Develop the foundational skill of every problem solver

Yes. Every problem, every worked solution, and the full archive are free — nothing here sits behind a paywall. There's no account required to solve today's problems or browse past ones. There's also a paid Premium tier for people who want more, but free daily practice isn't going away.

€12 a month, billed monthly — there's no yearly plan. Cancel anytime from your account settings; no long-term commitment.

Problems span grade 9 through grade 12 math, plus a handful of graduate-level problems for people who want a real challenge. Each day mixes difficulty — easy, medium, and hard — so there's something calibrated to wherever you're starting from. Pick your exam's curriculum and the difficulty follows that syllabus.

Ten exam tracks so far: the SAT, UK A-Level and GCSE, IB Analysis & Approaches, AP Calculus BC, US Honors, the French bac (Spé, Seconde, and Expertes), and Romania's BAC M1. See the full breakdown, with sample problems for each, on the curriculum page. More exams get added as we author enough problems to cover them properly.

The set published here each day is ten problems, worked at your own pace with no timer pushing you through it — come back the next morning for a fresh one. Inside the app it's different: you get five problems picked to sit right at your level, easing in and stretching out.

The website publishes a ten-problem set every day plus the full archive, free forever. The app adds a daily five tuned to your exact exam and level, plus streaks and topic-quiz practice beyond the daily set — a few free each day, unlimited with Premium. It's open now — a free account is all it takes.

Not right now. There's no leaderboard live on the site or in the app today. What you do get is a streak count and a score on every topic quiz, so you can see your own progress without ranking against anyone else.

Yes — every problem we've ever published lives in the archive, sorted by date with full worked solutions. Nothing gets taken down or hidden behind a login; browse back as far as you like. Same problems, same solutions, no expiration.

No. You can solve today's problems, read every solution, and browse the archive without signing up for anything. The only reason to give us your email is to get tomorrow's problems delivered each morning — and that's optional.

Most are drawn from real exam curricula — SAT, A-Level, IB, AP, and the French bac — adapted and re-worked so they train the same skills the actual exam tests. The rest are original problems we write in-house to fill gaps those curricula don't cover well. Every problem gets a full worked solution, not just an answer key.