Algorithm hints,
right when you need them.
LeetCat gives you instant approach guidance, step-by-step hints, and complexity analysis for 300+ LeetCode problems — completely offline, no API keys, no data collected.
LeetCat gives you instant approach guidance, step-by-step hints, and complexity analysis for 300+ LeetCode problems — completely offline, no API keys, no data collected.
Everything you need to ace your next coding interview, one click away.
Click the extension on any LeetCode problem page and get the recommended algorithm approach in under a second.
All 302 problems are bundled inside the extension. No network calls, no API keys, no server dependencies.
We don't track you, store your data, or send anything anywhere. Your browsing stays private.
Each problem includes numbered steps walking you through the solution logic without giving away the code.
See the time and space complexity at a glance so you can evaluate your approach before coding.
Covers Blind 75, NeetCode 150, Top Interview 150, LeetCode 75, and more popular interview lists.
Three steps. Zero setup.
Add LeetCat to Chrome from the Web Store or load it as an unpacked extension.
Navigate to any problem on leetcode.com — LeetCat activates automatically.
Click the LeetCat icon to see the approach, steps, complexity, edge cases, and more.
From arrays to dynamic programming — we've got you covered.
Install LeetCat and get instant algorithm hints on every LeetCode problem.
Add to Chrome — It's Free