Master Learning
Through Smart Practice
Create custom word sets, play engaging games, and accelerate your language learning journey with AI-powered tools.
New in Calleo
Listen. Write. Two new ways to practice.
Beyond flashcards, quizzes, and matching, Calleo now tests you the way real conversations do. Listening mode plays the word aloud and you identify it, training your ear, not just your eyes. Writing mode flips it around: you see the translation and type the word from memory, building real recall instead of multiple-choice guessing.
Build a set in seconds, not minutes
Typing out word lists is the boring part, so skip it. With Quick Generate, just type a topic like "restaurant" or "travel" and AI builds a ready-to-use vocabulary set instantly. Already have a set going? Generate more related words with one tap, and Calleo automatically skips anything you already have. Prefer your own list? Import directly from Wordwall and start practicing right away.
Learn: a guided path from your first words to fluency
Not sure what to study next? Learn is a structured curriculum spanning all six CEFR levels, A1 through C2, starting with greetings and numbers and building up to work, travel, and abstract topics. Each step is a focused set generated just for you. Pass the quiz and your next set unlocks automatically, no pressure, no penalty for retrying.
Everything you need to master a language
From smart AI generation to engaging game modes, Calleo is packed with tools to help you learn faster.
Learn Your Way
Choose from 6 interactive learning modes that match your unique learning style.
AI-Powered
Generate word pairs instantly and get smart hints.
40+ Languages
Full interface localization and native language support.
๐ต๐น ๐จ๐ณ ๐ฏ๐ต ๐ฐ๐ท
๐ธ๐ฆ ๐น๐ท ๐ณ๐ฑ ๐ต๐ฑ ๐ธ๐ช
๐บ๐ฆ ๐ฎ๐ณ ๐ป๐ณ ๐น๐ญ ๐ฎ๐ฉ
Native iOS
Get and app to learn on the go.
Share & Discover
Create shareable links to your word sets or copy community sets to your collection. Track views and engagement.
Seamless Sync
Start on iPhone, continue on Web. Progress follows you.
Why Calleo?
We built Calleo to remove the friction from language learning. Whether you are a casual learner or a polyglot, our platform adapts to you.
Start in Seconds
Try guest mode instantly. No signup required until you want to sync.
Truly Multilingual
Interface available in multiple languages. Learn in your comfort zone.
Privacy-First
Your data is securely stored via Supabase. You are always in control.
Modern & Fast
Built with modern technology for smooth performance on every platform.
Experience the App
Take a closer look at our interactive learning modes.
AI Word Generation
Added Words
Learning Modes
My Sets
Dashboard
Create a Set
Quiz Mode
Word Tinder
How It Works
Start your learning journey in four simple steps
1. Create Sets
Build vocabulary lists or use AI to generate words for any topic instantly.
2. Choose Game
Pick from 6 engaging game modes that make learning feel like play.
3. Track Progress
Monitor your streak, mastery levels, and history on your dashboard.
4. Share & Learn
Share your best sets with friends or discover community content.
Loved by Learners
"The AI word generation saved me hours creating vocabulary lists for my Spanish class. It's incredibly accurate."
Sarah J.
Language Student
"Finally, a language app that works the same on my phone and computer! The sync is flawless."
Michael C.
Digital Nomad
"The match game makes studying feel like fun. My kids love it too! It's become a daily family activity."
Elena R.
Parent & Teacher
Simple, Transparent Pricing
Education should be accessible to everyone.
Free
Everything you need to master a language.
Unlimited word sets
Access all 6 game modes
AI word generation
Share your sets
Cross-platform sync
Frequently Asked Questions
Start Learning Today
Join thousands of learners mastering new languages with Calleo. Download now or try it in your browser.
No credit card required for free tier.