Simplex vs Case Math Trainer
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Simplex
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Do you spend hours solving algebraic matrices by hand, only to have a single sign error ruin your entire Linear Optimization exercise? Understanding the Simplex Algorithm in Operations Research can be frustrating. Current tools are clunky, confusing, and seem like they're from the 90s. DISCOVER SIMPLEX EDUCATIONAL The high-fidelity academic tool designed exclusively for iOS and iPadOS that transforms complex matrices into a fluid, readable, and intuitive visual experience. Perfect for students of Industrial Engineering, Economics, Business Administration, and optimization professionals. WHAT YOU CAN DO: • Dynamic Model Builder: Switch between Maximization (Max Z) and Minimization (Min Z). Enter constraints with operators (≤, ≥, =). • Intelligent Engine: Automatic conversion to Standard Form (injecting slack, surplus, and artificial variables). • Special Case Detection: Identifies unique, multiple (infinite), unbounded, or infeasible solutions without infinite loops. • Local History with SwiftData: Audit your past problems instantly, without re-entering large matrices. CHOOSE HOW TO LEARN: 1. FINAL RESULT MODE (Free): Your executive success card. Visualize the optimal vertex with specific color codes (Green for unique solution, Purple for multiple). 2. STEP-BY-STEP MODE: An interactive learning log that details each iteration and pivot in ultra-readable, single-spaced tables. Access it for free through rewarded ads or unlock it forever. PRO PASS (One-Time Payment - No Subscriptions): Completely remove ads, unlock unlimited offline Step-by-Step Guides, and export your completed exercises as LaTeX code or professional PDFs. Designed following Apple's guidelines to offer you a clean, dark, and fast interface. Pass your course without frustration!
Case Math Trainer
Practice complex arithmetic and problem-solving skills under timed conditions, simulating real-world interview scenarios. Focuses on managing large numbers, identifying setup errors, and interpreting data from various charts. Includes spoken answer practice and adaptive training based on your performance.
- Timed arithmetic sprints with business magnitudes
- Zero management drills
- Word problems with separate formula scoring
- Exhibit reading from charts
- Spoken answer practice with speech recognition
- Adaptive training based on weaknesses
- Private by design, no account or tracking
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No calculator. A clock running. An interviewer listening. Numbers in the millions where one dropped zero ends the discussion. The arithmetic was never the hard part, but the conditions are, and it's tough to practice them. Case Math Trainer drills the problem solving conditions, not just the math. DAILY ADAPTIVE TRAINING • Timed arithmetic sprints at business magnitudes — 748M ÷ 11, not 12 ÷ 4 • Dedicated zeros-management drills for the #1 careless-error class • Word problems where picking the right formula is scored separately from computing it — because most "math" misses are setup misses • Exhibit reading: pull numbers off bar, line, waterfall, and table charts under time pressure, and answer in real units • Benchmark decks on spaced repetition: 1/7 ≈ 14.3%, rule of 72, the shortcuts that free your working memory ANSWER OUT LOUD One block per session is spoken, not typed. On-device speech recognition checks your answer and times how long you hesitated before speaking — the composure metric interviews actually score. ASSESSMENT PREP • Trap sprints: percentage points vs. percent, weighted averages, denominator switches — every wrong option is a real classic error • Rapid-averaging speed drills • A mini-simulation that makes you collect data into a research journal from exhibits, then compute through chained questions where your own errors cascade IT ADAPTS TO YOU Every skill has its own difficulty staircase. Sessions are composed from your weaknesses — miss zeros this week, and next week's sessions know. Smart-rounding walkthroughs after every problem show the path a strong candidate takes. PRIVATE BY DESIGN No account. No tracking. Nothing leaves your phone — speech is processed on-device and never stored. Your data is yours, exportable anytime. Built for anyone preparing for consulting-style case interviews or quantitative assessment games.
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Verdict
The clearest difference is in-app purchases: Case Math Trainer at none against Simplex's 1. Case Math Trainer also leads on ads (none vs shown) and iOS requirement (17.0 vs 26.0). On price and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Simplex sells 1 one-off in-app purchase. Case Math Trainer asks for nothing beyond the download.
| Parameter | Simplex | Case Math Trainer |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (7 ratings) — better |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | — | 7 — better |
| Update frequency | — | Weekly |
| Ads | Yes | No — better |
| In-app purchases | Yes | No — better |
| Monetization | — | Free |
| Devices | iPhone, iPad — better | iPhone |
| Requires iOS | 26.0 | 17.0 — better |
| Further details — not scored | ||
| Size | 5 MB | 3 MB |
| Age rating | 4+ | 4+ |
| Developer | Fernando Castillo | James Holm |
In-app purchases
Simplex
- Simplex Premium$1.99
Case Math Trainer
No in-app purchases









