nub: Daily Vocabulary

ub delivers one industry term a day — right on your lock screen. You already read about a field you care about: AI, finance, health, politics, history. But some terms never quite land. You skim past "context window" or "quantitative easing" for the tenth time, still not sure you could define it if someone asked. nub fixes that, one word at a time. HOW IT WORKS Pick a field. Take a 30-second placement check so nub skips what you already know. From then on, one new term appears on your lock screen every day — no app to open, no notification to dismiss, just there when you glance at your phone. Tap it, and you get the full picture: a plain-English definition in the context of your field, a real sentence showing how it's actually used, and related terms to build out your understanding. NOT ANOTHER TRIVIA APP nub isn't fun facts or a game. Every term is something you'll actually run into reading the news, a newsletter, or a report — and the goal is comprehension, not points. Terms are ordered from foundational to advanced, so you're building real fluency in a field's vocabulary over time, not collecting random facts. FIVE FIELDS TO START • AI — context windows, hallucination, fine-tuning, and more • Finance & Crypto — quantitative easing, DeFi, subprime, and more • History — the big forces and eras that shape how the world works • Health & Wellness — inflammation, biomarkers, glycemic index, and more • Politics & Civics — continuing resolutions, filibusters, and the process terms behind the news Finish a field, and nub nudges you to start the next one. BUILT FOR THE LOCK SCREEN The lock screen widget is the whole idea — the highest-value real estate on your phone, turned into a few seconds of real learning a day instead of another glance at nothing. nub is free to use. No account required, no ads.