SimplexLP vs iPTE
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!
iPTE
Explore the periodic table with extensive data on chemical elements and over 5500 isotopes. Features include element images, electron configurations, discovery history, and a solubility chart. Ideal for students, teachers, and science enthusiasts.
- Extensive element data
- Over 5500 isotopes
- Solubility chart
- Element images and electron configurations
- Discovery history
- Search functionality
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This fact-filled, image-rich app is the only periodic table you need. In the app You will find a huge amount of data about chemical elements. More than 5500 Isotopes of all the element are also in the app. You will learn a lot of new and useful for yourself, ideal if you're a student, teacher or just have an interest in the chemical sciences or nuclear sciences. The table has a long-form approved by the International Union of Pure and Applied Chemistry (IUPAC) as the core. Besides the elements, you can use the Table of solubility. - When you move your finger on any element provides information that is constantly updated. - Every item have an image of element and an image of electron configuration. - Discovery history. - Solubility Chart. - To find any element you can use the search by typing any character. - More than 5500 Isotopes of all the element. - Animation engarded to show the information. - IUPAC Naming or CAS Naming as your choice.
Screenshots
Verdict
The clearest difference is review sentiment: iPTE at 100% against SimplexLP's 67%. iPTE also leads on price ($1.99 vs $3.99). On update cadence, ads, in-app purchases and monetization model 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 iPTE $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.
SimplexLP ships an update every 12 months, iPTE every 9 months. The most recent releases landed on September 28, 2026 and September 22, 2026 respectively.
| Parameter | SimplexLP | iPTE |
|---|---|---|
| Price | $3.99 | $1.99 — better |
| Rating | 5.0 (1 ratings) — better | — |
| Positive reviews | 66.7% of reviews | 100.0% of reviews — better |
| Number of ratings | 1 — better | — |
| Update frequency | Every 12 months | Every 9 months — 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 | 13.0 — better |
| Further details — not scored | ||
| Size | 4 MB | 98 MB |
| Age rating | 4+ | 4+ |
| Developer | Axel Besser | 建锋 宋 |
Customer experience
SimplexLP
iPTE
In-app purchases
SimplexLP
No in-app purchases
iPTE
No in-app purchases
Questions
Is SimplexLP free?
Is iPTE free?
Do SimplexLP or iPTE have ads?
Which is updated more often, SimplexLP or iPTE?
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