Contractor.MBA vs quant blitz
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Contractor.MBA
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Great work builds your reputation. A strong business builds your future. Contractor.MBA helps contractors strengthen the financial clarity, pricing confidence, systems, and operating discipline required to build stronger, more profitable companies. This isn’t another class you watch and forget. Powered by Contractor Conditioning™, Contractor.MBA combines practical instruction, focused reps, guided application, Training Boards, and real-world business tools designed specifically for contractors. One rep at a time. LEARN. REP. BUILD. OPERATE. LEARN | Understand the principles behind stronger business decisions. REP | Strengthen your judgment and skills through focused practice. BUILD | Create practical tools, systems, and operating assets for your company. OPERATE | Put what you’ve learned to work in real business decisions. BUSINESS OPERATIONS & PROFITABILITY Our featured certificate focuses on the numbers, decisions, and operating systems that influence profitability and business performance. Develop skills in: • Financial performance and cash flow • Pricing and estimating • Job costing and profitability • Overhead and business budgeting • Owner compensation and financial planning • Equipment and investment decisions • Operational systems and workflows • Capacity, accountability, and growth INSIDE CONTRACTOR.MBA • Video training built specifically for contractors • Contractor Conditioning™ reps and application • Guided Training Boards • Practical business tools, templates, and calculators • Structured learning designed to move from knowledge to execution • Training you can access wherever you work BUILT FOR CONTRACTORS WHO WANT MORE Whether you’re an owner-operator working to get organized or an established contractor strengthening your operations, Contractor.MBA helps you build the capabilities to operate with greater clarity, discipline, and confidence. Additional Contractor.MBA certificates will be added as they are released. Another class isn’t the goal. A stronger operating business is. Stronger Contractor. Stronger Company. Developed by Rooted Mission LLC.
quant blitz
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Prep for quant interviews in a few minutes a day, for trading and quant developer roles. quant blitz turns the questions trading firms ask into short multiple-choice lessons, with an explanation after every answer: over 1,400 questions, plus mental math speed drills. Pick your role, then work through a path that ramps up from the basics. TRADING • Mental math: timed speed drills with typed answers, Zetamac style, from quick sums to decimals, percentages and sequences. Plus test conditions: 80 problems in 8 minutes. • Probability: counting, Bayes, expectation, variance and the classic distributions. • Brainteasers: dice, cards and urns, waiting times and optimal stopping. • Betting and games: expected value, Kelly sizing and game theory. • Market making: quotes and spreads, making a market, adverse selection and trading games. • Options: payoffs and put–call parity, pricing bounds, the Greeks and volatility. DEV • C++: core language, memory and object lifetime, templates, the STL, concurrency and memory ordering, operating systems, and low-latency performance. • Python: the data model, data structures and their costs, functions and OOP, the GIL and concurrency, CPython internals, NumPy and pandas, and operating systems. LEARN IN A WAY THAT STICKS • Lessons of 8–10 questions that ramp up in difficulty • Missed questions come back until you get them right, then return in spaced reviews • Take the placement test to start at your level, or jump ahead with a checkpoint • Streaks, a daily XP goal and an optional reminder keep you consistent BLITZ MODE Answer against the clock for bonus XP: 30 seconds for concept questions, 60 for the rest. PREMIUM The full path and the speed drills are free; lessons are limited by hearts. Premium adds unlimited hearts, blitz mode, jumping straight to any section, full stats (mastery by section, accuracy by question type and 30 days of XP) and a searchable question bank. Choose yearly, with a 3-day free trial, monthly, or a one-time lifetime purchase. Yearly and monthly Premium are auto-renewing subscriptions. Payment is charged to your Apple Account at confirmation of purchase, or when a free trial ends, and the subscription renews at the end of each period unless you cancel at least 24 hours before it ends. Manage or cancel it in your App Store account settings. Lifetime is a one-time purchase and doesn't renew. Privacy policy: https://lukazsdev.github.io/quantblitz/privacy/ Terms of use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is in-app purchases: Contractor.MBA at none against quant blitz's 3. quant blitz's advantage is update cadence (every 3 days vs weekly). On price, ads, device support and iOS requirement 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. quant blitz sells 3 in-app purchases, starting at $12.99 per month. Contractor.MBA asks for nothing beyond the download.
Contractor.MBA ships an update weekly, quant blitz every 3 days. Both last shipped on November 6, 2026.
| Parameter | Contractor.MBA | quant blitz |
|---|---|---|
| Price | Free | Free |
| Update frequency | Weekly | Every 3 days — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Devices | iPhone, iPad — better | iPhone |
| Requires iOS | 16.6 | 16.4 — better |
| Further details — not scored | ||
| Size | 51 MB | 61 MB |
| Age rating | 4+ | 4+ |
| Developer | Leslie Soderberg | Velori Labs Ltd |
In-app purchases
Contractor.MBA
No in-app purchases
quant blitz
- Premium Monthly7 Days trial$12.991 Month
- Premium Yearly3 Days trial$79.991 Year
- Premium Lifetime$199.99









