Or Simplex Step-by-Step Solver

Name: Or Simplex Step-by-Step Solver
Rating: 4.61 (916 reviews)
Author: Simplex Developers

LiveSimplex Developers2 apps · 89.4K installsEducationFree · contains adsIn-app purchases: $2.49 per itemcom.simplex

OR Solver (Simplex method, Branch-and-Bound, Transportation, Big M)

Alert me ★ Watch Open in Play ↗

Total installs: 89,399
Installs / day: +48
Rating: 4.6★
Released: 20 Apr 2013
Last update: 12 Oct 2026
Countries: —

Install history

exact counter from Google Play

30dAll

Installs per day · last 90 days

Change timeline

2 changesFull history

12 Oct 2026 before
Update date
1 Oct 202612 Oct 2026
12 Oct 2026 before
Version
13.3.1 → 13.3.2

Country availability

Availability has not been checked for this app yet. “Check all countries” looks the app up in about 140 Google Play storefronts and shows where it is live, listed but not installable, or missing — plus any country-specific (custom) store listings.

Top countries

Country data will be available soon.

We estimate where downloads come from using the app’s position in Google Play’s top charts in about 140 countries. This app is not in any chart we have collected yet; the estimate appears as soon as it is.

Top chart positions

Not in any tracked top chart.

App manifest

Read this app's manifest from Google Play: permissions, declared SDKs, components and AdMob app ID. Saved analysis appears here automatically.

Data safety

declared by the developer on Google Play

Shares data with third parties Location, Personal info, and Device or other IDs
Collects data Location, Personal info and 3 others
Data is encrypted in transit
No way to ask for data deletion

This is the developer's own declaration, summarised from the Play listing. The permissions below show what the app is technically able to access.

Permissions

7 in 3 groups

4 Sensitive1 Notable2 Routine

What this app can do with your phone

Read photos, videos, and other files saved in your phone's shared storage
Add, change or delete photos, videos and other files in your phone's storage

Photos/Media/FilesSensitive2

Access to photos, videos, music and other files stored on your device

Read photos, videos, and other files saved in your phone's shared storageread the contents of your USB storage · READ_EXTERNAL_STORAGE
Add, change or delete photos, videos and other files in your phone's storagemodify or delete the contents of your USB storage · WRITE_EXTERNAL_STORAGE

StorageSensitive2

Access to files, photos and media saved on your phone's storage

Read photos, videos, and other files saved in your phone's shared storageread the contents of your USB storage · READ_EXTERNAL_STORAGE
Add, change or delete photos, videos and other files in your phone's storagemodify or delete the contents of your USB storage · WRITE_EXTERNAL_STORAGE

OtherNotable3

Access to miscellaneous device features that don't fit other categories

Keep your phone's processor or screen from going to sleep, which can use more batteryprevent device from sleeping · WAKE_LOCK
Check whether you are online and whether you use Wi-Fi or mobile dataview network connections · ACCESS_NETWORK_STATE
Connect to the internet to load content and send datafull network access · INTERNET

Read more · all 7 permissions Show less

Sensitive = can reach personal data, location, camera/mic or act on your behalf. Notable = changes how your device behaves. Routine = normal for almost every app. Source: Google Play's permission list for all versions of this app.

Store listing

Download

Full description

📘 OR Simplex Step-by-Step — the most complete Operations Research solver on Android. Built and validated with professors at Kyiv Polytechnic University, used by thousands of students worldwide. ━━━━━━━━━━━━━━━━━━━━━━━━━ 🧮 EVERY METHOD YOU NEED ━━━━━━━━━━━━━━━━━━━━━━━━━ 🔢 Simplex Method — classical, Two-Phase, and Big-M 🎯 Integer programming — Branch & Bound 📈 2D graphical method — feasible region, objective line, optimum 🧊 NEW: 3D polytope visualization for 3-variable LP — rotate and explore the feasible region 🔍 Sensitivity & Post-Optimal Analysis — ranges, shadow prices, RHS intervals 🚛 Transportation Problem — North-West Corner, Least-Cost, Vogel's Approximation (VAM) 🔄 MODI / U-V Method — optimality test and refinement ✅ Assignment Problem — Hungarian Algorithm ⏱️ Job Sequencing — 2, 3, and N-machine using Johnson's Algorithm ━━━━━━━━━━━━━━━━━━━━━━━━━ ⭐ WHY STUDENTS CHOOSE IT ━━━━━━━━━━━━━━━━━━━━━━━━━ 📝 Step-by-step explanations — every iteration commented in plain language ➗ Exact fraction arithmetic — no rounding errors, ever ⌨️ Dedicated math keyboard — built for fractions, signs, and decimals 📂 Problem history — save, reopen, and edit past problems 🌍 8 languages — English, Español, Français, Português, Русский, Українська, العربية, فارسی ⛔ 100% offline — no account, no internet, no tracking of your work

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