LeetGrind vs Coding Interview

LeetGrind is the focused way to master the LeetCode and NeetCode 150, the essential set of data structures and algorithm problems every software engineer should know. FLASHCARDS & SOLUTIONS Every problem is a flashcard. Tap to flip between the problem statement and a detailed breakdown: approach, algorithm steps, time/space complexity, and full code solutions in Python and Java. QUIZ YOURSELF Each card includes a built-in quiz. Answer, get instant feedback showing the correct answer, and track your accuracy over time. Mark problems as Done or flag them for Review Later. SPACED REVIEW Build real retention. The app tracks which problems you've solved, which ones need review, and how many attempts each took. Come back to your flagged problems and keep drilling until they stick. STREAK TRACKING Stay consistent. The dashboard shows your current streak, best streak, daily activity heatmap, and progress ring, all at a glance. Set a daily goal and watch yourself improve. SMART REMINDERS Set notifications that remind you hourly, every 2–4 hours, or at custom times you pick. Choose which days of the week, and configure your own start/end hours. Never break your streak. ALL 150 PROBLEMS ORGANIZED Problems are grouped by category: Arrays & Hashing, Two Pointers, Sliding Window, Stack, Binary Search, Linked List, Trees, Tries, Heap / Priority Queue, Backtracking, Graphs, Dynamic Programming, Greedy, Intervals, Math & Geometry, and Bit Manipulation. PRIVACY FIRST All your data stays on your device. No accounts, no tracking, no analytics. Just you and the grind. ONE-TIME PURCHASE Unlock everything for $1.99. No subscriptions, no recurring charges, no ads. All future updates included. Problem data derived from the NeetCode 150 roadmap (MIT License, Copyright © 2022 neetcode-gh).

Algo Mind turns abstract algorithms into something you can see. Every lesson pairs a step-by-step animated visualization with synced, highlighted code — you watch pointers move, trees grow, and tables fill in until the idea actually clicks. Stop memorizing solutions; learn the patterns behind them. WATCH ALGORITHMS THINK • 164 classic problems fully animated — play, pause, and step through at your own pace • Code highlighted in sync with the animation, line by line • A live memory view shows variables, pointers, and call frames as they change • Arrays, hash maps, linked lists, stacks, queues, binary trees, tries, heaps, graphs, matrices, DP tables, recursion stacks, sliding windows, and bit operations — one consistent visual language 1,576 PROBLEMS DEEP • The full interview canon, from Two Sum to hard dynamic programming • Solutions in four languages: Python, Java, Kotlin, and C++ • Plain-language explanations, worked examples, and time/space complexity for every problem • Filter by topic, difficulty, company, or your bookmarks — and track every solve A CLEAR PATH • Eight chapters from Foundations to interview-ready, picking up exactly where you left off • 21 animated cheatsheets with nearly 500 animated steps and predict-the-next-step quizzes — perfect for a fast review the night before an interview PRACTICE THAT STICKS • Quick 5, Daily Mix, weak-spot review, or build your own session by topic, difficulty, and company • Three question types: order the steps, true/false concept checks, and 176 fill-in-the-blank code puzzles • Timed Rank Mode for when you want a little pressure STAY ON TRACK • Daily streaks that count any learning activity • XP and per-topic progress tracking • Bookmarks and optional study reminders • Full dark mode • Core lessons work offline • No ads, ever START TODAY A selection of sample problems, puzzles, and cheatsheets is free. An optional Algo Mind Premium subscription unlocks the full library. Subscriptions renew automatically and can be managed in your App Store account settings. Privacy Policy: https://www.algomind.app/privacy.html Terms of Use: https://www.algomind.app/terms.html