CaseGrade vs Yikou

Land your consulting offer. CaseGrade is built for candidates targeting McKinsey, Bain, BCG, Deloitte, Accenture, EY, and the rest of the MBB + Big Four pipeline. The mobile app gives you drills, frameworks, and a practice system that adapts to your target firm and round — so your prep hours go where they move the needle. What's inside • Mental Math Drills — Timed arithmetic and percentage calculations. Build the reflexes case interviewers look for in the first 30 seconds of a quantitative question. • Quantitative Case Math — Pricing, profitability, breakeven, NPV, and financial ratios. Each problem traces a realistic case setup; you practice the math that actually shows up in a BCG round two. • Market Sizing — Structured estimation problems from top-of-funnel ("How many coffee cups are sold in Chicago per day?") through segmented market builds. • Synthesis — Practice delivering CEO-ready recommendations, one-line answers, risk callouts, executive summaries, and key takeaways. The single weakest link for most candidates. • Structures & Frameworks — Drill MECE issue trees on real case prompts. Build the muscle memory for a clean structure in the first 90 seconds. • Brainstorming — Timed creative-ideation practice. A surprisingly common round-two sub-question that candidates rarely prepare for. • Learn Section — Concepts, industry primers, and framework references you can open between drills or at the start of prep. Lightweight audio explainers on the go. Adaptive practice Set your target firms and interview date once. CaseGrade surfaces the content most relevant to how that firm actually interviews — and sequences it against your calendar so you ramp naturally toward round day. Track your progress • Daily streak and comeback-freeze so one missed day doesn't erase your momentum • Percentile rank vs other candidates targeting the same firms • Best-score history on every drill • Skill report that flags the weak quadrant you should hit tomorrow Built for how you actually study Between classes. On the train. The 15 minutes before a mock. Every drill is sized for a real-life session, and your progress syncs across all your devices so you can pick up exactly where you left off. Pricing Start free. Every drill category has at least one unlocked problem. Upgrade to Ascend for 75% of the full library, or Apex / Partner Track for everything plus advanced features like Framework Builder and Speed Round. Subscriptions renew automatically; cancel anytime in your App Store settings. Privacy We collect only what's needed to run your account and track your progress. We do not sell data. Full details at casegrade.io/privacy. Support Questions, bug reports, or feature requests: support@casegrade.io or (872) 216-5699. Get in. Get an offer. Let's go. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://casegrade.io/privacy

Learn Mandarin one useful bite at a time. Yikou brings pronunciation, vocabulary, grammar, speaking practice, and short readings into one calm learning path. START WITH THE SOUNDS Explore the four tones, 23 initials, and 24 finals. Tap any sound or example to hear Mandarin audio, then use the tone quiz to check what you recognize. BUILD A PRACTICAL FOUNDATION Work through 30 units with 959 words, lesson texts, short readings, and quizzes. Review 141 grammar points with examples when you need a clearer explanation. SPEAK, LISTEN, AND RESPOND Practice 26 useful phrases and 13 dialogue scenes. On iPhone or iPad, choose the microphone to receive transcription-based, character-level feedback on a phrase you say. KEEP CHINESE CURRENT Browse 28 slang terms and memes, 50 short stories, and 50 original fictional mini-news items created for reading practice. MADE FOR MORE LEARNERS The interface and learning content are available in English, Korean, Japanese, Thai, German, and Russian. Current version: free, with no ads, account, subscription, or in-app purchase. An internet connection is required to load lessons and media.