Solve it once. Recall it in the interview.
Spaced repetition for LeetCode. LeetRecall brings each problem back on the day you're about to forget it — and pulls in related problems so the pattern sticks.
Free to use. Pre-loaded with a curated set of problems — a few quick questions and your first queue is ready.
What happens when you review
See how it worksYou pass Two Sum
The system queues 1–3 related problems that use the same technique. You'll see: "You passed Two Sum — can you apply the same pattern here?"
You keep failing a pattern
If you keep failing a pattern, you'll get an easier unseen problem from it — fundamentals first, instead of the same problem again.
You pass a problem 4 times over 60+ days
It's not mastered until you've proven it over months. After that, a 120-day check makes sure it stuck.
How it's different
Related problems, not random ones
Pass a problem and 1–3 related problems that use the same technique join your queue — chosen because the solutions work the same way, not because the titles sound similar.
New problems every day
New problems keep entering your queue as you go, so your review backlog never crowds out forward progress.
Start where you are
A quick self-assessment sets your first queue, and you pick a track — Foundations, Core, or Full — so day one fits your level instead of dropping all 18 patterns on you at once.
Scheduling that learns how you forget
Each problem's interval adapts to your history. The ones you find easy space out fast, the ones you miss come back sooner — not one fixed formula bolted onto everything.