Coding Interview — Algo Mind

AlgoMindApp

In-app purchases

About this app

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
• 90 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 Google Play account settings.

Privacy Policy: https://www.algomind.app/privacy.html
Terms of Use: https://www.algomind.app/terms.html

What’s new

Code solutions in 4 languages: Python, Kotlin, Java and C++ across the catalog.

A fresh app icon and a redesigned, personalized onboarding.

Browse: filter by your bookmarks, or by several companies at once.

Cheatsheets: animated walkthroughs are now interactive, with quick check-your-understanding quizzes between steps.

Plus bug fixes and performance improvements.