Shadowing practice app for Japanese textbooks "シ ャ ド ウ イ ン グ 日本語 を 話 そ う" - Level 上級

You can use Shadowing 上級 to practice intermediate / advanced Japanese shadowing while on the move with your phone in hand, instead of having to hold books while listening to CDs, or sit in one place to practice Japanese shadowing on the computer.
The app can also automatically calculate how much time you've learned.