DSAPrep.dev
Hi HN, I built a spaced repetition system for Leetcode after realizing I'd "solved" 150+ problems but couldn't recall the patterns when faced with new questions in actual interviews. The problem: Solving problems once creates the illusion of learning without actual retention. Your brain discards solutions as "one-time knowledge" unless you review them at spaced intervals. What it does: - Automatically schedules problem reviews (1 day → 3 days → 1 week → 2 weeks → 1 month, etc.) - Adjusts intervals based on difficulty (easy problems reviewed less frequently) - Highlights overdue problems that…
DSAPrep.dev launched on April 15, 2025 with 10 votes, #3,208 of 7,818 launches that month and more than 50% of that year's launches. The site was still online in September 2026, 1 year on.
What it does
Practice smarter with dsaprep.dev — a free tool to filter real DSA interview questions asked by Google, Amazon, Meta, and others. Sort by company, time range, and difficulty to focus your interview prep. Updated on weekly basis!
Solve it once. Keep it for good. DSAPrep schedules your DSA problem reviews automatically so everything you practice stays sharp through placement season. Free tier available.
In the maker’s words, at launch
Hi HN, I built a spaced repetition system for Leetcode after realizing I'd "solved" 150+ problems but couldn't recall the patterns when faced with new questions in actual interviews. The problem: Solving problems once creates the illusion of learning without actual retention. Your brain discards solutions as…
Does a similar job
all alternatives →- IMI made a spaced repetition tool to master coding problems2024 · lanki.xyz · ▲206
As you solve LeetCode questions, you can mark them as hard, medium, or easy. The tool will then recommend questions you should review based on (1) how hard the question was for you and (2) how much time has passed since you last reviewed it. I'd recommend normally attempting LeetCode problems and just marking them as hard, medium, or easy for you at first so the tool knows which problems to recommend you review! Here's the theory behind spaced repetition and learning if interested: https://www.codecademy.com/article/spaced-repetition
- CACodeRev.app – Code Review as Interview2024 · coderev.app · ▲150
I've long had a dislike for leetcode interviews on both sides of the coin. Project-based interviews can also be challenging because it can end up filtering out folks who don't want to spend several hours building something in their free time. I met up with a friend last year -- a very senior dev -- who had taken some time off to study leetcode exercises while preparing for FAANG interviews. It struck me that one of the key measures of whether a candidate is a fit for a team is rather synthetic. CodeRev.app is a simple, lightweight tool that helps teams evaluate candidates using code reviews.…
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