in a high quality image. The different types of steel pipe, including ERW and seamless, are explained; as are the various end finishes along with their ANSI standard. The different types of valves, including Butterfly, Gate, Check, Globe and Ball are also explained in depth. Separate glossaries explaining the common terms and abbreviations used in the piping industry are included in the pipe and valve sections. Both categories include FAQ sections, which answer questions and dispel common misconceptions with concise information. This application covers pipe from ¼” through 36”, and schedules 10 through 160. Also valves ranging from ¼” up to 24”. ©2014 Morrissey + Camuso
mechanical design engine
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* To calculate basic thickness of cylindrical/rectangular pressure vessel including heads if input data such as pressure, temperature, inner diameter and material information. * flange data can be easily searched. * Profile steel information such as pipe, H, W, I and U-Beam. * Raw material information, that is chemical composition and mechanical properties, for example, ASTM A240 316L, EN10297-1, SUS316L and so on. * Size and shape information of every thread(iso/unf/pf/pt) and shackles(bow/d-type) * To calculate force and moment of solid mechanics according to support type.
Screenshots
Verdict
The clearest difference is update cadence: mechanical design engine at every 2 months against CDSiPipe's every 4 months. CDSiPipe's advantage is iOS requirement (9.0 vs 13.0). On price, ads, in-app purchases and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
CDSiPipe ships an update every 4 months, mechanical design engine every 2 months. The most recent releases landed on September 22, 2026 and October 11, 2026 respectively.
| Parameter | CDSiPipe | mechanical design engine |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 4 months | Every 2 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 9.0 — better | 13.0 |
| Further details — not scored | ||
| Size | 315 MB | 63 MB |
| Age rating | 4+ | 4+ |
| Developer | Charles D. Sheehy, Inc. | gan dae choi |
In-app purchases
CDSiPipe
No in-app purchases
mechanical design engine
No in-app purchases
Questions
Is CDSiPipe free?
Is mechanical design engine free?
Do CDSiPipe or mechanical design engine have ads?
Which is updated more often, CDSiPipe or mechanical design engine?
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