Recall IQ vs TradeMind

Recall IQ is a clean, focused memory trainer that tests how many digits you can recall under pressure. Numbers flash on screen, then vanish. Your job: type them back from memory. Each level pushes further more digits, more numbers, or trickier formats until your recall breaks. SIX MODES Normal modes • Single: one number appears, then you type it back. • Double: two numbers appear one after the other, then you type both together. • Chain: three short numbers appear in sequence, then you rebuild the full chain. • Multi: a configurable series of numbers appear in sequence (2–8 segments), then you type them all back in order. Special modes • Phone: memorize a full phone number (e.g. 06 78 28 39 30) and type it back. • Plate: memorize a registration plate (e.g. ER 450 AZ) letters and digits and type it back. THREE DIFFICULTIES • Easy: longer reveal times, 4 lives, and shorter starting numbers. • Normal: balanced settings with 3 lives. • Hard: shorter reveals, 2 lives, and longer starting numbers. You can also fine-tune the reveal duration with a manual time adjustment. TRACK YOUR PROGRESS A built-in dashboard shows your best scores, longest digit spans, average performance, and a session-by-session chart so you can watch your working memory improve over time. Filter between Normal and Special modes to focus on what matters to you. DESIGNED TO RESPECT YOUR TIME • No sign-up required. Just open and play. • All progress is stored locally on your device. • No social features, no leaderboards, no distractions. • A single, non-intrusive banner ad keeps the app free hidden during gameplay. Recall IQ is available in English, French, and Spanish, with automatic language detection. Whether you are a student training for mental math, a professional sharpening focus, or just someone who likes a clean brain workout Recall IQ is your daily digit gym.

Prepare for quantitative trading interviews with independent, high-pressure practice built around publicly described assessment formats. TradeMind combines timed OA-style practice, mental math, sequences, probability, market-making games, cognitive training, theory, and progress analytics in one iPhone, iPad, and Mac app. TradeMind is now available on the web. Create or sign in to a TradeMind Account to use your linked Pro access and progress across devices. CORE TRAINING FIRM-STYLE OA PRACTICE Run timed, independently created practice routes inspired by publicly described formats associated with CTC, IMC, SIG, CCI, and Wincent. Practice numerical, spatial, verbal, logic, pattern-recognition, valuation, and decision-making skills. Free users receive one fresh practice run each day; Pro unlocks unlimited runs. MENTAL MATH & APPROXIMATION Train integers, decimals, fractions, percentages, powers, rapid estimation, Taylor approximations, and the Rule of 72. Build speed with targeted drills and full timed sets. SEQUENCES Practice arithmetic, geometric, Fibonacci-style, alternating, interleaved, and look-and-say patterns with configurable difficulty. PROBABILITY & EXPECTED VALUE Work through combinatorics, Bayes’ theorem, cards, dice, poker odds, and fast expected-value decisions. MARKET MAKING Choose Play or Pass from expected value, then practise quoting two-sided markets against an adaptive counterparty. OA PREP & COGNITIVE GAMES Train with 16 original games covering working memory, attention, task switching, planning, risk tolerance, and decision-making under uncertainty. Review a clear multi-dimension profile after each battery. BRAIN TEASERS & KNOWLEDGE Study a growing library of worked quant interview puzzles and reference guides covering interview strategy, probability, stochastic processes, options, Black–Scholes, and machine learning in quantitative finance. ANALYTICS & DAILY GOALS Set a Daily Goal and review accuracy, response time, activity history, streaks, and per-question mistakes to focus the next session. INDEPENDENT PRACTICE TradeMind is an independent training product based on publicly described assessment formats. It is not affiliated with, sponsored by, or endorsed by any named firm. TradeMind does not reproduce official, confidential, or live assessment questions. Formats may change by role, region, and recruiting cycle; always check your invitation for current rules. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/