Henri vs Mathketeers

Got something you keep meaning to understand? Henri turns curiosity into a course made for you. Tell Henri your topic and goal. Henri builds a custom syllabus, then teaches through conversation, diagrams, interactive visuals, quizzes, and knowledge cards. HOW HENRI WORKS • Pick any topic — start with the idea you want to understand. • Get a custom syllabus — a clear chapter-by-chapter plan based on your goals. • Learn by talking — lessons unfold in a natural conversation. WHY YOU'LL LOVE IT • A syllabus shaped by your answers, not a one-size-fits-all course. • Explanations and questions that adapt to your current level. • Visual explanations with diagrams, concept maps, and interactive moments. • Smart quizzes that check whether the idea really landed. • Knowledge cards that keep each lesson's key takeaways. • Daily progress so you can pick up where you left off. LEARN ANYTHING Memory science, cognitive biases, Stoic philosophy, how AI actually works, art history, everyday economics, space exploration, the science of sleep, negotiation, public speaking — and anything else you're curious about. Start learning with Henri today. Your first knowledge point is free. After that, choose whether to continue with a paid plan. Full courses and higher usage limits require a paid plan. Terms: https://hihenri.ai/terms-and-conditions Privacy: https://hihenri.ai/privacy-policy

Mathketeers is a fun, ad-free math game for kids ages 4 to 12 that turns learning into an epic adventure. Children master counting, addition, subtraction, place value, multiplication, division, and fractions by playing — not by grinding worksheets. AN EPIC KNIGHT CAMPAIGN Run, jump, and explore 100+ hand-crafted levels. Hop across giant numbered stepping-stones in order (1‑2‑3!), hit a monster that splits into smaller ones to literally SEE multiplication happen, ride moving platforms, and beat bosses — all with no reading required, so pre-readers can play on their own. CHOOSE YOUR HERO Play as the mighty Knight for free, or unlock a whole roster of heroes with the Family Pack — including a spell-casting Mage who blasts foes from a distance. 13+ MINI-GAMES Math Blaster, Grand Prix racing, Shooting Gallery, Memory Match, Balance Beam, Number Path, Robot Coder, Board Quest, and more. Nearly every one sneaks in a real math skill (plus a couple of pure-reaction brain breaks) — and it all feels like play. A REAL CURRICULUM — PRESCHOOL → GRADE 5 → BEYOND Levels follow a genuine school scope-and-sequence, so your child can start at their grade and climb. An endless "Hero League" keeps challenging kids who race ahead. • Numbers, counting & comparing • Addition & subtraction • Place value, skip counting & doubles • Times tables, division & fractions ADAPTS TO YOUR CHILD Smart difficulty quietly eases up when a child struggles and ramps up when they soar — never boring, never frustrating. Wrong answers gently teach the right one; they never punish. MADE FOR FAMILIES — SAFE & PRIVATE • 100% ad-free • No data leaves the device — nothing is collected, tracked, or shared • Parent Dashboard shows real progress by skill • Purchases and outside links sit behind a parental gate • One universal purchase: iPhone, iPad, and Mac Mathketeers is built to grow confidence and a love of numbers. The full curriculum is free to play; an optional "Family Pack" unlocks extra heroes (including the Mage), bonus coins, gear, and cosmetics — and never gates learning. Start the quest today — become a Mathketeer!