Comparison

SimplexLP vs CombinedFooting

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

Head to head
About

SimplexLP

This app simplifies linear optimization problems with an objective function and constraints. It offers a graphical representation for problems with two variables, making it an ideal learning tool for students and teachers of the Simplex algorithm.

Highlights
  • Solves maximization and minimization problems
  • Handles unlimited variables and constraints
  • Supports ≤, ≥, and = inequalities
  • Provides graphical representation for 2-variable problems
  • Outputs calculations in fractions or decimals
  • Offers accurate calculations with fractions
Features
Read full description

SimplexLP solves linear optimization problems, which can be mathematically described with an objective function and a set of constraints. With the new graphical representation (possible with 2 variables only) it is a lot easier to understand the theoretical concept of linear optimization! SimplexLP is the perfect learning companion for teachers (to set up problems) and students (to learn the Simplex algorithm). It is very easy to change coefficients and see how the solution varies. For the calculation the famous Simplex algorithm is used. With SimplexLP you can: – easily set up the objective function and the constraints; – solve maximization and minimization problems; – solve problems with unlimited number of variables and constraints; – solve problems with ≤, ≥ and = (in)equalities; – get all the possible solutions ("edges") to a problem; – get accurate calculations with fractions; – get your output in fractions or decimal values; – set a fixed value in the objective function, e.g. for fixed costs; – set the tab width (via a simple swipe gesture) to format the tableaus; – get a graphical representation of optimization problems with 2 variables. With SimplexLP linear optimization really makes fun!

About

CombinedFooting

Features
Currently charting
Read full description

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

SimplexLP4 screens
CombinedFooting4 screens

Verdict

The call

The clearest difference is price: SimplexLP at $3.99 against CombinedFooting's $14.99. CombinedFooting's advantage is update cadence (every 3 weeks vs every 12 months) and chart position (#132 vs unranked). On ads, in-app purchases, device support and iOS requirement 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

CostPrice · In-app purchases · Ads · Monetization

SimplexLP costs $3.99 and CombinedFooting $14.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

SimplexLP ships an update every 12 months, CombinedFooting every 3 weeks. The most recent releases landed on October 24, 2026 and October 12, 2026 respectively.

Scorecard3 real differences · 8 level
SimplexLP versus CombinedFooting: the parameters behind the verdict, then further details
ParameterSimplexLPCombinedFooting
Price$3.99 — better$14.99
Rating5.0 (1 ratings) — better—
Positive reviews66.7% of reviews—
Number of ratings1 — better—
Update frequencyEvery 12 monthsEvery 3 weeks — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaid—
Best chart rank—#132 — better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS14.1 — better15.0
Further details — not scored
Size4 MB3 MB
Age rating4+4+
DeveloperAxel BesserRab Elias

In-app purchases

None

SimplexLP

No in-app purchases

None

CombinedFooting

No in-app purchases

Questions

Is SimplexLP free?
SimplexLP costs $3.99, with no in-app purchases.
Is CombinedFooting free?
CombinedFooting costs $14.99, with no in-app purchases.
Do SimplexLP or CombinedFooting have ads?
Neither SimplexLP nor CombinedFooting shows ads.
Which is updated more often, SimplexLP or CombinedFooting?
SimplexLP ships an update every 12 months, and CombinedFooting every 3 weeks. Most recently, SimplexLP was updated on October 24, 2026 and CombinedFooting on October 12, 2026.

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