Available on iOS
Master Words.
Duel Friends.
The first vocabulary app with ranked seasons, leaderboards, and head-to-head duels. Over 9,000 words across 12 categories. Challenge friends, climb the rankings, and go from Novice to Lexicon Master.
How VocabDuel Works
Three ways to level up your vocabulary
Build Vocabulary
Over 9,000 curated words with definitions, pronunciation audio, etymology, and example sentences across 12 categories including SAT, GRE, and more.
Duel Friends
Head-to-head vocabulary duels with identical questions for both players. Duel friends by email or jump into quick play against skill-matched opponents.
Climb the Rankings
Elo-rated ranked seasons with five competitive tiers. Rise from Novice to Lexicon Master and fight for your spot on the global leaderboard.
Built for serious
vocabulary growth
Over 9,000 words across 12 categories. Multiple study modes. Real competitive play.
Word of the Day
A new featured word every day with pronunciation, definition, etymology, and example sentences.
Swipeable Word Feed
Vertical card feed with tap-to-expand details. Browse words like you browse content — fast and natural.
Multiple Quiz Formats
Multiple choice, fill-in-the-blank, definition matching, and reverse lookups to keep studying fresh.
Spaced Repetition
Smart review scheduling to revisit words at optimal intervals for long-term retention.
Audio Pronunciation
Hear every word pronounced clearly. IPA-accurate audio so you never mispronounce again.
Progress Tracking
Track words learned, quiz accuracy, current streaks, and mastery progress across all categories.
5 Difficulty Levels
Easy, Medium, Hard, Expert, and Master. Start where you are and progress as your vocabulary grows.
Study Deck & Bookmarks
Save words to your personal study deck for focused practice. Bookmark favorites for quick reference.
Better Together
Learn more when
you duel
Vocabulary sticks when there's something on the line. Challenge friends and family to head-to-head duels and make building your vocabulary a game worth winning.
Challenge any friend by email. Both players answer identical questions for a fair fight. Choose 3, 5, or 10 questions in any category.
24-hour time limit per challenge
Instant match against a random opponent at your skill level. Five questions, mixed categories, pure speed.
Skill-based matchmaking
Monthly competitive seasons with Elo ratings. Climb five tiers and fight for your spot on the global leaderboard.
Premium feature
Group Play
Daily challenges
with your crew
Create a private group with friends, family, or coworkers and compete on fresh vocabulary questions every day. Pick a category, set the difficulty, and see who tops the daily results and overall group ladder. It's the kind of friendly competition that keeps everyone coming back.
See it in action
Real screenshots from the app
12 Word Categories
From test prep to specialized fields
Over 9,000 curated words and growing