Mental Math vs ClassDeck

10 minutes a day to keep your mental math sharp. Whether you're in middle school, in high school, or an adult who wants to reconnect with math, Kalc helps you forge solid mental reflexes, without cramming. Spaced repetition system (SRS): concepts you master space out over time, the ones you miss come back the next day. The method known to deliver the most learning per minute practiced. WHO IT'S FOR · UK students (Year 7-10), US students (Grade 6-9) · Other English-speaking systems (Canada, Australia, Ireland, NZ) · Spanish-speaking students (Spain ESO, Mexico secundaria/preparatoria) · French-speaking students (France, Belgium, Switzerland, Quebec) · Adults who want to get back fluency with mental math Each user picks their school system during onboarding. Content and examples adapt. WHAT KALC COVERS · Multiplication and division (times tables, decimals, signed) · Fractions (simplification, operations, fraction of a whole) · Percentages (calculation, increase, discount, compound change) · Powers and square roots · Algebra and order of operations · Addition and subtraction of signed integers TWO PRACTICE MODES · Zen mode: at your own pace, no pressure, to consolidate the basics · Chrono mode: against the clock, to build speed under exam conditions VISIBLE PROGRESS Every skill has its own level and progress bar. You see exactly where you stand and what's left to master. IN REAL LIFE Every session ends with a concrete example of how this skill serves you day to day: splitting a restaurant tab, reading a paycheck, working out a discount, planning a budget. Mental math is something you actually use. HOME SCREEN WIDGETS Track your progress straight from your iOS home screen, without opening the app. Streak, XP and skills in progress at a glance. MEASURED REMINDERS Up to 5 reminders over the first 3 weeks, off at any time. No spam, no guilt-tripping. ONE-TIME PURCHASE, NO SUBSCRIPTION Kalc is free to download (1 skill available without purchase). Full access unlocks with a single purchase (lifetime or 1 year non-renewing). No traps, no hidden paywall. PRIVACY All your data stays on your device and syncs through your personal iCloud account. No ads, no advertising tracking, no cookies. Kalc is for people who want real progress in mental math. Privacy policy: https://lmtdigitalcreations.com/kalc/privacy.html Terms of use: https://lmtdigitalcreations.com/kalc/terms.html

ClassDeck is the school planner that keeps your whole student life in one place — your weekly class timetable, homework and assignments, exam countdowns, and a full grade and GPA tracker. It works completely offline, with no account and no sign-up, so your school data stays private on your device. Whether you are in middle school, high school, college or university, ClassDeck is built to make your term calmer and more organized. Set up your subjects once, drop your classes onto a beautiful weekly timetable, and let ClassDeck show you exactly what class is happening now and what comes next. WEEKLY CLASS TIMETABLE - Build a clean weekly class schedule with subject, teacher, room and color. - A clear "now and next" card tells you which class is on and what follows. - Rotating A/B week support for schools with alternating timetables. - Tap any class to edit it in seconds. HOMEWORK & ASSIGNMENT TRACKER - Add assignments with a due date, priority and to-do, in-progress or done status. - Attach a photo of the worksheet or whiteboard and add notes. - Smart filters: today, this week, overdue, done, or everything at once. - Check off homework as you finish it and watch your workload shrink. - Optional reminders before each due date so nothing slips through. EXAM COUNTDOWNS - Add every exam and deadline and see a clear days-until countdown. - A calendar view marks every exam and deadline at a glance. - A simple revision tip helps you spread your study before the big day. GRADES & GPA TRACKER - Record marks for any grading scale: percentage, points or GPA on a 4.0 scale. - Weighted categories (exams, homework, labs) give you an accurate average. - See each subject's average and your overall GPA update instantly. - A term overview chart shows how every course is going. INSIGHTS & ACHIEVEMENTS - A consistency heatmap shows how steadily you complete your homework. - This week vs last week comparison and your best day of the week. - Personal records: best day, best week, current and longest streak. - A grade trend chart follows your marks over time. - Dozens of achievements to unlock as you stay on top of your work. PRIVATE & OFFLINE - 100% offline. No account, no login, no cloud, no tracking of your school data. - Everything is stored locally on your device. - Export and import a JSON backup whenever you want, entirely on-device. FULLY LOCALIZED - Available in English, Spanish, French, Italian, German and Portuguese. PERFECT FOR - High school and middle school students who want a simple homework planner. - College and university students juggling a class schedule and exam dates. - Anyone who wants a private student timetable and grade tracker without a subscription. ClassDeck brings your class schedule, homework tracker, exam countdowns and grade book together into one polished, distraction-free planner. Start the school year organized — add your subjects, build your timetable, and let ClassDeck handle the rest. ClassDeck is a personal study companion and is not affiliated with any school, college or examination board.