Obstinate is a digital, music practice journal.
Heres what it can do now:
Music tutor sends music practice tasks to students.
Students practice those tasks; sound clips are created.
Once completed the sound clips are sent to the tutor.
Tutor reviews sound clips.
Students can also create their own tasks for the teacher to review.
This app is currently used privately by a music teacher and his students. If you wish to know more, please contact the developer.