Build real vocabulary, adaptively
VocaDeck infers what you know, picks the optimal next word to learn, and uses spaced repetition to lock it in. No busywork — every session moves you forward.
How it works
Intelligent vocabulary acquisition
The app finds your level
Quick adaptive probes estimate your vocabulary. The Bayesian model infers what you already know — including words you haven't seen yet, via cognates and topic structure.
Optimal word selection
The Curator picks words at the frontier of your knowledge — hard enough to be useful, easy enough to stick. No wasted time on words you already know or can't learn yet.
Spaced repetition locks it in
FSRS schedules reviews at the optimal moment before you forget. Words you struggle with appear more often; easy ones fade back naturally.
Features
Built for serious vocabulary learners
Bayesian knowledge model
A probabilistic model tracks what you know per-word. It generalises across topics and difficulty levels — so it already has a good guess for words you haven't seen.
Cognate bridges
The app knows which words resemble ones you already know from other languages. Cognates are flagged so you can anchor new vocabulary to existing knowledge.
Adaptive difficulty
Words are CEFR-calibrated from A1 to C1. The Curator targets your frontier — never too easy, never too hard.
FSRS spaced repetition
The same scheduling algorithm behind modern Anki. Adapts to your memory patterns so reviews happen right before you'd forget.
Multiple languages
Swedish, Spanish, German, French, and Turkish — each with a curated catalog of 2,000+ words. More languages coming.
Vocabulary landscape
Browse your entire word catalog by CEFR level and knowledge status. See what you know, what you're learning, and what's next.
Start learning today
Download VocaDeck on the App Store, or try the free vocabulary test to see where you stand.
Download on the App Store