Sincelang

Sincelang helps you build real, lasting vocabulary — not by cramming, but by remembering. Every word you learn comes back for review at exactly the right moment, using a proven spaced-repetition schedule (FSRS). Words you know well fade into the background; words slipping away resurface before you lose them. That's how vocabulary actually sticks. WHY SINCELANG • Learn by recognition — quick, focused quizzes, not endless flashcard decks • Spaced repetition that adapts to you — review right before you'd forget • Fully offline — learn on a plane, a subway, anywhere, no account required • Track your streak, daily goal, and progress at a glance • A clean Library to browse, search, and organize every word Sincelang is a personal vocabulary coach, not a flashcard app. It watches what you're forgetting and quietly brings it back — so your time goes to the words that need it. Start with a few minutes a day. Keep your streak. Watch the words add up. No account. No ads. No internet required.