Comparison

Simplex Optima vs CombinedFooting

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

Head to head
About

Simplex Optima

Features
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The general form of an optimization problem comprises a linear function of variables, also called "objective function" and a number of constraint inequalities. The app can facilitate a maximisation as well as minimisation problem bearing up to 7 variables and up to 6 contraint inequalities. The solution algorithm is implemented by constructing and manipulating the Simplex tableau before calculating the parameters for which the maximum value of the objective function is obtained.

About

CombinedFooting

Features
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Design and Analysis for a Combined Foundation with Large Bi-axial loads and moment based on ACI code. - Determine the Location of Resultant and proposing new values to make the resultant concise with the Center of Foundation. - Check the Stability against Overturning in both Longitudinal and Transversal Direction. - Check the Stability against sliding in both Longitudinal and Transversal Direction. - Calculating the value K (Tengs Chart), modified Gross Pressure, Overburden and Pressure Net pressure in both factored and un-factored mode. - Ultimate Design Total loads Forces and Moments applied on the Foundation. - Distribution of Pressure under Foundation. - Shear Force and bending moment Diagram in both direction. - Two Way (Punching) Shear Capacity Checks under two pedestals. - One Way Shear Capacity Check. - Reinforcement Design in both Direction. - Graphic design showing the reinforcement details in both direction. Additionally, the application will provide a PDF comprehensive calculation with capability of sharing the same via emails, whatsup, etc,,,

Screenshots

Simplex Optima4 screens
CombinedFooting4 screens

Verdict

The call

The clearest difference is price: Simplex Optima at $2.99 against CombinedFooting's $14.99. Simplex Optima also leads on update cadence (every 5 days vs every 3 weeks) and iOS requirement (13.3 vs 15.0). CombinedFooting's advantage is chart position (#132 vs unranked). 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

Simplex Optima costs $2.99 and CombinedFooting $14.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Simplex Optima ships an update every 5 days, CombinedFooting every 3 weeks. The most recent releases landed on October 20, 2026 and October 12, 2026 respectively.

Scorecard4 real differences ยท 3 level
Simplex Optima versus CombinedFooting: the parameters behind the verdict, then further details
ParameterSimplex OptimaCombinedFooting
Price$2.99 โ€” better$14.99
Update frequencyEvery 5 days โ€” betterEvery 3 weeks
AdsNoNo
In-app purchasesNoNo
Best chart rankโ€”#132 โ€” better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS13.3 โ€” better15.0
Further details โ€” not scored
Size2 MB3 MB
Age rating4+4+
DeveloperKonstantinos LadiellisRab Elias

In-app purchases

None

Simplex Optima

No in-app purchases

None

CombinedFooting

No in-app purchases

Questions

Is Simplex Optima free?
Simplex Optima costs $2.99, with no in-app purchases.
Is CombinedFooting free?
CombinedFooting costs $14.99, with no in-app purchases.
Do Simplex Optima or CombinedFooting have ads?
Neither Simplex Optima nor CombinedFooting shows ads.
Which is updated more often, Simplex Optima or CombinedFooting?
Simplex Optima ships an update every 5 days, and CombinedFooting every 3 weeks. Most recently, Simplex Optima was updated on October 20, 2026 and CombinedFooting on October 12, 2026.

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