Paste notes, drop a PDF, or pick a topic pack — DeckDuel builds a quiz on your iPhone with Apple Intelligence, then lets you duel a friend sitting right next to you.
Download on the App Store Requires iPhone with Apple Intelligence (iPhone 15 Pro or newer)Paste text or import a PDF. DeckDuel reads it, writes grounded multiple-choice questions, and verifies every answer — all without leaving your phone.
Host a match over local Wi-Fi or Bluetooth. No servers, no lag, no sign-ups. Joining a friend's match is always free.
Nothing you study ever leaves your device. No analytics harvesting your notes, no cloud processing, no account.
Notes, textbook chapters, PDFs, or one of 10+ built-in topic packs.
Apple's on-device model writes and fact-checks questions in seconds.
Race the timer alone, or go head-to-head with a friend in the same room.
DeckDuel tracks what you miss and rebuilds rounds around it.
Unlimited decks and rounds, all topic packs, weak-spot practice, and full match history. Subscriptions auto-renew until cancelled; manage anytime in your App Store settings.