Candidates track prep in hours. Interviewers do not. Forty minutes of chart drills and forty minutes of a live case both feel like "practice," but they move different scores. RocketBlocks is built as a skill gym. CoachNed is built as a scored interview rehearsal. Mixing those jobs up is how people stay busy for six weeks and still freeze on the close.
The thesis: pick the product that matches the leak on your last full case, not the product that feels most productive. After this piece you should be able to choose one subscription for the next fortnight, run a simple payback check, and stop paying for two tools that do the same hour of work.
What each product is actually for
RocketBlocks' consulting page leads with drills: problem structuring, mental math, charts and data analysis, plus brainstorming, concept reviews, and optional human coaching. That is deliberate. Their case library page says targeted drills are the most effective way to build foundational skills, and full cases are mainly for tying sections together.
CoachNed is the other polarity. The core loop is a full case (typed or live voice), a seven-dimension AI debrief, then drills pointed at the named leak. Everything on the platform is open for seven days with no card; after that you pay either a Season Pass at $120 for 90 days or Pro at $49 per month, with a 14-day no-questions refund. The library is 64 original cases, 550+ drills, and firm-style simulators (Casey, CCA, PEI, and related assessments).
They solve different weekly calendars.
| Job | RocketBlocks (as of 2026-09-24) | CoachNed (as of 2026-09-24) |
|---|---|---|
| Isolated math / chart / structure drills | Core product; unlimited case-style math; chart and structuring modules with Expert sample answers | 550+ drills plus free Quick Math; useful, not the brand reason to subscribe |
| Full spoken case with dimension scores | AI voice mocks and self-paced cases exist in the case library; feedback leans toward Expert/model answers | Live voice interview (~18 min) with a seven-score debrief is the center of the product |
| Firm assessments (Casey, CCA, SOVA-style) | Not the primary job | Dedicated simulators on the platform |
| Human 1:1 coaching | Listed a la carte on the homepage at about $200/hr; coach booking shows $110 / $150 / $225 per hour by tier | Not sold as a coach marketplace; AI rehearsal plus optional private coaching elsewhere |
| Sticker price | $35/month or $155/year, 7-day free trial | Free week, then $49/month or $120 for 90 days |
RocketBlocks is cheaper on a pure annual gym subscription. CoachNed is more expensive per calendar month if you only need drills, and cheaper than stacking RocketBlocks plus a separate case platform plus assessment packs if you need the full interview loop.
The interviewer sheet does not grade "drills completed"
McKinsey's interviewing page describes the problem-solving interview as a client-style scenario used to evaluate analytical thinking and approach. Firms do not publish a public scoring sheet that awards points for "completed 80 chart items." In the room I am listening for whether you can open cleanly, drive a hypothesis, do the math without losing the narrative, and close with a recommendation that fits the ask.
Drills raise the ceiling on one of those moves. They do not prove you can chain them under interruption. That is why a candidate can be excellent on RocketBlocks math and still fail a first round: the leak was synthesis or communication, and the gym never graded it.
Ned's rule. If your last full case named the same leak twice, buy the gym for that skill for three days. If the leak keeps rotating, stop collecting drill streaks and sit another scored full case.
A worked week: same candidate, two calendars
Invented figures, reproducible on a napkin. Maya has 12 days until first rounds. She can spare about 90 minutes a day. Her last peer case ended with slow exhibits and a mushy close.
Calendar A (gym-heavy). Sixty minutes of RocketBlocks charts/math, thirty minutes of notes. Over 12 days that is roughly 12 hours of isolated skill work and zero scored end-to-end interviews. Her exhibit speed will likely rise. Her close will not get a grade until the real interviewer hears it.
Calendar B (interview-heavy with targeted gym). Three full CoachNed voice cases across the 12 days (~18 minutes each plus debrief), with the remaining time on whatever dimension the debrief named. If Monday's debrief says charts, Tuesday through Thursday are chart drills (CoachNed or RocketBlocks). Friday is another full case. Total full interviews: three. Total drill hours: still most of the calendar, but attached to a named leak.
Rough cost for those 12 days if she already used both free trials:
| Path | Approximate cash out | What gets graded |
|---|---|---|
| RocketBlocks monthly only | $35 | Drill accuracy vs Expert answers; AI/self-paced cases if she uses them |
| CoachNed Pro month | $49 | Full-case dimensions every session; drills optional |
| Both | $84 | Overlapping gym hours; only one product should own the chart work |
If Maya's only remaining problem after two full cases is "minutes per exhibit," RocketBlocks alone is the rational buy. If she has never finished a scored full case, starting in the gym is the expensive form of comfort.
Where RocketBlocks is the better fit
Be fair. RocketBlocks earned its reputation on volume and specificity. Algorithmically generated math means you do not run out. Chart work is a named product surface, not an afterthought. Structuring drills come with sample answers from their Expert panel of McKinsey, BCG, and Bain contributors. Concept reviews exist for people who need the mini-lesson before the clock starts. Peer practice PDFs and a peer marketplace help if you want a human partner without hiring a coach. Human Experts for mock interviews are available when you want a person on Zoom.
Pick RocketBlocks-heavy when:
- Every full-case debrief says the same quantitative thing: slow math, missed units, chart tourism.
- You already open and close competently and need stamina, not a new interviewing habit.
- Budget is tight and you want a year of gym access near $155 instead of month-to-month case tools.
- You specifically want their Expert sample answers as the comparison set.
CoachNed will not "beat them on every chart item." We will not claim a larger exhibit library. Their gym job is real.
