Stemmy - Vocabulary Wallet

The Cognitive Overlay for the Web - Highlight any word for instant AI-powered definitions

Stemmy is a vocabulary builder that turns any webpage into a classroom. Highlight any word for an instant definition with etymology, pronunciation, and examples — then save it to your personal wallet and master it with spaced repetition. ✨ Key Features for Rapid Vocabulary Growth 📖 Instant Definitions: Highlight any word for a floating "Ghost Card" overlay with definition, pronunciation, synonyms, antonyms, and etymology. (Ctrl+E) 🧬 Word DNA: Explore root morphemes, origin languages, and related word families for deeper understanding. 👛 Vocabulary Wallet: One-click save to a searchable, sortable wallet, organized by mastery level. 🧠 Spaced Repetition (SM-2): Optimize long-term retention with a scientifically proven review algorithm. 🔍 Encounter Tracking: Passive reinforcement by detecting your saved words on any webpage you browse. 📚 AI Stories: Generate context-rich short stories using your saved vocabulary for engaging learning. ⚡ X-Ray Mode: Instantly scan and highlight complex vocabulary on any page for quick review. 📊 Dashboard: Track progress, streaks, and manage your word cards with detailed analytics. 🤖 Telegram Bot Integration: Extend your learning beyond the browser. Look up words and review your vocabulary directly from Telegram. While Ghost Card is a universal tool for anybody looking to expand their linguistic horizons, it is particularly effective for: 🎓 Test Prep: Master high-level vocabulary for the GRE, SAT, TOEFL, and IELTS. 🌍 Language Learners: Perfect for ESL/EFL students seeking rapid English acquisition. ✍️ Professionals: Ideal for researchers, writers, and avid readers looking to sharpen their lexicon. 💸 Free & Flexible: Get 10 AI lookups free. For unlimited access, simply add your own Mistral API key. 🛡️ 100% Private: Your data stays yours. All information is stored locally in your browser; there is no data collection, sharing, or transmission.