Natural Gas Pipe Size vs Two Phase Separator Lite
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Natural Gas Pipe Size
Quickly calculate natural gas pipe diameters and pressure drops for installations. Supports a wide range of conditions, materials, and units, providing instant and accurate results without subscriptions or ads.
- Instant pipe diameter calculation
- Pressure drop estimation
- Supports various conditions (heat, pressure, temp)
- Metric and imperial units
- Material and fitting selection
- No internet connection required
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Why not just use an AI assistant to quickly size pipes for natural gas installations? If you prefer fast and consistent results with a familiar user interface, no second-guessing, no trying out different AI models and no subscriptions - this app is for you. #### Pipe sizing and pressure drop calculation for natural gas installations made easy Estimate required pipe diameter for natural gas piping / installations in an instant. Calculate pressure drop for the selected pipe section. #### Obtain required pipe diameter instantly The application provides a quick and simple way to obtain required pipe diameter when designing natural gas piping systems. Only some basic user input is required (heat output and pipe length) and the result is instantaneous and accurate. #### Wide range of conditions The application allows to perform calculations at a wide range of conditions, as gas lower heating value, temperature, pressure and location altitude can be set individually in order to get accurate results. #### Calculate pressure drop easily After a quick estimate of the recommended standard or nominal pipe size, the user can choose their own diameter, customize pipe material and define fittings and valves to calculate volume flow rate, velocity and pressure drop. The app will notify the user if their chosen diameter is too small. #### Metric and Imperial units Natural Gas Pipe Size app can perform calculations using metric or imperial units. #### Features - Provides required pipe diameter for a pipe section in an instant; - Recommended diameter is displayed as a standard DN or nominal NPS; - Gas working pressure and temperature can be specified; - Wide range of working conditions (heat output, pressure and temperature); - Suitable for individual (home) as well as larger, industrial applications; - Different predefined materials can be selected; - Fittings and valves can be selected from the list; - Displays natural gas volume flow rate and pressure drop for selected pipe section; - Suggests whether the selected pipe diameter might be too small; - Metric and imperial units; - No data connection required to perform calculations; - No ads, no in-app purchases; #### Note The application displays results for a pipe section. Calculations for multiple pipe sections should be performed separately. ------ #### Some reviews Natural Gas Pipe Size: pipe sizing & pressure drop calculation for natural gas installations Very helpful natural gas pipe sizing.... I really like this version for sizing natural gas lines. Imperial units are certainly appreciated. Just be sure to reset the fittings section for each section of pipe you checking. 5 stars by Cod Peace | 09 Feb 2016 ---------- Erdgasleitung: Rohr Dimensionierung und Druckverlust-Berechnung für Erdgasanlagen Erdgasleitung Ich benutze diese App sehr viel und immer mit Erfolg. Habe die Angaben oft nachgerechnet und sie stimmten immer. 5 stars by MOMOG62 | 10 Dec 2013
Two Phase Separator Lite
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This is the lite version of the equipment sizing app which provides the two-phase separator design for various process conditions. The results for two different approaches, i.e. York Demister and Theoretical, are presented for demonstration of the full version app. Please refer to my website at http://salvasolution.com for background information and technical support. Ali P. Laleh, PhD, P.Eng.
Screenshots
Verdict
The clearest difference is price: Two Phase Separator Lite at Free against Natural Gas Pipe Size's $6.99. Two Phase Separator Lite also leads on iOS requirement (11.0 vs 26.0). Natural Gas Pipe Size's advantage is update cadence (every 9 months vs every 35 months). On 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
Two Phase Separator Lite is free to download; Natural Gas Pipe Size costs $6.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Natural Gas Pipe Size ships an update every 9 months, Two Phase Separator Lite every 35 months. The most recent releases landed on October 31, 2026 and October 26, 2026 respectively.
| Parameter | Natural Gas Pipe Size | Two Phase Separator Lite |
|---|---|---|
| Price | $6.99 | Free — better |
| Rating | 5.0 (1 ratings) — better | — |
| Positive reviews | 50.0% of reviews | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 9 months — better | Every 35 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | — |
| Devices | iPhone, iPad, Mac | iPhone, iPad, iPod |
| Requires iOS | 26.0 | 11.0 — better |
| Further details — not scored | ||
| Size | 1 MB | 27 MB |
| Age rating | 4+ | 4+ |
| Developer | Sebastjan Valic | Ali Pourahmadi Laleh |
In-app purchases
Natural Gas Pipe Size
No in-app purchases
Two Phase Separator Lite
No in-app purchases
Questions
Is Natural Gas Pipe Size free?
Is Two Phase Separator Lite free?
Do Natural Gas Pipe Size or Two Phase Separator Lite have ads?
Which is updated more often, Natural Gas Pipe Size or Two Phase Separator Lite?
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