No setup. No sign-up friction. Install and start learning in seconds.
Add Stemmy from the Chrome Web Store with a single click. Zero configuration needed — it works on every webpage instantly. No account creation, no email, no friction.
While reading articles, papers, ebooks, or any webpage — simply select any word and press Ctrl+E. The Ghost Card appears with a full AI-powered definition, pronunciation, etymology, and example sentences.
Words are automatically saved to your personal Vocabulary Wallet and scheduled for review using the SM-2 spaced repetition algorithm. The system adapts to your memory patterns, ensuring perfect long-term retention.
One click to install. Zero configuration. Start learning from the very first word.
No sign-up required · Works on all websites · Open source