Lemma. Grow Your Words.
Lemma is a free AI vocabulary coach for intermediate and advanced English learners. Paste any text, or upload a photo, and Lemma pulls out the words worth learning, explains them, and helps you actually remember them.
How it works
- Capture. Paste any text or upload a photo. Lemma extracts unfamiliar words, phrases, and idioms, converts them to dictionary form, and lets you pick which ones to save.
- Learn. Every saved word gets an AI-generated dictionary entry: pronunciation, definitions by part of speech, example sentences, collocations, synonyms and antonyms, common mistakes, and a usage note.
- Practice. Five gamified exercises (Word Quiz, Fill in the Blank, Spot the Mistake, a Comprehension passage, and an AI-narrated Podcast) are generated from your own saved words. Correct answers earn XP, build a daily streak, and unlock badges.
- Ask. A personal AI English tutor chat that already knows your saved words, for grammar questions, sentence checks, or conversation practice.
Frequently asked questions
What is Lemma?
Lemma helps English learners grow their vocabulary: capture new words from any text or photo, understand them with AI-generated definitions and example sentences, and retain them through gamified quizzes and an AI tutor.
How does Lemma find new words to learn?
Paste any text or upload a photo of a page, and Lemma extracts unfamiliar words, phrases, and idioms, converts them to dictionary form, and generates a definition, part of speech, example sentences, collocations, synonyms, and antonyms for each one.
How does Lemma help you remember new words?
Lemma generates gamified quizzes (earning XP, leveling up, keeping a daily streak, and unlocking badges) from your own word list, and offers a personal AI English tutor to practice using the words in conversation.
Is Lemma free to use?
Yes, Lemma is free to use, with no account or sign-up required.
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