
How Cardio works
Learning Korean has never been this fun and effective!
Smart Flashcards
Swipe through beautiful cards with native audio. Each word sticks in your memory naturally.
Spaced Repetition
Our algorithm shows words right before you forget them. Science-backed learning!
Daily Goals
Set your pace. Just 5 minutes a day builds lasting fluency. Stay motivated with streaks!
Learn what matters
Our vocabulary is carefully selected to get you speaking Korean fast. From everyday phrases to cultural expressions.


Build a learning habit
Daily goals, streak tracking, and friendly reminders keep you coming back. Learning becomes a habit, not a chore!
- Set daily goals that fit your schedule
- Earn XP and level up as you learn
- Get streak reminders to stay on track
- Celebrate milestones with achievements
Sound like a native speaker
Every word is recorded by native Korean speakers. Train your ear and perfect your pronunciation.
Unlock unlimited learning
Go further with Cardio+ premium features for just $3.99/month
- Unlimited flashcard reviews
- Extended vocabulary library
- Advanced learning analytics
- Offline mode
- No ads ever

Learn anywhere, anytime
Available on iPhone, iPad, and Mac. Your progress syncs across all devices.


Start learning Korean today!
It's free, fun, and proven to work. Download now!
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