Pipe Sizer vs Duct Construction
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Pipe Sizer
This app helps water piping system engineers and designers quickly and accurately design and analyze piping systems. It offers direct input for flow, friction, or velocity, with live calculation updates and support for various units and pipe materials.
- Quickly size new piping systems
- Analyze existing piping systems
- Direct input for flow, friction, or velocity
- Live calculation updates
- Supports SI and IP units
- Works with steel, copper, and PVC pipes
- Includes fluid data for water and glycols
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The Pipe Sizer App for iOS has been designed to help water piping system engineers and designers quickly and accurately design new piping systems, and analyze existing pipping systems. Quickly size new and analyze existing piping systems on your iPhone or iPad. • Enter flow, friction rate or velocity numbers directly for maximum accuracy. • Use the sliders for quick calculations. • Calculations update live, giving you quick feedback on your design. • Lock flow rate, friction rate or velocity to size the pipe based on your input criteria. • Works for both SI and IP units. • Supports steel, copper and PVC piping. • Includes fluid data for: • Water • Ethylene glycol (10-90% by volume) • Propylene glycol (10-90% by volume) Put your plastic sizing wheel in the drawer. Have a modern design tool with you wherever you go. Note: This application (App) is provided for use by qualified piping system engineers and designers and is not a substitute for appropriate design services. When in doubt, contact a design professional.
Duct Construction
This app helps determine duct construction and reinforcement options based on duct size and system pressure class. It provides condensed lists of suitable options, saving time spent on manual calculations and table lookups. Results are based on industry standards for galvanized steel duct sheets.
- Duct size range from 2" to 120"
- Pressure classes up to 4 in.wg
- Calculates duct weights per linear foot
- Determines required duct gauge and reinforcement spacing
- Clear illustrations for reinforcement types
- Simple and effective UI design
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Get all duct construction and reinforcement options by entering the duct size and system pressure class. The aim of the app is to save time spent browsing through tables and texts to determine suitable options, by relying on the most widely used standards and providing a condensed list of available duct construction options. The results are based on galvanized steel duct sheets conforming to ASTM A653 & A924. The app does not cover all aspects of duct construction, as it is intended as a guide; Reliance on related standards, as well as good engineering sense is the basis for proper design. Features: 1. Duct sizes from 2" to 120" 2. Pressure classes 0.5 in.wg, 1 in.wg, 2 in.wg, 3 in.wg and 4 in.wg. 3. Provides the duct weights for each option per linear foot. 4. Provides required duct gauge and reinforcement spacing. 5. Clear illustration for each reinforcement type, as well as dimensions. 6. Simple and effective UI design. Roadmap / Upcoming updates: 1. SI units. 2. More pressure class options. 3. User will be able to save and retreive duct data for future reference. 3. More Reinforcement options, including tie-rodding. Request a feature: welmurr@icloud.com
Screenshots
Verdict
The clearest difference is review sentiment: Pipe Sizer at 100% against Duct Construction's 0%. Pipe Sizer also leads on rating (4.8 vs 1.0) and ratings volume (10 vs 1). Duct Construction's advantage is price ($0.99 vs $12.99). On update cadence, ads, in-app purchases and monetization model 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
Pipe Sizer costs $12.99 and Duct Construction $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Pipe Sizer holds the better App Store score, 4.8 against 1.0. That said, the two scores are not equally well evidenced: Pipe Sizer has 10 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 100% of Pipe Sizer's written reviews are positive against 0% of Duct Construction's.
Pipe Sizer ships an update every 17 months, Duct Construction every 10 months. The most recent releases landed on October 7, 2026 and September 25, 2026 respectively.
| Parameter | Pipe Sizer | Duct Construction |
|---|---|---|
| Price | $12.99 | $0.99 — better |
| Rating | 4.8 (10 ratings) — better | 1.0 (1 ratings) |
| Positive reviews | 100.0% of reviews — better | 0.0% of reviews |
| Number of ratings | 10 — better | 1 |
| Update frequency | Every 17 months | Every 10 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Devices | iPhone, iPad, Mac — better | iPhone, iPad |
| Requires iOS | 16.6 — better | 17.6 |
| Further details — not scored | ||
| Size | 2 MB | 1 MB |
| Age rating | 4+ | 4+ |
| Developer | Pheinex, LLC | Wassim Murr |
Customer experience
Pipe Sizer
Duct Construction
In-app purchases
Pipe Sizer
No in-app purchases
Duct Construction
No in-app purchases
Questions
Is Pipe Sizer free?
Is Duct Construction free?
Which has better reviews, Pipe Sizer or Duct Construction?
Do Pipe Sizer or Duct Construction have ads?
Which is updated more often, Pipe Sizer or Duct Construction?
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