# SimplexLP vs Time Study Engineer

The clearest difference is price: Time Study Engineer at Free against SimplexLP's $3.99. Time Study Engineer also leads on review sentiment (100% vs 67%) and ratings volume (3 vs 1). SimplexLP's advantage is device support (3 vs 1). On rating, update cadence, ads and in-app purchases there is nothing between them.

Time Study Engineer is free to download; SimplexLP costs $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

On the App Store both sit at effectively the same score — 5.0 for SimplexLP against 5.0 for Time Study Engineer. Both are backed by a comparable volume of ratings — 1 and 3 respectively. Written reviews are what separate them: 67% of SimplexLP's written reviews are positive against 100% of Time Study Engineer's.

SimplexLP ships an update every 12 months, Time Study Engineer every 17 months. The most recent releases landed on September 28, 2026 and July 6, 2026 respectively.

## The numbers

| Metric | SimplexLP | Time Study Engineer |
| --- | --- | --- |
| Price | $3.99 | **Free** |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/simplexlp/id1114880223/reviews) | [5.0 (3 ratings)](https://appshunter.io/ios/app/time-study-engineer/id6740770124/reviews) |
| Number of ratings | 1 | **3** |
| Positive reviews | 66.7% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 12 months** | Every 17 months |
| Monetization | Paid | **Free** |
| Size | 4 MB | 7 MB |
| Requires iOS | **14.1** | 15.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Axel Besser](https://appshunter.io/developer/790706426) | [Vijay Gurav](https://appshunter.io/developer/1791521119) |

## What reviewers say

### SimplexLP

[App page](https://appshunter.io/ios/app/simplexlp/id1114880223)

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:** macOS Compatibility

**In-app purchases:** none


### Time Study Engineer

[App page](https://appshunter.io/ios/app/time-study-engineer/id6740770124)

This application assists industrial engineers in production and manufacturing settings with straightforward time study analysis. It allows for the export of collected data via email.

**Highlights:** Time study analysis, Production floor assistance, Manufacturing environment support, Data export via email, Simple interface

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is SimplexLP free?

SimplexLP costs $3.99, with no in-app purchases.

### Is Time Study Engineer free?

Time Study Engineer is free to download, with no in-app purchases.

### Which has better reviews, SimplexLP or Time Study Engineer?

SimplexLP and Time Study Engineer are both rated 5.0 out of 5 on the App Store, from 1 and 3 ratings respectively.

### Do SimplexLP or Time Study Engineer have ads?

Neither SimplexLP nor Time Study Engineer shows ads.

### Which is updated more often, SimplexLP or Time Study Engineer?

SimplexLP ships an update every 12 months, and Time Study Engineer every 17 months. Most recently, SimplexLP was updated on September 28, 2026 and Time Study Engineer on July 6, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*