btsk.app is an AI-powered Korean language learning platform that helps learners worldwide study Korean in a structured, personalized way. We offer integrated digital services including an AI tutor, step-by-step curriculum, language exchange matching, and shopping assistant, with secure payments (Paddle) for subscriptions and one-time purchases.
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Company Name: 비티에스케이(BTSK)
Registration No.: 315-13-68386
Mail-order sales report No.: 제 2026-서울광진-0480 호
Representative: 정종환
Address: 서울 광진구 자양로3길55 경남아너스빌 1404