preppartnr

AI-Powered Case Interview Preparation

Master McKinsey, BCG, and Bain case interviews. Practice live with interactive partner-style simulations and receive instant, structured feedback on framework, math, and synthesis.

Explore the preppartnr Ecosystem:

Home — Return to the homepage.
Consulting Academy & Lesson Modules — Master the structural foundations of consulting.
Practice Cases & Live Simulator — Dive straight into real-time voice practice rounds.
How It Works — Understand our partner-grade rubric evaluation.

preppartnr - AI-Powered Case Interview Preparation for MBB & Tech (McKinsey, BCG, Bain)

preppartnr

Consulting Market Sizing & Guesstimates Hub

The comprehensive toolkit for consulting estimation math, top-down and bottom-up market sizing frameworks, country demographic cheat sheets, and solved case examples.

Market Sizing Methodologies

Master the 4 fundamental sizing archetypes: 1. Top-Down Population Filter, 2. Bottom-Up Capacity & Unit Velocity, 3. Replacement & Installed Base Lifecycle, 4. Value-Chain & Spend Share.

Country Demographics Benchmark Tables

Essential demographic reference data for USA, UK, Germany, India, Canada, and Australia.

Solved Case Guesstimate Examples

Step-by-step calculations with MECE issue trees, assumptions, sanity checks, and partner traps.

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