SimplexLP vs Astable
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- 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
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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!
Astable
This application provides a powerful structural mechanics solver with a graphic editor, code editor, and workspace. It allows for detailed mechanics parameter settings and offers a rich theme color scheme, making it ideal for large screen devices.
- Graphic editor
- Code editor
- Workspace
- Mechanics parameter settings
- Rich theme color scheme
- Large screen device optimized
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Astable Grand is a beautiful and powerful structural mechanics solver with graphic editor, code editor, workspace, mechanics parameter settings, rich theme color scheme, etc. It is suitable for large screen devices such as tablet and PC.
Screenshots
Verdict
The clearest difference is update cadence: Astable at every 2 weeks against SimplexLP's every 12 months. Astable also leads on iOS requirement (12.0 vs 14.1). SimplexLP's advantage is review sentiment (67% vs 50%) and price ($3.99 vs $4.99). On ads, in-app purchases, monetization model and device support 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
SimplexLP costs $3.99 and Astable $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.
SimplexLP ships an update every 12 months, Astable every 2 weeks. The most recent releases landed on September 28, 2026 and July 8, 2026 respectively.
| Parameter | SimplexLP | Astable |
|---|---|---|
| Price | $3.99 — better | $4.99 |
| Rating | 5.0 (1 ratings) — better | — |
| Positive reviews | 66.7% of reviews — better | 50.0% of reviews |
| Number of ratings | 1 — better | — |
| Update frequency | Every 12 months | Every 2 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod, Mac — better |
| Requires iOS | 14.1 | 12.0 — better |
| Further details — not scored | ||
| Size | 4 MB | 35 MB |
| Age rating | 4+ | 4+ |
| Developer | Axel Besser | 家豪 鲁 |
Customer experience
SimplexLP
Astable
In-app purchases
SimplexLP
No in-app purchases
Astable
No in-app purchases









