Quick Recall
Last-minute interview prep that actually works
490+ flashcards covering SQL, Python, Statistics, ML & LLMs — prioritized by what interviewers actually ask
Three steps to confidence
Configure
Choose your available time and target role. Our scoring algorithm automatically prioritizes cards by interview frequency, role relevance, and difficulty — so you always start with what matters most.
Review
Each card covers exactly one concept — with a clear explanation, code example, and interview tip. Cards are ordered by how frequently they appear in real interviews.
Focus
Rate your confidence on each card. Anything marked "Review Later" comes back until you've got it — so nothing slips through the cracks.
Built on research, not hunches
Active Recall (Testing Effect)
Roediger & Karpicke's research: testing yourself strengthens neural pathways far more than passive re-reading.
Adaptive Review Loops
Cards you mark "Review Later" resurface until you're confident. No concept slips through the cracks.
Cognitive Load Theory
Each card focuses on exactly one idea. Based on Miller's research — your working memory can only hold a few items at once.
Interview Frequency Scoring
Cards ranked by: interview frequency (50%), role relevance (30%), and difficulty level (20%) — based on real interview data.
Every card backed by real interview data
Each card is built from in-depth web research across every topic and subtopic — analyzing real interview questions, frequency patterns, and what top companies actually ask. Content is reviewed and updated monthly.
How We Research
- Sourced from publicly available and shared interview questions across top data science hiring platforms
- Frequency scores based on how often each topic appears across real interviews for 6 data roles
- Published hiring guides and recruiter insights from top tech companies
- Community feedback from working data scientists and engineers
Time-Based Selection
Our algorithm fits the highest-priority cards into your available time:
Build your personal Favorites deck
Star any card during a session to save it. Before your interview, launch a Favorites-only session to review just the concepts that matter most to you — the ultimate last-minute revision tool. Sign in to unlock.
Ready to ace your interview?
Free. No signup required. Start reviewing in under 30 seconds.