Coding Interview vs Brevia

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

Brevia teaches data structures and algorithms from zero — calmly, one idea at a time — then helps you remember them for good. Most resources throw a wall of theory or an endless queue of problems at you. Brevia is different: a guided journey that explains each concept in small, focused cards, checks your understanding with a quick question, then uses spaced repetition so what you learn actually sticks. WHAT'S INSIDE • A guided journey from Foundations to Advanced — Big-O, two pointers, recursion, binary search, sorting, trees, graphs, dynamic programming and more. • Bite-size lessons, one idea per card: concept, intuition, a worked example, a pro tip, a quick checkpoint and a recap. • Adaptive quizzes that meet you at your level and grow as you do. • Spaced repetition and streaks, so concepts move into long-term memory instead of fading. • A Big-O complexity reference for fast re-orientation. • Visual mindmaps for every topic. • "Learn how to learn" tips grounded in real cognitive science. CALM BY DESIGN No noise, no endless feeds, no pressure — just a clear path, a gentle pace and progress you can feel. A COMPANION TO YOUR PRACTICE Brevia is the understand-it-first layer: the calm on-ramp before you grind problems on LeetCode and friends. Learn the idea here, then go apply it with confidence. FREE, NO CATCH Brevia is completely free — no ads, no subscriptions, no paywalls. If it helps you, an optional Tip Jar lets you support development. Entirely up to you. Your progress syncs privately across iPhone and iPad with iCloud. No accounts, and Brevia collects no personal data.