# SimplexLP vs 3D Rotations and Quaternions

The clearest difference is price: 3D Rotations and Quaternions at Free against SimplexLP's $3.99. 3D Rotations and Quaternions also leads on update cadence (every 3 weeks vs every 12 months). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

3D Rotations and Quaternions is free to download; SimplexLP costs $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

SimplexLP ships an update every 12 months, 3D Rotations and Quaternions every 3 weeks. The most recent releases landed on June 5, 2026 and September 23, 2026 respectively.

## The numbers

| Metric | SimplexLP | 3D Rotations and Quaternions |
| --- | --- | --- |
| Price | $3.99 | **Free** |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/simplexlp/id1114880223/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 66.7% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 12 months | **Every 3 weeks** |
| Monetization | Paid | — |
| Size | 4 MB | 1 MB |
| Requires iOS | **14.1** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Axel Besser](https://appshunter.io/developer/790706426) | [Yuri Morozov](https://appshunter.io/developer/1582368813) |

## 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


### 3D Rotations and Quaternions

[App page](https://appshunter.io/ios/app/3d-rotations-and-quaternions/id6618113140)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is SimplexLP free?

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

### Is 3D Rotations and Quaternions free?

3D Rotations and Quaternions is free to download, with no in-app purchases.

### Do SimplexLP or 3D Rotations and Quaternions have ads?

Neither SimplexLP nor 3D Rotations and Quaternions shows ads.

### Which is updated more often, SimplexLP or 3D Rotations and Quaternions?

SimplexLP ships an update every 12 months, and 3D Rotations and Quaternions every 3 weeks. Most recently, SimplexLP was updated on June 5, 2026 and 3D Rotations and Quaternions on September 23, 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.*