Braindex

Learn AI, one word at a time.

Braindex is a daily AI vocabulary game. Six new AI terms each day, with 20 seconds to answer each.

The AI world is moving quickly. Braindex is the tiny daily habit that helps you keep up — whether you're a student, a business owner, an employee, a curious parent, or someone working in technology who'd like to challenge friends.

──────────────────────────────

HOW IT WORKS

──────────────────────────────

• Open Braindex. See today's six words.

• For each word, pick the correct definition from four options.

• You get 20 seconds per word.

• Score 0–1000 based on accuracy and speed.

• New words appear every day at the same time.

That's the game. Just six words, two minutes, done.

──────────────────────────────

STREAKS

──────────────────────────────

Play each day to build a streak.

──────────────────────────────

PLAY YOUR WAY

──────────────────────────────

• Play as a guest — no account needed

• Or sign in with email, Google or Apple if you'd like to sync

your streaks and appear on the leaderboard

• Delete your account whenever you want, from Settings

──────────────────────────────

A FEW WORDS ON PRIVACY

──────────────────────────────

Braindex only collects what's needed to make the game work — your display name and email if you sign in, plus your gameplay results so streaks and the leaderboard function.

Full privacy policy: https://braindexapp.com/privacy-policy.html

Delete your account: https://braindexapp.com/delete-account.html