Fin pushes. Coco encourages. Both remember every rep.
LeetCode taught you to solve it silently. Fin and Coco make you explain it out loud — and flag the gaps before a real interviewer does.
Free to try. No signup.
$350 once. Three months. No subscription. The coaches remember every rep.
The difference
Every rep builds memory. $350. One-time. No subscription. No scheduling. No starting over.
What that looks like
Session 1 · Mon
Fin: “Stripe onsite in 4 days. That BFS rep took you 23 min — slow, but the logic held. I'll keep that.”
Session 2 · Thu
Fin: “Stripe's onsite is tomorrow. Last BFS was 23 min — today we cut it to 17.”
Three days apart. No re-explaining. Fin kept the company, the number, and the plan — and picked up exactly where you left off.
See it in action
One problem. Real-time feedback on your approach, not just your code.
Fin
Coach · Two Sum
Fin
Alright, Two Sum. Take a moment to read it — what's your first instinct?
You
Brute force: two loops, check every pair until the target hits.
Fin
Good. Walk me through it.
How it works
No dashboard theater. One real rep — pick it, solve it out loud, and hear the gap an interviewer would catch.
Fin
Alright — Two Sum. Read it, then tell me your first instinct.
Start from the exact lists candidates already trust: Blind 75, NeetCode 150, Grind 75, and company-tagged reps.
You
Brute force first — two loops, check every pair. Then a hash map gets it to one pass.
You code it and explain it out loud, just like the real thing — because the speaking is what interviewers are actually scoring.
Fin
You jumped to the hash map and never said the trade-off. Out loud, that reads as luck, not reasoning.
Then you get the blunt version of what an interviewer would notice: where you rushed, where signal dropped, what to fix next.
Coverage proof
177
public interview problems ready to browse
3
trusted lists mapped into one library
Blind 75
Core patterns, fast signal.
Learn
Most tree-round failures are not recursion bugs. They are helper-contract bugs. Here are the engineers, textbooks, and open-source trees that teach the return-value discipline tree rounds actually grade on.
DP is a compression problem, not a recursion trick. Ask one question — what does the future need to know from the past? — and state, recurrence, and iteration order fall out. Here are the engineers and open textbooks that teach it.
BFS and DFS are the same algorithm with a different container. That reframe, plus five shape-names, covers most graph coding rounds. Here are the engineers and open textbooks that taught it.
Free 7-Day Practice Primer
One email a day for seven days. Learn what to say before and after the code, then decide if you want live coaching with Fin and Coco.
FinPressure habits
CocoCommunication shapeStart with the Two Sum. Free. No signup required.
