# Linprog vs Or Simplex Step

The clearest difference is in-app purchases: Linprog at none against Or Simplex Step's 1. On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Or Simplex Step sells 1 one-off in-app purchase. Linprog asks for nothing beyond the download.

Linprog ships an update every 2 weeks, Or Simplex Step every 10 days. The most recent releases landed on October 28, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Linprog | Or Simplex Step |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 2 weeks | **Every 10 days** |
| Size | 52 MB | 45 MB |
| Requires iOS | 15.1 | **15.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Vitalii Solovei](https://appshunter.io/developer/1535373267) | [Bohdan Bezpartochnyi](https://appshunter.io/developer/1850325090) |

## What reviewers say

### Linprog

[App page](https://appshunter.io/ios/app/linprog-linear-programming/id6785194507)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### Or Simplex Step

[App page](https://appshunter.io/ios/app/or-simplex-step-by-step-solver/id6816232479)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| OR Commented Pro | $2.99 | one-time |


## Frequently asked questions

### Is Linprog free?

Linprog is free to download, with no in-app purchases.

### Is Or Simplex Step free?

Or Simplex Step is free to download, with in-app purchases available.

### Do Linprog or Or Simplex Step have ads?

Both Linprog and Or Simplex Step show ads.

### Which is updated more often, Linprog or Or Simplex Step?

Linprog ships an update every 2 weeks, and Or Simplex Step every 10 days. Most recently, Linprog was updated on October 28, 2026 and Or Simplex Step on October 24, 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.*