Stemmy Vocabulary Wallet
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Overview
Stemmy is a free AI 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.
🔮 Ghost Card — Floating overlay with definition, pronunciation, synonyms, antonyms, and etymology. Works on every website. (Ctrl+E)
🧬 Word DNA — Root morpheme, origin language, and related words from the same word family.
💎 Vocabulary Wallet — One-click save. Searchable, sortable, organized by mastery level.
🧠 Spaced Repetition — SM-2 algorithm schedules reviews at optimal intervals for long-term retention.
📍 Encounter Tracking — Detects your saved words on any webpage you browse for passive reinforcement.
📖 AI Stories — Generates short stories using your saved vocabulary for context-rich learning.
🔬 X-Ray Mode — Scans any page and highlights complex vocabulary. Hover to review instantly.
📊 Dashboard — Streaks, activity timeline, detailed word cards, data export/import.
🔑 Free — 10 AI lookups included. Add your own Mistral API key for unlimited usage.
🔒 Private — All data stored locally in your browser. Nothing collected or shared.
🎯 Built for GRE, SAT, TOEFL, IELTS prep · ESL/EFL learners · researchers · writers · avid readers
Install Stemmy — free, private, works on every website.
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