Linprog vs Or Simplex Step
Price, ratings, monetisation and update history for both apps, side by side โ with what reviewers say about each.
Linprog
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Linprog solves linear programming and optimization problems step by step โ and shows the complete worked solution, not just the final answer. From a classic simplex tableau to the travelling salesman problem, it covers the operations research methods you actually study, and works fully offline. Whether you're a student checking coursework or solving a problem set, Linprog walks through each method in full, saves your work so you can revisit it, and presents results as exact fractions or decimals. OPERATIONS - Simplex method calculator - Dual simplex method calculator - Transportation problem โ potential method calculator - Assignment problem โ Hungarian method calculator - Travelling salesman problem calculator (TSP) - Game theory calculator - Dynamic programming calculator LINEAR PROGRAMMING Maximize or minimize a linear objective function under linear constraints. Linprog handles the full setup โ objective, constraints, and bounds โ and shows every pivot of the simplex (and dual simplex) algorithm so you can follow exactly how the optimum is reached. FEATURES - Full step-by-step solutions for every method - Custom keyboard for fast, convenient data entry - Save and edit your solutions - Works without an internet connection - Results as ordinary or decimal fractions Web version: https://linprog.com
Or Simplex Step
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OR Simplex Step-by-Step is a comprehensive Operations Research solver for students. Built and validated with professors at Kyiv Polytechnic University, it is used by students worldwide. EVERY METHOD YOU NEED - Simplex method: classical, Two-Phase, and Big-M - Integer programming: Branch and Bound - 2D graphical method: feasible region, objective line, and optimum - 3D polytope visualization for 3-variable linear programming: rotate and explore the feasible region - Sensitivity and post-optimal analysis: ranges, shadow prices, and RHS intervals - Transportation problem: North-West Corner, Least-Cost, and Vogel's Approximation (VAM) - MODI / U-V method: optimality test and refinement - Assignment problem: Hungarian algorithm - Job sequencing: 2, 3, and N machines using Johnson's algorithm WHY STUDENTS CHOOSE IT - Step-by-step explanations with every iteration described in plain language - Exact fraction arithmetic to avoid rounding errors - Dedicated math keyboard for fractions, signs, and decimals - Problem history to save, reopen, and edit past problems - 8 languages: English, Spanish, French, Portuguese, Russian, Ukrainian, Arabic, and Persian - No account required
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Verdict
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.
Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS
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.
| Parameter | Linprog | Or Simplex Step |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 2 weeks | Every 10 days โ better |
| Ads | Yes | Yes |
| In-app purchases | No โ better | Yes |
| Devices | iPhone, iPod | iPhone, iPad, iPod โ better |
| Requires iOS | 15.1 | 15.0 โ better |
| Further details โ not scored | ||
| Size | 52 MB | 45 MB |
| Age rating | 4+ | 4+ |
| Developer | Vitalii Solovei | Bohdan Bezpartochnyi |
In-app purchases
Linprog
No in-app purchases
Or Simplex Step
- OR Commented Pro$2.99
Questions
Is Linprog free?
Is Or Simplex Step free?
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Which is updated more often, Linprog or Or Simplex Step?
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