Hourly DSA: Interview Prep

Build your coding interview instincts, one short session at a time.

Hourly DSA helps you learn data structures and algorithms through bite-sized lessons and quick practice. Recognize common patterns, think through code, and understand why an answer works.

LEARN A LITTLE, EVERY DAY
- Explore short lessons with guided examples and practice questions. Track completed lessons and pick up where you left off.
MAKE EVERY BREAK COUNT
- Take on a five-question daily set or practice a specific topic. Short prompts and tap-to-answer choices fit naturally between classes, meetings, and whatever comes next.
SPOT THE PATTERN
- Learn when to reach for a hash map, two pointers, sliding window, binary search, and more. Build confidence choosing an approach and understanding why it fits.
THINK THROUGH THE CODE
- Predict the output of short snippets, reason about time and space complexity, and spot common misconceptions. Get immediate feedback and a clear explanation after every answer.
BUILD ON WHAT YOU LEARN
- Review missed questions, practice weaker topics, and track your progress. Earn badges and keep your streak going as you build a daily habit.
KEEP PRACTICE CLOSE
- Add Home Screen and Lock Screen widgets to keep questions, interview patterns, and your streak in sight.
TOPICS INCLUDE
- Arrays and hash maps, two pointers, sliding window, stacks, binary search, linked lists, trees, heaps, backtracking, graphs, and dynamic programming.

Whether you're preparing for a software engineering interview, studying computer science, or refreshing the fundamentals, make room for a little DSA every day.

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Hourly DSA requires a subscription for practice and widgets. Choose annual with a 7-day free trial for eligible subscribers, or monthly without a trial. Both plans include every topic, unlimited practice, missed-question review, weak-topic drills, progress, and widgets.

After the annual trial, your subscription automatically renews at the annual price shown before purchase unless you cancel at least 24 hours before the trial ends. Monthly subscriptions start at purchase and renew monthly. Manage or cancel your subscription in your App Store account settings.

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