Features that drive real fluency
Cuatro Gatos is built on proven learning science, not gamified gimmicks. Here's how we help you master Spanish.
Spaced Repetition
Our smart algorithm tracks every word you learn and schedules reviews at the perfect moment—right before you forget.
Native Audio
Listen to thousands of audio clips recorded by native speakers, not robots, to perfect your pronunciation.
Detailed Analytics
Visualize your progress with heatmaps, mastery curves, and streak tracking that actually means something.
Contextual Learning
Learn words in sentences, not isolation. See how grammar works in the real world.
Mobile Optimized
Install as a PWA on your phone and practice anywhere, even offline (coming soon).
Real-World Vocabulary
Curated lists based on frequency analysis of Spanish television and literature.
Mastery Levels
We don't just mark a word as "known." We track your mastery on a scale from 0 to 5.
- 1New & Unfamiliar
- 2Recognized
- 3Familiar
- 5Mastered (Automatic)