Large Math Drill vs BankerBee

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.

Built by Yale students, BankerBee is the mobile-first way to learn investment banking. Made for students, career-switchers, and anyone prepping for finance interviews. Do you doomscroll before bed? Got a commute or a coffee break? That's enough time to make real progress toward your investment banking offer. Most IB prep tools just throw flashcards at you. BankerBee starts with 40+ units in a structured curriculum that walks you through the fundamentals: accounting, valuation, M&A, LBOs, behaviorals. Concepts build on each other instead of feeling like a random pile of facts. Then 1,500+ flashcards of technical interview questions lock in what you learned and get you ready for your superday. It’s the same bite-sized, daily habit format that makes language learning apps so easy to stick with. What’s Inside? - 120+ guided lessons across accounting, valuation, M&A, LBOs, and behaviorals - 1,500+ flashcards based on real interview experiences at Goldman Sachs, Evercore, Bank of America, and more - Mistake Journal that tracks what you actually got wrong, so you review smarter, not harder - Search across every lesson, flashcard, and mistake in the app - Leaderboard so you can see how you stack up against candidates recruiting nationwide Try It Free, No Account Needed! Get started with 18 lessons free, no credit card or account required. Already paying for another IB prep tool? Switch to BankerBee and get your first month free! Just forward proof of your active subscription to switcher@bankerbee.com Download BankerBee and start learning IB the smart way today. --- Disclaimer: BankerBee is not affiliated with, endorsed by, or sponsored by Goldman Sachs, Evercore, Bank of America, or any other banks mentioned by name. Terms of Service: https://bankerbee.com/terms Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://bankerbee.com/privacy Reach us at: contact@bankerbee.com