Lexio: Vocab Builder & IELTS

📚 Learn English vocabulary the smart way with Lexio — the vocabulary builder for IELTS, TOEFL, GRE, and serious language learners.
Lexio helps you build and retain English vocabulary through word families — groups of related word forms that share the same root. Instead of memorizing "analyze," "analysis," and "analytical" as three separate cards, Lexio groups them into one smart card so you learn the full picture at once. It's a proven method for deeper, lasting retention — perfect for academic English and exam prep.
✍️ CREATE YOUR WORD FAMILIES
Build personalized vocabulary sets with terms, definitions, examples, collocations, and word types. Add multiple parts of speech for each root word and see all related forms in one grouped card — the smarter way to grow your English vocabulary for IELTS, TOEFL, and GRE.
🧠 THREE POWERFUL STUDY MODES
🔀 Flashcards
Flip through your word families at your own pace. Swipe to navigate and review terms with smooth, intuitive gestures. Tap to reveal definitions, examples, and related word forms progressively.
📈 Learn (Adaptive)
Go beyond simple memorization. Lexio generates varied question types from your word family data — multiple choice, fill in the blank, word type matching, example matching, and typing exercises. Adaptive rounds test not just the term, but its collocations and related forms too.
⏱️ Test
Challenge yourself with customizable tests. Choose from six question types: multiple choice, true/false, written, fill in the blank, word type, and example matching. Set a timer for exam-style pressure, then review your results with detailed explanations — great practice for IELTS and TOEFL.
🎯 STAY MOTIVATED
Track your daily study streaks and weekly activity. Watch your streak grow as you build a consistent vocabulary learning habit. Celebrate milestones with fun animations and haptic feedback.
🌑 DESIGNED FOR FOCUS
A clean, modern interface in both dark and light mode. Smooth animations, gesture-based navigation, and intuitive design make studying English words feel effortless.
✨ KEY FEATURES

Word family cards: group related forms, collocations, and examples in one place
Three study modes: Flashcards, Learn, and Test
Six question types that adapt to your word family data
Customizable vocabulary tests with optional timer
Daily streak tracking and weekly activity view
Search and manage your word sets easily
Clean, premium UI with smooth animations
Works completely offline — your data stays on your device

💎 FREE & PRO PLANS
Get started for free — create up to 5 sets per day and study with Lexio's core features. Upgrade to Pro ($2.99) for unlimited sets, unlimited study sessions, no ads, and custom UI themes.
Whether you're a student preparing for IELTS, TOEFL, GRE, or SAT, an English language learner expanding your vocabulary, or anyone who wants to learn new words effectively — Lexio makes vocabulary learning simple, engaging, and powerful.
Download Lexio and start building your English vocabulary today.