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Written by Vamsi Narla
Founder of Revarta | Ex-Google, Amazon, Remitly

Best Interview Prep App for Consulting in 2026: Honest Comparison

An honest comparison of the best interview prep apps for consulting in 2026, including Revarta, CaseCoach, MBA Crystal Ball, RocketBlocks, and PrepLounge. Built around what consulting interviews actually test — case + fit + behavioral.

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The consulting interview is two interviews in one: the case (60-70% of evaluation) and the fit/behavioral round (30-40% but disproportionately decisive at MBB). Most "best app for consulting interviews" lists default-recommend case-only platforms and skip the half that closes the offer.

After 1,000+ interviews conducted across roles including consulting hiring at top firms, here's the honest comparison. The bottom line: for the fit, PEI, and behavioral rounds that decide whether you get the MBB offer, Revarta is the best interview prep app. For pure case drilling, layer RocketBlocks or PrepLounge on top.

Quick start: Try Revarta free — practice "tell me about a time you led a team through ambiguity" or a McKinsey-style PEI story and hear hiring-manager-grade feedback on the leadership and personal-impact signals.


What consulting interviews actually test

Before comparing tools, the framing. Consulting interviews split into two halves:

Case (60-70% of total evaluation):

  • Structured problem-solving (frameworks: profitability, market sizing, market entry, M&A)
  • Math fluency under pressure (mental math at speed, no calculator)
  • Business intuition (sanity-checking numbers, recognizing patterns)
  • Communication (synthesizing findings, presenting recommendations crisply)

Fit / Behavioral (30-40% but decides the offer):

  • McKinsey PEI: leadership, personal impact, entrepreneurial drive (three specific traits, each with a story)
  • BCG: leadership, achievement, problem-solving in real life
  • Bain: culture-fit, "would I want to be staffed with this person"
  • Tier-2 (Deloitte, Accenture, Strategy&, Kearney): variations on the same themes

Senior candidates and experienced hires get evaluated more heavily on the fit/behavioral half. The case is table stakes — pass it and you're in the funnel; fail it and you're out. The fit round is where offers are decided.


Quick comparison

AppBest forCase depthFit/behavioral depthPrice
RevartaFit + PEI + behavioral rounds (the rounds that decide MBB hiring)Out of scopeHiring-manager-grade$49/mo
RocketBlocksCase structure drilling + math practiceExcellentLight$99-299
PrepLoungePeer-to-peer case practice + question bankVery goodMidFree + paid
CaseCoachCourse-based case curriculumVery goodMid$399+
Management ConsultedFree case content + paid coursesGoodLightFree + $597

1. Revarta — Best for the fit / PEI / behavioral rounds that decide consulting hiring

What it is. A general AI interview coach with hiring-manager-calibrated feedback. Built by a former Google, Amazon, and Adobe hiring manager who has run 1,000+ interviews. The behavioral feedback layer is calibrated against what hiring managers actually weight — the same signals MBB partners and consulting principals evaluate in the fit/PEI rounds.

Why it wins for consulting fit/behavioral. Consulting-specific platforms optimize for case content. Revarta optimizes for coaching depth on the rounds that decide the offer. The Story Builder layer helps you mine your experience for the consulting-specific behavioral themes:

  • McKinsey PEI — Leadership. Stories where you led without authority, drove a group toward a goal, navigated team conflict.
  • McKinsey PEI — Personal Impact. Stories where you persuaded a skeptical stakeholder, changed someone's mind on a hard decision.
  • McKinsey PEI — Entrepreneurial Drive. Stories where you started something, took initiative without being asked, drove change.
  • BCG / Bain — Achievement. A meaningful accomplishment with quantified impact, stakeholder navigation, and personal stretch.
  • All firms — "Why consulting / why this firm." The fit answer that filters out generic candidates.
  • All firms — failure / mistake stories. Where ownership and learning are the real signals.

For each, you practice the answer out loud, get honest feedback on what a partner would actually think, and refine across multiple sessions.

What's out of scope. Case math drilling is not Revarta's primary product. Pair with RocketBlocks (best for case structure) or PrepLounge (best for peer cases) for that half.

Pricing. $49/month for unlimited practice, or $129 for 90 days. Free JD Decoder and Tell Me About Yourself Builder.

Best for. MBB candidates, tier-2 consulting candidates, MBA candidates targeting consulting, lateral consultants prepping for senior-level interviews, anyone whose offer hinges on the fit/PEI/behavioral half.

Try Revarta free — practice one PEI or fit story →


2. RocketBlocks — Best for case structure drilling

What it does. Self-paced consulting case interview prep platform. Strong for case structure, math, and framework drilling. Used by candidates at MBA programs and undergrad consulting clubs.

Strengths. Best in market for case structure drilling. Solid math practice. Good library of case prompts with feedback rubrics. Fast onboarding.

Limitations. Self-study format; no real coaching layer for behavioral. Light on PEI-specific story building. Best as a case-side supplement.

Pricing. $99-299 depending on plan.

Best for. Case math and structure practice, especially for first-time consulting interviewers.


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3. PrepLounge — Best for peer-to-peer case practice

What it does. Peer-to-peer case practice platform — match with another candidate, take turns being interviewer. Plus question banks and case studies.

