Probability Theory Foundations vs Smarter

Probability Theory Foundations is an independent study app for learners who want structured practice in core probability ideas, problem-solving habits, and exam-style reasoning. Built for students, self-learners, and anyone reviewing fundamentals, the app includes 160 questions across Fundamentals, Practical Skills, Common Pitfalls, and Advanced Concepts. Every question includes an explanation so you can understand why an answer works, not just whether it was right. Features: - FSRS spaced-repetition intervals to help review at the right time - Weak-point heatmap to spot topics that need attention - Daily challenge for consistent practice - Mock exams for timed review - Offline practice with no login required - Explanations for every question Practice offline, no login required. Independent study app for Probability Theory Foundations practice. Not affiliated with, endorsed by, or sponsored by any company, certification body, exam operator, or vendor. All trademarks belong to their respective owners.

Get a little Smarter every day — with your friends. Smarter is a tiny daily-learning game for a group of friends. Twice a day, three hand-picked topics show up. You vote on the one you want to learn about, read the short lesson that wins, and take a quick three-question quiz. Show up day after day to build a streak — and unlock the ability to propose your own topics for the group. It's the good part of the group chat, minus the noise: a shared little ritual that leaves everyone knowing something they didn't this morning. How it works • Three topics, twice a day — before bed and after you wake. • Vote on what to learn; the group's pick becomes the lesson. • Read the winner and take a 3-question quiz. • Build a streak by showing up — hit 5 days to propose your own topics. • Nudge friends who haven't voted, and invite people nearby with a QR code. • See where everyone lands on the group leaderboard. Built to be light and private • No account, no email, no password — just a group code and a name you pick. • Opt-in push reminders so you never miss a round. • No ads, no tracking, no noise. Make a group, send the link to a few friends, and learn something together every day.