IdeaAddiction vs Erudity

FOR BRAINS THAT WANT MORE One fascinating idea per day. Rigorously sourced. Carefully curated. Designed to stick. Then we cut you off. The limit is the point. Curiosity works better when you're hungry. Most apps want you scrolling forever. IdeaAddiction wants you thinking about one thing all day—then coming back tomorrow for more. FREE TIER: WHAT YOU GET • One curated, surprising fact every day • Real sources—every idea links to scholarship, journalism, or primary documents • Rate each idea and track your streak • No feed. No scroll. No algorithm. PRO TIER: IDEAADDICTION PRO ($4.99, one-time) Unlimited ideas. Full archive. Feed whenever you want. IdeaAddiction is for people who already consume podcasts, Substacks, and Wikipedia rabbit holes—but want it concentrated, curated, and ritualized. People who quote things at parties. People who send screenshots to group chats. Feed your brain.

Ever said “I've always wanted to learn that” and never got around to it? The secrets of movie magic. How jazz found its sound. Why cities look the way they do. Pick something you've been curious about, and Erudity builds you a course to explore, one small topic at a time. A starting point that makes sense. Answer a few questions about what you already know. Your responses help shape where the course begins and what it covers, so you can spend more time discovering the parts that interest you. The next steps, already mapped out. A constellation of connected topics unfolds against a night sky. Each star is somewhere to begin or something to come back to. See what you've explored, find your next topic, and watch new branches appear as you learn. Your curiosity has a map of its own. Small enough to finish. Interesting enough to return to. Each topic is a short deck of question-and-answer cards. Pause over a question, flip for the answer, and swipe to see what comes next. Work through a deck in a short sitting, or leave it waiting for your next quiet moment. Every card has a longer story. Sometimes a detail is the most interesting part. Tap a highlighted word for its meaning, or open a Deep Dive to explore the explanation behind the card: the history, the mechanism, the connections. Keep the things worth coming back to. Save favorite cards, revisit what you've read, and follow your progress through levels, streaks, and milestones. The discoveries you want to remember have somewhere to stay. Make it yours with Premium. Erudity includes limited free access to try creating courses and learning from their cards. A Premium subscription provides broader access to courses, topics, and Deep Dives, plus controls to skip topics you already know or steer away from those that aren't for you. Available in English, Spanish, German, French, Portuguese, Russian, Japanese, and Simplified Chinese. The world is your syllabus. Eligible users can try the annual plan free for seven days. The trial converts to a paid subscription unless canceled. Subscriptions renew automatically unless canceled at least 24 hours before the current period ends. Manage or cancel your subscription in your App Store account settings. Terms of Service: https://erudity.app/support/terms Privacy Policy: https://erudity.app/support/privacy