Large Math Drill vs Rehearse Coach

Train Your Brain to Think in Billions. ■ Can your mental math keep up with high-stakes business? Most people freeze when they see numbers like a hundred million or a few trillion—but in boardrooms, pitch decks, and consulting interviews, that's just the starting point. If you can’t quickly estimate and compute large figures on the fly, you’re not just slow—you’re forgettable. This app gives you the edge: a powerful training ground for mastering the kind of numeric fluency that quietly separates decision-makers from everyone else. ■ What does the app do? It’s laser-focused: Choose your unit: Thousand, Million, Billion, Trillion Customize the number types: powers of 10, multiples of 5 Select operation types: Addition, Division, and more Tap Start and answer lightning-fast using a calculator-style interface The questions appear at the top, and your ability to instantly recognize, process, and act on large numbers is tested in real-time. ■ Track your progress, in numbers—not feelings. Forget vague notions of “I think I’m improving.” This app gives you hard data: Daily accuracy and time-per-question charts Mistakes are saved and recycled into focused review drills Compare historical stats to watch both speed and accuracy evolve ■ Why does it work? Forces your working memory to confront upper limits Strengthens mental arithmetic under pressure Encourages structural thinking even in a multiple-choice format ■ Who is this for? Aspiring consultants, analysts, and investment bankers Founders, execs, and anyone making real decisions with real numbers Students prepping for standardized tests, logic interviews, or competitive math Lifelong learners training for cognitive performance and sharper thinking ■ Use it for interview prep, case studies, quant drills, and more "Estimate the future market for a trillion-dollar industry." "Quickly calculate a rough ROI under time pressure." If those questions make you hesitate, you're not ready. This app builds the intuition and reflexes to handle such questions without blinking. It’s a secret weapon for case interviews, mental math assessments, business exams, and anywhere sharp numeric instincts are non-negotiable. ■ Other features Full English unit support: thousand, million, billion, trillion, quadrillion Clean, intuitive interface Customizable sound, color themes, and answer modes ■ Numbers Don’t Lie. Neither Should Your Brain. This isn’t just a calculator. It’s a mental transformation tool. People who speak the language of large numbers tend to get more respect, more responsibility, and more results. So don’t get left behind. Start training today—even one minute a day rewires the way you think.

Ace your consulting case interviews with Rehearse Coach, your AI-powered interview practice partner. Rehearse Coach simulates real market sizing case interviews used by top consulting firms like McKinsey, Bain, and BCG. Practice anytime, anywhere, and get detailed AI-powered feedback to sharpen your skills. HOW IT WORKS • Choose a market sizing case question • Talk through your approach out loud with the AI interviewer • Receive follow-up questions based on your responses • Get a comprehensive performance analysis when you're done DETAILED PERFORMANCE ANALYSIS Your performance is scored across five key dimensions used by top consulting firms: • Structured Problem-Solving — framework quality and MECE analysis • Business Judgment — assumption quality and justification • Quantitative Skills — math accuracy and calculations • Communication — clarity and articulation • Sanity Check — result validation FEATURES • Real-time voice-based AI interviews (10-minute sessions) • Live speech-to-text transcription • Overall weighted performance score • Priority improvement suggestions • Full interview transcript review • Interview history and progress tracking • Multiple difficulty levels (Easy, Medium, Hard) • Try it instantly as a guest — no account required Whether you're an MBA student preparing for recruiting season or a professional targeting a consulting career, Rehearse Coach helps you build confidence and master the case interview format. Practice makes perfect. Let's begin.