Practice DSA
without the noise.
LeetCode tells you pass/fail. NeetCode shows you the answer. Neither tells you why you froze when you knew it. We do.
Sketch the plan.
Before the editor unlocks, write the pattern, the algorithm in three lines, the complexity target, and the confidence. The interview moment starts here.
Mark the moment you stall.
Three keys: Blank, Stuck, Lost. One tap, no modal — capture what your brain just did, then keep coding.
Recorded silently with line number + timestamp. Re-rendered on the timeline.
A coach that names the failure.
The AI reads your sketch, your code, and your signals — then tells you which of pattern_mismatch, implementation_drift, or edge_case_blindness just happened.
You named the pattern instantly and your O(n) target was correct.
Your sketch used two pointers, but the code reached for a nested loop.
→ Hold the sketched plan through one minute of doubt.
Twelve owned patterns = senior ready.
Stop blanking in interviews.
Start your first attempt — the loop is the same for problem #1 and problem #1000.
Start Practicing