16Word: Vocabulary Builder

Build a vocabulary that sticks — 16 new words a day in about 5 minutes, with spaced repetition and a Tetris break between answers so the words actually stay.

Learn a new language 16 words at a time.

16Word helps you build a vocabulary that actually sticks — in about 5 minutes a day. Learn 16 new words, lock them in with active recall and spaced repetition, and take a quick Tetris break between answers so your brain stays fresh and the words stay put.

WHY 16 WORDS? 16 words a day is roughly 5,800 a year — about the size of a working vocabulary in a new language. Small daily reps, big yearly results.

HOW IT WORKS • Learn 16 words per level with flashcards — type or speak your answer. • Clean correct answers earn Tetris pieces; a quick game every few words keeps you sharp. • Spaced repetition resurfaces words right before you'd forget them. • Short timed tests prove what you've really remembered.

FEATURES • Many languages to learn from, with native pronunciation audio. • Speak your answers with voice input. • Synonyms accepted — answer in your own words. • Streaks, achievements, and a leaderboard to keep you motivated. • Works offline (paid plans) so you can learn anywhere. • Syncs across your devices.

PLANS Start free. Upgrade to Basic or Premium for unlimited daily words, offline mode, and more. Subscriptions are billed through your Apple account; manage or cancel anytime in Settings. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Download 16Word and start building your vocabulary today.