lemma vs Thuztra Learn

Train like a quant. Daily. Lemma is the focused, no-fluff prep app for quantitative interviews — built for students and grads targeting Jane Street, Citadel, Optiver, Two Sigma, and the rest of the trading-firm gauntlet. WHAT'S INSIDE WITH YOUR SUBSCRIPTION • Daily sprints — bite-sized timed sets of mental math, probability, combinatorics, expected value, and market-making problems • Per-category ELO — your skill is tracked across 10 disciplines, from Novice to Expert • Adaptive difficulty — problems chosen to keep you at the edge of your level, not above or below • Hints + step-through solutions — get unstuck without giving up • Streaks, XP, leagues — habit loops without the noise • Achievements — unlock as you grind • Leaderboard — see how you stack up WHO IT'S FOR • CS / math undergrads applying to trading firms • Recent grads prepping for technical interviews • Self-learners who want a daily quantitative-thinking habit • Anyone curious about how trading interviews actually feel WHY LEMMA We strip out the gamified clutter and keep what matters: hard problems, fast iteration, real numbers on your progress. The interface borrows more from a Bloomberg terminal than a typical mobile game — monospaced metrics, hairline borders, dark by default. Most prep books drown you in 800 pages. Most courses lock you in for months. Lemma is 10 minutes a day, sharpened every day. — Lemma offers an optional auto-renewable subscription for unlimited daily sprints and premium problem sets. Subscriptions auto-renew unless cancelled at least 24 hours before the end of the current period. Manage or cancel anytime in your Apple ID settings. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://rogeru13.github.io/lemma-legal/privacy-policy/

Train like a quant. Thuztra Learn is the daily practice app for quantitative finance: trading, research, and the interviews that gate both. - Puzzles and brainteasers with worked, honest solutions - Real interview questions: probability, stochastic processes, markets - Mental math trainer: timed trading-floor drills with streaks and daily sets - A structured curriculum from foundations to econophysics and ML - Maths reference: Ito, Black-Scholes, GARCH, Kelly, and the models that matter - Jupyter notebooks members can download and run themselves - A glossary that says what terms actually mean, and resources with honest verdicts Built by Vansh Dhawan (@quant.dhawan) for everyone serious about markets: interview candidates, traders, and independent researchers. Pick your track and the app adapts its emphasis; neither track hides anything from the other.