Clear the bar at your target company.
LoopCoach plugs into your existing practice, measures you against your dream company's bar, then helps you clear it.
No LeetCode account?Create a targeted training plan
Mastery
- Import LeetCode history for a baseline
- Glicko-2 based ratings for each solve
- Measured across 36 topics
- Problems just above your level
Better practice
- Socratic hints
- Big-O checks versus optimal
- Practice journal
- Interview-grade solution reviews
Package Locker Station
Memoization CacheLoopCoach plugs into your existing practice, measures you against your dream company's bar, then helps you clear it.
No LeetCode account?Create a targeted training plan
Supercharge LeetCodeMastery
- Import LeetCode history for a baseline
- Glicko-2 based ratings for each solve
- Measured across 36 topics
- Problems just above your level
Better practice
- Socratic hints
- Big-O checks versus optimal
- Practice journal
- Interview-grade solution reviews
Practice questions from real loops
An opinionated learning platform built by senior engineers who've landed offers at
- Interview-calibrated problems
- 190+
- Interview-calibrated problems
- From battle-tested lists like Grind 75, Blind 75 and NeetCode 150
- LeetCode problems supported
- 3,500+
- LeetCode problems supported
- Each with an in-house, granular difficulty score
- Advanced topics tracked
- 36
- Advanced topics tracked
- From arrays to union-find
- Companies calibrated
- 55
- Companies calibrated
- From Google to Jane Street
- Interview reports
- 80+
- Interview reports
- And growing every week
Practice right in LeetCode.
- A calibrated score on every problemTime, Submits, test cases and whether you landed the optimal solution.
- Picks aimed at your weak spotsThe next problem targets the topics holding you back.
- Socratic hintsA question that moves you forward, just like the real interview.
- Interview-grade reviewYour solution, graded on an interviewer's rubric.
Questions FAANG+ actually asks.
From real interview reports atand more
- Reported at GoogleMediumCar Rental Assignment
- Reported at DatabricksMediumOrdered Set
- Reported at OpenAIMediumSpreadsheet with Formulas
“Build an in-memory file system with mkdir and ls. Follow-up: report the total size of any directory.”
Generate problemIn-memory file system
- Part 1: mkdir and ls
- Part 2: directory sizes
- Test cases for every part
- Checking the reference solution…
Import your own questions
Paste a question you were asked and get a full problem: statement, test cases and a checked solution. Follow-ups become parts that build on your code.
Spreadsheet with Formulas3 parts
- Part 1Cells and formulas
- Part 2Circular referencesReject any set_cell that would make a cell depend on itself.
- Part 3Unlocks when you pass Part 2
Multi-part questions
Each part is revealed once you solve the last, just like the real interview.
How it works
Step 1:Get a baseline in seconds
Import your LeetCode history in one click, or solve a few placement problems.
Example with a sample learner's data:
Baseline ready
8 seconds- Imported from LeetCode
- 214
- solved problems
- Topics measured
- 31
- of 36, the rest fill in as you go
- Arrays82%
- Hashing76%
- Two pointers64%
- Graphs41%
- Dynamic programming28%
Step 2:See where you stand
Your mastery on 36 topics, measured against the topic mix and difficulty of the companies you're targeting.
Example with a sample learner's data:
Ready for Meta?
90%of the way to Meta's bar
Example with a sample learner:YouMeta's bar Step 3:Practice intentionally
Practice right inside LeetCode with our extension, or in our reimagined editor. Either way you get a real interview clock, Socratic hints when you're stuck, time and space complexity analysis of your solution, and a short reflection that locks in what you learned.
Two Sum
Easy0:11Hint 1
As you scan the values, keep track of information that will help with a later value.
Your solutionO(n) time·O(n) spaceOptimalStep 4:Close your gaps
Adaptive recommendations pick the problem just past your level on the topics your company asks most, pull from battle-tested study lists where they meet your target companies, and bring back what you're about to forget.
Example with a sample learner's data:
Recommended next
Coin Change
Medium · Dynamic programming · just past your level
- Blind 75
- Frequently asked at
This week
- Avg score
- 90
- +12 vs last week
- Solved
- 5
- 2 at interview pace
- Topics up
- 4
- Graphs the most
Problem Your rating Mastery Rotting OrangesMedium · Graphs Perfect +21 Coin ChangeMedium · Dynamic programming Good +14 Merge k Sorted ListsHard · Heaps Okay +6
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FAQ
Can I practice real interview problems?
Yes. Practice the questions candidates reported at your target company. Or paste in one you were asked, and we turn it into a full problem with test cases and a checked solution, follow-ups included. Yours stays private.
How is mastery measured?
Your LeetCode history places you on every topic. From there, each solve through LoopCoach is scored on the problem's difficulty, your time against interview pace, the hints you took, failed Submits and whether you reached the optimal approach, and it credits only the topics your solution used. Topics you leave alone lose certainty and have to prove themselves again. Readiness weighs it all by your target company's topic mix and difficulty.
Which companies are calibrated, and how?
55 companies, including Google, Meta, Amazon, Apple, Microsoft, Nvidia, OpenAI, Stripe, Citadel and Jane Street. We analyzed thousands of recently reported interview questions and asked interviewers at these companies what they look for. Each company's bar reflects how selective it is, across the topics it asks.
How are problems recommended?
We pick the problem just past your level, in the topics your target companies ask and you're weakest at, and bring back problems before you forget them. Working through a study list? New problems come from it first.
Can I practice on LeetCode?
Yes. Our extension works on 3,500+ LeetCode problems and brings every LoopCoach feature with it. We also built our own editor from the ground up for interview-grade practice.
Does my progress carry over between LeetCode and LoopCoach?
Yes. Practice in either place counts toward the same mastery, readiness and recommendations.
How do AI credits work?
Hints, solution reviews, complexity checks and flashcards use AI credits. Every plan comes with a monthly amount: enough for about 5 problems on Free, 30 on Train and 100 on Pro. Practice, recommendations and progress tracking never use credits.