Memory Trainer vs Sumday

Span helps you practise remembering the number sequences that matter in everyday life. Start with a short measure in the same order and in reverse order, then train with a focused daily session built from three exercises: • recall digits in the same or reverse order • hold a sequence in mind while counting backwards • remember a six-digit verification code through a short distraction Your records stay personal. Span shows your own measurements and progress over time without rankings, percentiles, or medical claims. Training data stays on your device, and no account is required. FREE ACCESS • Initial number-recall measure • First daily session of the day • Personal records • Grouping lesson SPAN PREMIUM • Additional daily sessions • Free practice in same-order, reverse-order, and verification-code modes Span Premium is available as an annual or weekly auto-renewable subscription. Prices, billing periods, and any introductory offer are shown by the App Store before purchase and may vary by country. You can manage or cancel your subscription from your Apple Account settings. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://www.michaeldardol.com/span/privacy/

Five minutes a day to get your mental math back. Sumday is a quiet daily routine for adults: real arithmetic, not puzzles, that keeps your number sense sharp. The more we rely on calculators and spreadsheets, the slower the math in our head gets. Sumday wakes it up with one short set a day that mixes addition, subtraction, multiplication, division, percentages and estimation. Learn one practical math trick a day, the kind school never taught you, and feel your speed come back. WHO IT'S FOR • Adults who feel their mental math isn't what it used to be • Anyone preparing for aptitude or job tests with timed number questions • People who want to split a bill, work out a discount or estimate a total in seconds • Anyone looking for light daily brain training HOW IT WORKS 1. Solve today's set of 20 questions. Five minutes is enough. 2. Check your results: accuracy and response time, compared with yesterday. 3. Unlock today's technique card and use it in tomorrow's set. 4. Come back tomorrow. A daily reminder keeps your streak going. FEATURES • Today's set: 20 mixed arithmetic questions across 7 types: addition, subtraction, multiplication, division, percentages, estimation and everyday math • Adaptive difficulty: questions get harder as you improve and ease off when you get stuck (12 levels) • Daily technique cards: 30 mental math tricks, from rounding shortcuts to quick percentages • Results report: accuracy, average response time and change since yesterday on one screen • Progress charts: daily and weekly trends in accuracy and speed • Streaks and a gentle daily reminder NO ACCOUNT, NO SERVER No sign-up needed. Your records stay on your device, and it works in airplane mode. PREMIUM (OPTIONAL) A one-time purchase removes ads and unlocks 3 practice modes (estimation, percentages, everyday math), Challenge mode (endless survival with 3 lives), detailed statistics and all 30 technique cards. No subscription. Available in English, Korean and Japanese. Start your five minutes of math practice today.