Comparison

Two Phase Separator Lite vs Linear System Solver

Price, ratings, monetisation and update history for both apps, side by side โ€” with what reviewers say about each.

Head to head
About

Two Phase Separator Lite

Features
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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.

About

Linear System Solver

Features
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This application helps students or any person who needs, to solve a system of 3 linear equation with 3 unknowns. A system of linear equations is of this type: / | a11.x + a12.y + a13.z = c1 | a21.x + a22.y + a23.z = c2 | a31.x + a32.y + a33.z = c3 \ Values are required for x,y,z which satisfy the 3 equations. In the application skema, insert the matrix coefficients: a11 a12 a13 a21 a22 a23 a31 a32 a33 and next insert the constant values: c1 c2 c3 Finally, hit the Solve button. If the system has a real solution, this will be shown (x,y,z) in the last row. If no real solution exists, NO,NO,NO will be shown.

Screenshots

Two Phase Separator Lite4 screens
Linear System Solver2 screens

Verdict

The call

The clearest difference is price: Two Phase Separator Lite at Free against Linear System Solver's $0.99. Two Phase Separator Lite also leads on iOS requirement (11.0 vs 15.0). Linear System Solver's advantage is update cadence (every 3 days vs every 35 months). On ads, in-app purchases and device support there is nothing between them.

Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS

CostPrice ยท In-app purchases ยท Ads ยท Monetization

Two Phase Separator Lite is free to download; Linear System Solver costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Two Phase Separator Lite ships an update every 35 months, Linear System Solver every 3 days. The most recent releases landed on September 23, 2026 and September 26, 2026 respectively.

Scorecard3 real differences ยท 3 level
Two Phase Separator Lite versus Linear System Solver: the parameters behind the verdict, then further details
ParameterTwo Phase Separator LiteLinear System Solver
PriceFree โ€” better$0.99
Update frequencyEvery 35 monthsEvery 3 days โ€” better
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPad, iPod โ€” betteriPhone, iPod
Requires iOS11.0 โ€” better15.0
Further details โ€” not scored
Size27 MB1 MB
Age rating4+4+
DeveloperAli Pourahmadi LalehLuigi Fonti

In-app purchases

None

Two Phase Separator Lite

No in-app purchases

None

Linear System Solver

No in-app purchases

Questions

Is Two Phase Separator Lite free?
Two Phase Separator Lite is free to download, with no in-app purchases.
Is Linear System Solver free?
Linear System Solver costs $0.99, with no in-app purchases.
Do Two Phase Separator Lite or Linear System Solver have ads?
Neither Two Phase Separator Lite nor Linear System Solver shows ads.
Which is updated more often, Two Phase Separator Lite or Linear System Solver?
Two Phase Separator Lite ships an update every 35 months, and Linear System Solver every 3 days. Most recently, Two Phase Separator Lite was updated on September 23, 2026 and Linear System Solver on September 26, 2026.

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