Stop forgettingforgetting
what you learn.

Two-thirds of this will be gone by tomorrow.

Not because you're lazy — because that's how memory works. In 1885, Hermann Ebbinghaus measured it: about 42% of new material is lost within 20 minutes, 66% within a day, and the curve flattens near 25% by the end of the week. A 2015 replication found the same shape. The fix has been known just as long: recall it at the right moments, before it fades.

From "watched it" to "know it" — in three steps.

1. STEP 1

   Save anything

   A YouTube link, an article, a thought. One click from the browser, or paste it in.

2. STEP 2

   badNerd distills it

   Key ideas extracted, flashcards and quizzes built, reviews scheduled. You do nothing.

3. STEP 3

   Review until it sticks

   Five minutes a day. Each card returns right before you'd forget it — then less and less often, as it becomes yours.

Bet you remember less than you think.

You've probably seen this idea a dozen times. Can you actually recall it?

Everything you save, becoming one memory.

Every idea lands in your Brain — connected to what you already know, searchable in plain language, and resurfaced right before it fades. The longer you use badNerd, the smarter it gets about what you know.

Learning a language? Same engine, applied to words.

Read anything you like. Tap an unknown word — see the translation in place, save it in one click. The card keeps the sentence you found it in and joins the same daily review. No decks, no word lists, no separate app.

Retire five apps. Keep one habit.

Reading, watching, translating, flashcards, notes — today that's five apps that don't talk to each other. In badNerd it's one pipeline with one five-minute daily review at the end.

Built for people whose job is to keep learning.

• Engineers

  Stop re-learning the same things

  Conference talks, deep-dive videos, docs — turned into cards. Interview prep that compounds instead of cramming.

• Designers

  Keep the theory, not just the bookmark

  Patterns, principles, and every great talk you've watched — retained, not saved-and-forgotten.

• Product managers

  New domain every quarter

  Frameworks and industry deep-dives that stay with you past the kickoff meeting.

• Founders

  Five jobs at once

  You're learning sales, product, hiring, and finance simultaneously. Keep all of them.

Not a hack. A hundred years of memory science — finally automated.

Three findings hold up across a century of studies: testing yourself beats rereading (the testing effect — Roediger & Karpicke, 2006), spacing reviews beats cramming (the spacing effect — Cepeda et al., 2006), and retrieval right before forgetting locks memories in. Tools like Anki proved it works — for the few with the patience to hand-build thousands of cards. badNerd's only trick is removing that work. The science does the rest.

Questions, answered.