SwiftMath vs lemma

SwiftMath is the mental gym for ambitious minds. Built for professionals in finance, consulting, and analytics, SwiftMath trains you to calculate faster, think sharper, and perform under pressure. Whether you’re preparing for: • consulting interviews • finance roles • trading • MBA exams • or simply want to sharpen your number sense SwiftMath pushes your brain beyond school math. What you’ll train: • Fast mental arithmetic • Business & financial calculations • Estimation & number intuition • Speed and accuracy under pressure Why SwiftMath works Most math apps train correctness. SwiftMath trains performance. Just like in real business, you must: • think fast • stay accurate • perform under time pressure SwiftMath simulates that environment. Free vs Pro Free: • Easy mental math mode Pro: • Advanced business & finance drills • Higher difficulty levels • Pressure-based challenges • Unlimited training Train your brain like an elite athlete trains their body. Subscription Information SwiftMath Pro is an auto-renewable subscription. • Title: SwiftMath Pro (Weekly) • Length: 1 week • Price: Shown in-app and varies by region Payment will be charged to your Apple ID account at confirmation of purchase. Subscriptions automatically renew unless canceled at least 24 hours before the end of the current period. You can manage and cancel subscriptions in your App Store account settings. Terms of Use (EULA): https://thomasvanos.github.io/OSDevelopment-SwiftMath/terms Privacy Policy: https://thomasvanos.github.io/OSDevelopment-SwiftMath/privacy-policy

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/