Aritmo vs Chess Openings

Train your brain to calculate faster with short, structured mental math lessons. Aritmo teaches rapid calculation techniques through focused lessons, interactive practice, and gamified challenges. Instead of memorizing random tricks, you learn step-by-step methods for solving arithmetic problems more efficiently in your head. LEARN MENTAL MATH STEP BY STEP Aritmo is designed to help you build real calculation skills through progressive courses and practice exercises. In this first version, Aritmo includes two main learning paths: • Basic Multiplication Learn the Trachtenberg method for rapid multiplication with numbers from 2 to 11. This course introduces the core patterns and rules used to multiply faster mentally. • General Multiplication Learn a broader multiplication method for solving more flexible multiplication problems. This course is available with an active subscription. The app clearly identifies which content is included and which content requires a subscription before purchase. PRACTICE WITH SHORT DAILY LESSONS Each concept is broken into simple lessons that can be completed in a few minutes. You can learn a method, practice it immediately, and repeat challenges to build speed and confidence over time. Aritmo helps you practice: • Fast multiplication techniques • Mental arithmetic without a calculator • Number patterns that simplify calculations • Focused repetition for stronger recall • Progressive exercises that increase in difficulty GAMIFIED BRAIN TRAINING Aritmo turns mental math practice into a structured daily challenge. You can: • Progress through lessons • Complete practice exercises • Build learning streaks • Track your progress • Improve your speed through repetition WHO IS ARITMO FOR? Aritmo is useful for: • Students who want stronger arithmetic skills • Adults who want to sharpen their mental calculation ability • Puzzle and brain-training enthusiasts • Anyone curious about rapid mental math methods • Learners who want structured practice instead of random math tricks SUBSCRIPTION INFORMATION Aritmo offers optional in-app purchases. The Basic Multiplication course is available in the app. The General Multiplication course requires an active subscription. Subscription availability and terms are shown clearly in the app before purchase and are managed through your Apple ID. You can use Aritmo to start learning mental multiplication techniques and upgrade only if you want access to the additional subscription course. Start training your mental math skills with Aritmo. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://melbot.com.br/privacy.html

LEARN CHESS OPENINGS BY PLAYING THEM Most apps make you watch. Prologue makes you play. You learn every opening by making the moves yourself — the only way they actually stick when you sit down for a real game. No more freezing on move 3. Build a repertoire you can trust. THREE STAGES TO REAL MASTERY • Guided — follow the correct moves and learn the plan • Hinted — play with a gentle nudge when you hesitate • From memory — recall the whole line on your own An opening isn't "learned" until you can play it blind. 300+ OPENINGS, ALL VERIFIED • Every line checked against real chess databases • Tagged by real popularity across 8.2M games • Learn what people actually play — not obscure theory BUILD YOUR OWN REPERTOIRE • White attacks and Black defenses, side by side • Pick your gambits, your defenses, your style • Everything in one place, ready for your next game REMEMBER IT FOR GOOD • Spaced-repetition review brings lines back at the right time • Daily training keeps your repertoire sharp • Turn "I studied it once" into "I know it cold" DESIGNED TO BE CALM • Elegant, minimal, distraction-free • Made for adult club players (600–1600) who want a real plan • Learn at your pace, one move at a time START FREE The entire Italian Game family is free, forever. Try the full method, then unlock all 300+ openings. PROLOGUE PREMIUM • 7-day free trial • Then €39.99/year or €9.99/month • Unlocks every opening, full repertoire tools, and spaced-repetition review Payment is charged to your Apple ID. Subscriptions renew automatically unless canceled at least 24 hours before the period ends. Manage or cancel anytime in your App Store account settings. Stop watching. Start playing. Build the opening repertoire you've always wanted. Privacy Policy: https://prologuechess.com/en/privacy/ Terms of Use (Apple standard EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/