LeetBook: AI Study Companion for LeetCode

About

🚀 LeetBook — Your AI-Powered LeetCode Companion

Stop losing track of your LeetCode progress. LeetBook automatically captures every accepted submission and builds a personal knowledge base — so you can focus on solving, not note-taking.

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✅ AUTO-TRACK SUBMISSIONS
Every accepted solution is captured instantly — code, language, runtime, memory, and timestamp. No copy-pasting. No manual logging. Just solve and go.

🤖 AI-POWERED STUDY NOTES
Get instant AI analysis on every submission:
  • Key algorithm patterns identified
  • Step-by-step dry-run walkthrough
  • Time & space complexity breakdown
  • Markdown-formatted notes you can review anytime
  Powered by Groq (bring your own API key — stored locally, never on our servers).

🏷️ PATTERN RECOGNITION
Organize problems by 50+ algorithm patterns — Two Pointers, Sliding Window, Dynamic Programming, BFS/DFS, and more. See which patterns you've mastered and where you need practice.

🔍 ADVANCED SEARCH
Query your problem library like a pro:
  • Filter by difficulty, pattern, topic, tags
  • AND/OR logic with operators like "in", "not in", "contains", "is empty"
  • Multi-select chip picker for bulk filtering
  • Save and reload your favorite queries

📊 STATS & INSIGHTS
Visual breakdown of your progress — problems solved by difficulty, pattern coverage, and submission history.

🌗 DARK & LIGHT MODE
Beautiful Google Material design with full dark mode support. Follows your system preference or set it manually.

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🔒 PRIVACY FIRST
  • API keys are stored locally on your device — never transmitted to our servers
  • Sign in with Google — your data is yours
  • No ads, no tracking, no data selling

📖 HOW IT WORKS
  1. Install & sign in with Google
  2. Head to LeetCode and solve problems as usual
  3. Open the LeetBook side panel to review your solutions, AI notes, and patterns

Works in the side panel for quick access, or open in a full tab for a wider view.

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Perfect for:
  • Interview prep
  • Competitive programming practice
  • Building a personal algorithm reference library
  • Reviewing and revising past solutions

LeetBook — Solve smarter, not harder. 📚