Fermi vs CaseXcel

An app to determine how good your estimation and problem solving skills are. This includes three different difficulties: Easy, Casual, and Advanced. You may find many similar questions asked in real competitions which is quite useful as this app will give you an advantage among peers. If you have any further questions or suggestions for the improvement, please feel free to contact our email which is located at the bottom of our privacy policy page.

Land your McKinsey, Bain, BCG, or Big 4 consulting offer. CaseXcel trains the 5 mental skills consultants test - every day, in under 10 minutes. Top candidates don't win because they memorize frameworks. They win because they think clearly under pressure. CaseXcel makes that practice fast, structured, and addictive. DAILY TRAINING • Mental Math - multiply, divide, percent, and ratio drills at consulting speed • Case Math - profitability, revenue, and growth calculations under time pressure • Market Sizing - Fermi-style estimation with structured top-down breakdowns • MECE Structuring - multiple-choice drills that build issue trees the right way • Framework Recall - Leitner-style flashcards for Porter's, 4Ps, 3Cs and more REFERENCE LIBRARY A clean, read-only set of consulting frameworks and case patterns to scan between drills. No videos. No fluff. BUILT FOR • MBB candidates (McKinsey, Bain, BCG) • Big 4 strategy (Deloitte, EY, PwC, KPMG) • Tier-2 firms (Accenture, Kearney, Oliver Wyman, Roland Berger) • MBA students prepping consulting recruiting • Anyone facing case-based assessments WHY CASEXCEL • One session a day is free - no signup, no account • Premium unlocks unlimited sessions and the full library • No fake AI feedback. No bloated 'learn' modules. Just reps. Train daily. Think clearly. Land the offer. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/