Where CoachNed is the better fit
Pick CoachNed-heavy when:
- You cannot yet run a full interview as one coherent performance: open, hypothesize, analyze, synthesize.
- You want a voice rehearsal that scores communication, not only content.
- You need firm assessment surfaces (Casey chatbot style, CCA numericals, PEI follow-ups) in the same login as cases.
- You want drills chosen because a debrief named the leak, not because the home screen suggested "do more math."
The offer, stated plainly: everything open for seven days, no card; then $120 for a recruiting season (90 days) or $49 a month; 14-day refund if it is not useful. Sixty-four original cases. Live voice with a seven-score debrief. Five hundred fifty-plus drills. Casey, CCA, and PEI simulators for the parts of the process that are not a partner-led case.
What we will not claim: that we replaced RocketBlocks for every quantitative personality, that we have 10,000 chart items, or that AI feedback equals a strong human coach for every candidate. If you want a former EM on Zoom grading your PEI, RocketBlocks' coach marketplace (or another coach) is the right tool for that hour.
Pricing without the fog
Compare jobs, then price.
RocketBlocks, from their public homepage as of 2026-09-24: $35 per month or $155 per year, both with a 7-day free trial. Drills and concept reviews sit in the subscription. Expert coaching is a la carte; the marketing line is about $200 per hour, and the booking page lists Early / Mid / Experienced tiers at $110 / $150 / $225 per hour. A candidate who wants "the gym plus two Expert mocks" is not paying $155; they are closer to $155 plus a few hundred in coaching.
CoachNed: free week with the full product open; then Season Pass $120 for 90 days or Pro $49 per month; 14-day no-questions refund. Cases, drills, voice, and assessment simulators sit in that paid access.
Payback example you can redo with your own dates. Recruiting window: 10 weeks. Need: two full cases per week plus light drills.
- CoachNed Season Pass: $120 for 90 days covers the window. Effective cost about $12 per week.
- RocketBlocks annual: $155 for the year. Effective cost about $15.50 per week if you use it for three months and then discard, or about $3 per week if you amortize a full year.
- Stacking both for 10 weeks: roughly $120 + (10/4)*$35 if on RocketBlocks monthly, or $120 + a share of $155. Only do this if the jobs do not overlap.
The failure mode is dual subscriptions "to be safe" while both products are used for the same Tuesday chart hour.
A calendar that does not double-pay forever
Monday: one CoachNed voice interview. Read the seven scores. Write the single worst dimension at the top of a sticky note.
Tuesday to Thursday: twenty to thirty minutes on that dimension only. Use CoachNed chart/math drills or RocketBlocks, not both. If charts are the leak and you prefer their exhibit trainer, that is a legitimate RocketBlocks week.
Friday: another full case. If charts improved and synthesis is now the leak, stop the chart gym. The gym is a prescription, not a lifestyle.
Practice this today
Do not buy anything yet. Sit one scored full case so the leak has a name.
- Run the five-minute first rep at /start (three typed turns, instant scores, no account required), or go straight to the live voice case at /interview.
- Write the lowest dimension in one phrase.
- If that phrase is math or charts, open /drills/charts or /drills/math for twenty minutes. Prefer RocketBlocks for this step only if you already know you like their trainer and you are past the free-week decision.
- Book the next full case three days out. Do not live in the gym between now and then.
Everything on CoachNed stays open for seven days without a card. If the product fits, Season Pass at $120 for 90 days or Pro at $49 a month; 14-day refund either way. Pricing detail sits at /pricing.
Frequently asked questions
Is RocketBlocks or CoachNed better for case interview prep?
Neither is universally better. RocketBlocks is stronger as a high-volume drill gym for math, charts, and structuring. CoachNed is stronger as a scored full-case and voice rehearsal with assessment simulators. Choose by the leak on your last complete case.
How much does RocketBlocks cost compared to CoachNed?
As of 2026-09-24, RocketBlocks lists $35 per month or $155 per year with a 7-day free trial; coaching is extra. CoachNed opens everything for seven days free, then $49 per month or $120 for 90 days, with a 14-day refund. Compare the jobs inside the price, not the sticker alone.
Does CoachNed replace RocketBlocks for math and charts?
For many candidates, CoachNed's 550+ drills and Quick Math are enough once a debrief names the leak. If you already case well and want maximum exhibit or calculation volume, keeping RocketBlocks as the specialist gym is rational.
Can I use both RocketBlocks and CoachNed?
Yes, but not for the same hour. Use one product as the interview rehearsal and, if needed, one as the temporary gym for a named skill. Cancel the overlapping subscription once the leak moves.
Does either product replace a human mock interview?
No. RocketBlocks sells Expert coaching by the hour for that. CoachNed's AI voice and debrief raise rehearsal volume between human sessions; they do not erase the value of a strong coach when the date is close and the feedback needs to be personal.
Sources
- RocketBlocks consulting interview prep — drills, concept reviews, and coaching marketing line (~$200/hr). Checked 2026-09-24.
- RocketBlocks homepage pricing — $35/month and $155/year plans with 7-day free trial. Checked 2026-09-24.
- RocketBlocks case library — self-paced cases, AI voice mocks, peer PDFs; their view that drills build foundations and full cases tie skills together. Checked 2026-09-24.
- RocketBlocks Expert coaches booking — coach tiers at $110 / $150 / $225 per hour and mock format. Checked 2026-09-24.
- Interviewing at McKinsey — official description of the problem-solving interview as a client-style analytical assessment. Checked 2026-09-24.