Chapters 61~70 are level 7; chapters 71~80 are level 8.
Level is based on how much EXP (experience points) you've earned. Your level is currently "Lv 6".
To level up to level 7 you need to reach 170000 EXP. Your current EXP is "131519 / 170000".
Level 7 chapters unlock once you reach level 7. The fastest way to earn EXP is by using the "Practice" feature, where you can try to lots of correct answers in a row to build up a combo chain and score bonus EXP. If you've only been doing the vocabulary chapters, you might want to click the Practice "settings" button and disable "kanji" in the "question type" options. ^^
November 26, 2017 at 3:34am