Strengths. Free peer practice tier. Real human conversation for cases. Active community. Good case library.

Limitations. Peer feedback quality varies wildly. Behavioral coaching is light. Scheduling friction.

Pricing. Free peer + paid premium ($59-99/mo).

Best for. Free case reps, late-stage prep when you need peer dress rehearsals.


4. CaseCoach — Best for course-based case curriculum

What it does. Structured course-based platform for consulting case prep, founded by ex-McKinsey consultants.

Strengths. Comprehensive case curriculum. Strong on framework teaching. Good for first-time candidates learning cases from scratch.

Limitations. Course-heavy format requires self-discipline. Premium pricing. Light on behavioral.

Pricing. $399-799 depending on plan.

Best for. First-time consulting interviewers who want a structured curriculum + practice.


5. Management Consulted — Best for free strategic content + paid courses

What it does. Free articles on consulting recruiting + paid courses ($597+).

Strengths. Free articles are excellent for understanding the consulting recruiting landscape, MBA-on vs MBA-off paths, networking strategies.

Limitations. Reading-based learning, not interactive. Paid courses overlap with CaseCoach.

Best for. Recruiting strategy and landscape education before you start interviewing.


What about ChatGPT for consulting?

ChatGPT can run cases at a basic level but it has three structural limitations:

  1. Case math under pressure. ChatGPT can do case math, but the pressure-and-pacing of a live case is what you're practicing for. Reading ChatGPT's math doesn't build the muscle memory.
  2. Framework expectations. McKinsey expects MECE structure. BCG expects hypothesis-driven approach. Bain expects pragmatic synthesis. ChatGPT doesn't reliably know firm-specific expectations.
  3. Behavioral / PEI feedback. ChatGPT's agreeable defaults give you "great answer!" on PEI stories that real partners would reject. The feedback loop is broken from the start.

For case math drilling, use RocketBlocks or peer practice. For PEI and behavioral feedback, use a coach calibrated to hiring outcomes. Why ChatGPT can't prepare you for interviews →


How to prepare (8-12 week plan for MBB)

Weeks 1-2 — Foundation.

  • RocketBlocks or CaseCoach for case structure and frameworks
  • Read Management Consulted articles for recruiting landscape
  • Identify your 3-5 PEI / fit story candidates from your experience

Weeks 3-6 — Case drilling.

  • 4-6 cases per week with RocketBlocks or peer practice
  • Math drilling daily (mental math, percentages, growth-rate calculations)
  • Track patterns: where do you keep stumbling? Industry blind spots? Math speed? Synthesis?

Weeks 5-8 — PEI / behavioral story building.

  • Revarta Story Builder. Mine your experience for the leadership, personal impact, entrepreneurial drive stories (McKinsey PEI) or the leadership/achievement/problem-solving stories (BCG/Bain).
  • Voice-practice each story 3-4 times. Get honest hiring-manager-grade feedback. Refine.
  • Practice "why consulting / why this firm" until it sounds genuine, not generic.

Weeks 9-12 — Integration and pressure.

  • Daily 30-60 minute mock sessions: alternate cases and fit
  • 2-3 peer mocks per week (ideally with current consultants if accessible)
  • Final week: light review only. Don't burn out.

For experienced hires (banking, strategy roles), compress to 4-6 weeks total — your structured-problem-solving foundation is already there.


Common consulting interview questions to practice

Behavioral / Fit:

  1. Walk me through your résumé / tell me about yourself
  2. Why consulting / why this firm
  3. Tell me about a time you led a team (PEI Leadership)
  4. Tell me about a time you persuaded someone skeptical (PEI Personal Impact)
  5. Tell me about a time you took initiative without being asked (PEI Entrepreneurial Drive)
  6. Describe a time you handled a conflict
  7. Walk me through a meaningful achievement
  8. Tell me about a failure or mistake
  9. Where do you see yourself in 5 years
  10. What questions do you have for me

Case prompts to drill:

  1. Profitability: Our client's profits are declining — diagnose why
  2. Market sizing: How many [thing] are sold in [country] annually
  3. Market entry: Should client X enter market Y
  4. M&A: Should client A acquire company B
  5. Pricing: Should client raise/lower prices on product X
  6. Operations: Client's operations are inefficient — find the savings

For each behavioral question, the question behind the question is what partners actually weight. PEI specifically is a structured exam — the partner is checking three traits and rating you against rubric. Practicing surface answers without rubric-aware feedback is what kills MBB candidates with strong cases.


Bottom line

For 2026, the best interview prep app for consulting is Revarta for the fit, PEI, and behavioral rounds that decide MBB hiring — paired with RocketBlocks or PrepLounge for case math drilling.

The math: $49 for one month of Revarta unlimited practice plus $99-299 for RocketBlocks is roughly 0.02% of a 3-year MBB analyst comp package. For MBA candidates, it's a fraction of one month's tuition. The ROI is unambiguous.

Try Revarta free — practice one PEI story →


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Vamsi Narla

Built by a hiring manager who's conducted 1,000+ interviews at Google, Amazon, Nvidia, and Adobe.