Stop forgetting
what you learn.

Two-thirds of this will be gone by tomorrow.

You understood it. You even took notes. A day later two-thirds of it is gone — and you have no idea which two-thirds. badNerd brings each thing back at the moment it is about to fade, which is the whole difference between the two lines below.

Look a word up once. Then stop looking it up.

Learn a language on the things you already want to read — the news, a novel, a thread you fell into at midnight. Tap a word you do not know and the AI translates it where it stands, keeps the sentence you met it in, and builds the card. Any of 32 languages, in either direction.

Three questions. Most people get one.

None of them are trick questions. They are just the parts of learning that work backwards from how it feels — which is exactly why almost nobody does them by hand.

One link in. Everything about it, in one place.

Right now a good video ends up in four places: a summary you skimmed, a tab you kept open, a note you wrote somewhere else, and a vague feeling that there was something about anchoring. None of them know about each other, and none of them come back.

Same object, five ways in. The chat only knows this video — it cannot wander off into the open web and answer confidently about something the speaker never said. And when you are working through a stack of them, the timer runs beside it, because that is the difference between an hour of studying and an hour with a video open.

A second brain you can actually talk to.

One recap is useful. Two hundred of them is something else: everything you have saved becomes searchable by meaning, linked to what you already know, and answerable in plain language — across the whole library rather than one source at a time.

Built for people who are paid to keep learning.

Not students cramming for a date. People whose field moves faster than they can reread it — and whose useful knowledge is currently sitting in a tab they will never reopen.

• Engineers

  The talk you'll never rewatch

  Forty-five minutes on a distributed systems failure becomes eight cards. Six months later, when the design review turns into exactly that argument, you have it — instead of a bookmark calledwatch later.

• Designers

  The principle, not the screenshot

  You saved the case study for the layout. What you actually needed was the rule underneath it — and that is what comes back in the review, in the words the author used to explain it.

• Product managers

  A new domain every quarter

  Twelve hours of industry reading before kickoff, and by the time scope is being argued you are down to a vague feeling. The vague feeling is the part badNerd replaces.

• Founders

  Five jobs at once

  Hiring, pricing, sales, taxes, and whatever broke this week — all of it half-absorbed from podcasts at 1.5×. Five minutes a day keeps the half that turns out to matter.

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

Two findings have survived a century of replication. Testing yourself beats rereading it — the testing effect. Spreading those tests out beats doing them in one sitting — the spacing effect. Everything badNerd does is those two, applied to material you never got around to making cards for.

Anki proved the method works. It also proved almost nobody sustains it: the technique charges you an evening of card-writing for every hour of learning, and that bill is why most people quit in the first month.Removing that evening is the entire product.

Questions, answered.