Two Phase Separator Lite vs Volume in Pipe
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
Volume in Pipe
Quickly estimate the gas volume within pipes, launchers, or vessels. Input operating conditions and pipe size for an approximate volume calculation. This tool is designed for rapid field estimates.
- Estimate gas volume
- Input operating conditions
- Select pipe size
- Quick field estimates
- Supports iPhone
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Volume in Pipe (V.i.P.) is a simple, efficient tool for estimating the gas volume contained in a pipe, pig launcher/receiver, or vessel. Enter basic operating conditions, select a pipe size, and the app provides an approximate volume based on general assumptions. This tool is intended for quick field estimates only. It does not incorporate detailed gas analysis, which may significantly affect calculated volumes.
Screenshots
Verdict
The clearest difference is device support: Two Phase Separator Lite at 3 against Volume in Pipe's 1. Two Phase Separator Lite also leads on iOS requirement (11.0 vs 16.6). On price, update cadence, ads and in-app purchases 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.
Two Phase Separator Lite ships an update every 35 months, Volume in Pipe every 26 months. The most recent releases landed on September 23, 2026 and September 10, 2026 respectively.
| Parameter | Two Phase Separator Lite | Volume in Pipe |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (1 ratings) — better |
| Number of ratings | — | 1 — better |
| Update frequency | Every 35 months | Every 26 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Free |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 11.0 — better | 16.6 |
| Further details — not scored | ||
| Size | 27 MB | 11 MB |
| Age rating | 4+ | 4+ |
| Developer | Ali Pourahmadi Laleh | Kelly Gayneaux |
In-app purchases
Two Phase Separator Lite
No in-app purchases
Volume in Pipe
No in-app purchases
Questions
Is Two Phase Separator Lite free?
Is Volume in Pipe free?
Do Two Phase Separator Lite or Volume in Pipe have ads?
Which is updated more often, Two Phase Separator Lite or Volume in Pipe?
Other comparisons
