Simplex Optima vs CombinedFooting
Price, ratings, monetisation and update history for both apps, side by side โ with what reviewers say about each.
Simplex Optima
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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.
CombinedFooting
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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
Verdict
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
Simplex Optima costs $2.99 and CombinedFooting $14.99 up front. Neither carries in-app purchases, so what you see is what you pay.
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.
| Parameter | Simplex Optima | CombinedFooting |
|---|---|---|
| Price | $2.99 โ better | $14.99 |
| Update frequency | Every 5 days โ better | Every 3 weeks |
| Ads | No | No |
| In-app purchases | No | No |
| Best chart rank | โ | #132 โ better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 13.3 โ better | 15.0 |
| Further details โ not scored | ||
| Size | 2 MB | 3 MB |
| Age rating | 4+ | 4+ |
| Developer | Konstantinos Ladiellis | Rab Elias |
In-app purchases
Simplex Optima
No in-app purchases
CombinedFooting
No in-app purchases
Questions
Is Simplex Optima free?
Is CombinedFooting free?
Do Simplex Optima or CombinedFooting have ads?
Which is updated more often, Simplex Optima or CombinedFooting?
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