From hello to fluent — in just 30 days.

Speak from day one. Stop memorizing words and start having real conversations. Kasa uses AI-powered roleplay to help you talk, listen, and think in your new language fast.

Certificate of Fluency Daily Recall & Spaced Repetition Unlimited AI Conversations

11languages

10k+challenge completions

4.9/5avg. lesson rating

Why Kasa works

Real conversation > rote memorization. Immediate feedback that sticks. Immersive AI that adapts to you.

Have real conversations

Practice any scenario—café, airport, interview—with adaptive AI chat that answers like a native speaker.

Learn smarter, not longer

Daily recall and spaced repetition lock new phrases into memory while lessons target the most useful grammar.

Instant feedback

After every exchange, see what you nailed and what to polish with real-time pronunciation & grammar tips.

11 languages, one experience

Spanish, French, Japanese, Korean, Italian, German, Filipino, Portuguese, Russian, Dutch, and more on the way.

30-Day Fluency Challenge

Guided daily lessons + unlimited AI roleplay. Earn your Certificate of Fluency when you finish.

Progress that motivates

XP, streaks, achievements, and fluency checks keep you moving from beginner to conversational—fast.

How it works

Three steps to speaking naturally—not endlessly studying.

Pick a scenario

Choose a context (e.g., café, meeting, travel). Kasa sets the scene and guides you with native-like dialogue.

Speak freely

Talk and listen naturally. AI responds instantly and adapts to your level—no scripts, just conversation.

Get instant feedback

See pronunciation and grammar tips in real time. Daily recall + spaced repetition make it stick.

What learners are saying

Real people. Real conversations. Real progress.

“I booked a trip and held my first Spanish small talk within a week. The AI roleplay feels like chatting with a real person.”

— Alex P.

“Daily recall + quick feedback = sticky learning. I actually look forward to practice.”

— Jamie L.

“Kasa got me speaking naturally, not just tapping flashcards. The 30-day challenge kept me consistent.”

— Morgan S.