【新功能】 • 老師訂閱：出題不限、把任務出成 QR 發給學生、全 App 移除廣告 • 首次出題可免費試用 14 天，不需要信用卡 • 樂器分類：小提琴、中提琴、大提琴、鋼琴、長笛、直笛，譜號、音域與常用調自動帶好 • 認譜提示改成該樂器的位置圖：弦樂器顯示第一把位指板，點下去還會發聲 • 每種樂器都有自己的參考音音色 • 認譜與開口唱也能出題並產生 QR，學生掃描就把任務帶回家 • 節拍錄製改成打四小節投票，抓得更準，三連音也存得下來 【修正】 • 修正練習畫面在平板上會忽大忽小 • 修正底部功能列可能被系統列遮住 • 自訂任務不再預設最簡單的提示模式 [New] • Teacher subscription: unlimited assignments, share them as QR codes, and no ads • 14-day free trial on your first assignment — no credit card required • Instrument presets: violin, viola, cello, piano, flute and recorder, each with its own clef, range and common keys • Note-reading hints now show the instrument's own fingering chart; string instruments get a tappable first-position fingerboard • Each instrument has its own reference tone • Note-reading and singing assignments can now be shared as QR codes • Rhythm recording now takes four bars and votes, so triplets record correctly [Fixed] • Practice screen no longer resizes itself on tablets • Bottom navigation no longer hidden behind the system bar • Custom assignments no longer default to the easiest hint mode