Master knowledge that matters through scientifically-designed spaced repetition. Philosophy, history, money, science, and life skills — remembered forever.
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Philosophy
12 cards due
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Learning reimagined for people who want to actually remember what they learn.
Powered by FSRS spaced repetition — the science of 85% long-term retention vs 20% from cramming. Your brain will thank you.
Questions adapt to your knowledge level. Start where you are, grow where you want to be.
In-depth articles that go beyond the quizzes. Read like a scholar, remember like a champion.
Daily streaks, XP milestones, quests, and achievements. Shield your streak with gems. Learning becomes automatic.
Philosophy, history, money, science, and life skills. More paths unlock as you level up.
Every card verified against academic sources — Stanford Encyclopedia, NIH, IRS publications. No clickbait nonsense.
Choose your adventure. Each path is filled with verified, fascinating knowledge you'll actually use.
Everything they should have taught you in school
2,500 years of humanity's best thinking
Understand how we got here
Financial literacy that actually matters
Build scientific intuition
Your body is the only place you have to live
400 cards waiting
See the world through creative eyes
350 cards waiting
Understand yourself and others
300 cards waiting
Every quiz card is verified against academic sources — Stanford Encyclopedia of Philosophy, IRS publications, NIH, CDC, peer-reviewed journals, and more. No “fun facts” from random listicles.
Four simple steps to learning knowledge that sticks with you forever.
Pick subjects that spark your curiosity. Philosophy? Taxes? History? You decide where to start.
6 difficulty levels mean questions adapt to you. No frustration, just the right challenge.
FSRS schedules reviews at optimal intervals. You'll remember what you learn — for life.
Every day you learn, you get smarter. Streaks, XP, and achievements keep you coming back.
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