Mental Math Tricks vs Arcana

MathMind teaches you real mental math techniques - not gimmicks, not drills you'll forget tomorrow. Learn the same shortcuts used by mathematicians, chess players, and memory athletes to calculate faster than a calculator. 30 PROVEN TRICKS, 7 CATEGORIES: Master techniques across every major area of mental arithmetic: - Multiplication: square numbers ending in 5, multiply by 11, multiply two-digit numbers instantly - Division: divisibility rules, divide by 5, divide by 25 - Squares and roots: square any two-digit number, estimate square roots - Percentages: the percentage flip trick, tips in seconds, compound growth - Fractions: convert, compare, and calculate - Addition and subtraction: round-and-adjust, left-to-right addition - Advanced: day of the week for any date, digit sums, cube estimation THREE WAYS TO LEARN: LEARN - Each trick has a clear explanation, worked examples with step-by-step walkthroughs, and a "Why does this work?" section that shows the underlying math. PRACTICE - Drill any trick with infinite auto-generated problems. Track your accuracy, streak, and solve time as you improve. CHALLENGE - Timed tests across all tricks you've learned. Compete against your own best. Take the Daily Challenge - the same problems for everyone, every day. BUILT FOR REAL PROGRESS: - Speed graphs: watch your solve time drop week by week - Day streaks: build a consistent practice habit - Category breakdown: see exactly where you're strong and where to focus - Combo multipliers: chain correct answers for bonus scoring - Haptic feedback and smooth animations HONEST PRICING: MathMind is free to download with 5 foundational tricks unlocked. Unlock all 30 tricks with a single one-time purchase - no subscriptions, no ads, no data collection, ever. PRIVACY FIRST: Your progress stays on your device. MathMind has no accounts, no sign-ups, no analytics, no trackers, no ads. Nothing leaves your phone, unless you manually share it. Whether you're a student preparing for exams, a professional who wants to run mental calculations in meetings, or just someone who enjoys training their brain - MathMind gives you the tools to think faster. Download and start learning in seconds!

Arcana teaches mental math the way a good language app teaches a language: one technique at a time, practised until it's fast, and brought back just before you'd forget it. Every technique is a spell. Multiply any number by 11 in your head. Square 65 in two seconds. Work out a 15% tip before the waiter comes back. Name the day of the week for any date in history. Each spell starts with a worked example, one step at a time, then one you fill in with help, then a drill that adapts to you, so every problem is just hard enough. FROM TIMES TABLES TO MATHEMAGIC Eight ranked realms, 58 spells in one continuous ladder: • Initiate: number bonds, adding through ten, and the times tables with a trick for each • Novice: × 11, squares ending in 5, left-to-right adding and subtracting, × 25 • Apprentice: 2-digit × 1-digit, numbers near 100, the teens • Scribe: the Trachtenberg digit rules for × 3 to × 12, and checking answers by casting out nines and elevens • Alchemist: squaring any 2-digit number, the criss-cross method, factoring • Oracle: dividing in your head, fractions, and the cycle of the sevenths • Sorcerer: 3-digit × 2-digit, cubes, and squares of up to five digits • Mathemagician: the day of the week for any date, cube roots and square roots on demand Plus two side tracks: Everyday (percentages, tips, discounts, sales tax, the rule of 72) and Estimation. BUILT TO STICK • Spaced repetition decides when each spell comes back, so you keep what you learn without cramming. • Grades come from your answers and your speed. Nobody self-rates. • Miss one and you see the trick worked step by step on that exact problem. • Rank trials at the end of each realm. Already know your tables? Test out and skip ahead. • Speed duels: 60 seconds against your own best. • A daily goal, a streak, and streak freezes that forgive a missed day. PRIVATE AND OFFLINE No account, no ads, no tracking. Everything stays on your iPhone and works without a connection. ARCANA PRO Initiate and Novice, the first three Everyday spells, and reviews and duels for everything you've learned are free, for good. Arcana Pro opens the other six realms, every rank trial and both side tracks. Family Sharing is included. • Yearly: $24.99 a year, with a 7-day free trial for new subscribers • Lifetime: $49.99, once Prices are in US dollars and vary by country. Payment is charged to your Apple Account at confirmation of purchase, or when the free trial ends. The subscription renews automatically unless it is cancelled at least 24 hours before the end of the current period, and your account is charged for renewal within 24 hours before the end of the period. Manage or cancel it any time in your Apple Account settings. Terms of Use: https://almasappsllc.github.io/arcana-terms.html Privacy Policy: https://almasappsllc.github.io/arcana-privacy.html