Invest in Algorithmic Mastery.
Master asymptotic analysis, data structures, and LeetCode-grade problem solving with zero-install browser execution, real-time memory visualizers, and non-leaking Socratic guidance.
Free Starter
Essential foundations to experience zero-install interactive learning.
- Stage 0 Foundations (3 full modules)
- 10 curated starter problems
- In-browser Pyodide Python & Node JS execution
- Socratic AI Coach (3 inquiries / day)
- Interactive Concept Mind Maps
- All 24 Modules & 220+ Lessons
- 116+ Curated Interview Problems
- Memory Visualizers (VizPlayer)
- Full Algorithmic Cheatsheets & Pattern Traps
- Timed Mock Interview Mode
Pro Lifetime
One payment, unrestricted lifetime access to every module, problem, visualizer, and AI coaching.
- All 24 Modules & 220+ Lessons
- 116+ Curated Interview Problems (Blind 75, NeetCode 150)
- Unlimited Socratic AI Coach (no solution spoilers)
- Interactive Memory Visualizers (VizPlayer)
- Complete Cheatsheets with 60+ Pattern Traps
- 5-Stage Interactive Progression Roadmap
- Dual In-Browser Runtimes (Python WASM & Node JS)
- All Future Modules Included (Next.js, System Design)
- Challenge Peers with Custom Complexity Limits
- Timed Mock Interview Mode
Interview Accelerator
For engineers preparing for upcoming technical screen loops at Tier-1 & FAANG companies.
- Everything included in Pro Lifetime
- Timed Mock Interview Mode with strict asymptotic checks
- Sub-500ms AI Reasoning Latency
- Printable PDF Algorithmic Battlecards (24 modules)
- Expensify & Concur Compliant Corporate Invoice
- 1-on-1 Code Review feedback on 5 target solutions
- Priority Feature Requests & Roadmap input
- Shared workspace progress tracking (up to 3 seats)
100% Risk-Free 7-Day Money-Back Guarantee
Experience the interactive tracers, problem sandboxes, and Socratic coach. If your algorithmic intuition and problem-solving speed don't noticeably level up in 7 days, get a full, prompt refund with no questions asked.
Expensable with your learning stipend: Most engineers expense leetExpert via Concur, Expensify, or corporate educational budgets.
Common Questions
Frequently Asked Questions
Is this really a one-time purchase, or is there a recurring subscription?
leetExpert Pro and Accelerator are 100% one-time purchases. You pay once and own permanent lifetime access to all 24 current modules, future module expansions, problem updates, and runtime enhancements with zero recurring fees.
How does the Socratic AI Coach work without spoiling solutions?
Unlike generic chatbots that output full code, our coach isolates the failing invariant or mathematical edge case (e.g. 'Notice what happens when k > len(nums)'). It guides your mental model toward the optimal time/space bounds without giving away the answer.
Can I get this reimbursed by my employer's learning budget?
Yes. Most software engineers expense leetExpert using their annual education, conference, or professional development stipends. We provide itemized, VAT/GST compliant receipts with company name details.
How do Python and JavaScript run in the browser without setup?
We compile real Python 3.12 via WebAssembly (Pyodide WASM) and execute modern JavaScript/TypeScript in isolated V8 browser workers. Unit tests execute client-side in milliseconds with zero servers, zero Docker containers, and zero latency.
What is your refund policy?
We offer an unconditional 7-day money-back guarantee. If leetExpert does not noticeably elevate your algorithmic confidence and problem-solving speed, simply email us for a prompt, courteous full refund.