Advanced learners use PDFs on tablets to practice "shadowing" (repeating audio immediately after hearing it). Having the digital text allows them to annotate directly on the screen for intonation and pauses without ruining a physical book.
: The curriculum is specifically tiered to prepare students for proficiency exams like the Japanese Language Proficiency Test (JLPT) and the NAT-TEST . Series Overview by Level Program Period Elementary (N5-N4) ~200 hours per part