Memorion vs (Open Source) Mental Math

Memorion is your daily brain workout — a beautifully crafted collection of cognitive training games designed to sharpen your memory, improve focus, and accelerate your reaction time. Built on principles from cognitive science, Memorion makes mental fitness fun, fast, and effective. Just 5 minutes a day is enough to start seeing real progress. WHAT YOU GET • A growing library of mini-games targeting memory, attention, logic, and speed • Daily challenges that adapt to your level • Detailed progress tracking with visual stats and streaks • Personalized tips to keep your brain in top shape • A clean, distraction-free interface — no ads, no clutter SEAMLESS CROSS-DEVICE EXPERIENCE Memorion syncs your training progress, personalized statistics, and Premium subscription across all your devices. Start a session on iPhone, continue on iPad, and review your stats on the web — your data follows you everywhere. Your account also enables AI-driven insights based on your full training history, helping you identify patterns and track improvement over weeks and months. WHY MEMORION • Quick sessions that fit into any schedule • Designed for adults of all ages — from busy professionals to seniors • Track real improvement over weeks and months • Sync your progress across iPhone, iPad, and the web • No invasive tracking, no spam, no nonsense MEMORION PREMIUM Unlock the full experience with Memorion Premium: • Unlimited daily sessions • Advanced statistics and personalized insights • Exclusive game modes and difficulty levels • Early access to new games • Support a small indie team committed to building great software Subscriptions are billed monthly or annually. Payment is charged to your Apple ID at confirmation of purchase. Subscriptions automatically renew unless turned off at least 24 hours before the end of the current period. You can manage and cancel subscriptions in your App Store account settings. PRIVACY FIRST We don't sell your data. We don't show ads. We collect only what's needed to run the app, and you can delete your account and all your data at any time directly from the app. Privacy Policy: https://shark-app-xwrrf.ondigitalocean.app/privacy Terms of Service: https://shark-app-xwrrf.ondigitalocean.app/terms Questions or feedback? We'd love to hear from you: support@zevora.com

A free, open-source mental math trainer. No ads, no paywalls, no locked content — every exercise and difficulty is included. Sharpen your arithmetic with quick timed tests, custom drills, and a library of mental-math tricks. Everything runs offline and your progress stays on your device. FEATURES Timed Tests A daily 60-second challenge plus sprints, a two-minute marathon, per-operation tests, and a hard mixed test — at four difficulty levels, each with best scores. Custom Trainer Pick a number domain (Times tables, Natural, Decimal, Money, Huge), choose one or more exercises, and set per-exercise difficulty from Easy to Super hard. All the Operations Addition, subtraction, multiplication, division, squares, square roots, fractions, percentages, and modulo. Mental Math Tricks Dozens of step-by-step tricks for faster addition, subtraction, multiplication, division, and squares — with worked examples and favorites. Practice Any Trick Every trick comes with a 60-second drill built for it: × 11 drills, squares ending in 5, numbers near 100, and more. Magic Square A number puzzle: make every row, column, and diagonal add up to the same total. Four levels, from 1-9 up to bigger number sets. Progress Tracking Solved totals, accuracy, best run, daily streak, longest streak, and a weekly activity view. Fast Sessions An on-screen keypad with instant answer checking and haptics. No ads. No paywalls. No account required. 100% Open Source The complete source code is public - see it, audit it, or contribute at https://github.com/Open-Apps-Studio/mental-math