Turn YouTube videos, PDFs, and articles into personalized language lessons. Kelona's AI builds smart flashcards and stories so you remember every word.
Features
Kelona combines AI, spaced repetition, and real-world content into one powerful learning platform.
Paste any YouTube video and Kelona extracts the transcript, highlights key vocabulary, and turns it into an interactive lesson.
Upload any PDF or paste text, and our AI automatically extracts vocabulary relevant to your learning level.
Every word gets a mnemonic story, example sentences, and contextual meaning, all generated by AI to help you remember.
Our SM-2 algorithm schedules reviews at the perfect time so words move from short-term to long-term memory.
Read AI-generated stories that blend your native and target language, reinforcing vocabulary through immersive context.
See daily goals, streaks, words mastered, and lessons completed on your personal dashboard.
How It Works
No complex setup. Just sign up, pick your language, and start learning from real content.
Select from over 150 languages. Set your native language and the one you want to learn. Pick your level from A1 to C2.
Paste a YouTube link, upload a PDF, or type in text. Kelona's AI extracts the vocabulary and builds a personalized lesson for you.
Kelona schedules smart reviews using spaced repetition. Flashcards, stories, and quizzes help you move words into long-term memory.
Join Kelona today and learn from the content you already love.
Start Learning NowOur Home
Kelona Technologies is based in Adlershof Science and Technology Park in Berlin, one of Europe's largest and most successful science, technology, and media hubs. Home to over 1,200 companies and 10 scientific institutes, Adlershof is where innovation meets research.
Rudower Chaussee 29, 12489 Berlin, Germany
Contact
Have questions, feedback, or want to partner with us? We'd love to hear from you.
hello@kelona.ai