Practice Proof - Practice Log
A music practice log for parents of music students. It counts only the minutes it hears an instrument or singing, on the phone, with no account.
"Did you practise?" "Yes!" Practice Proof settles it kindly.

Start a session and put the phone near the instrument. Practice Proof listens and counts only the minutes it actually hears an instrument or singing. Breaths, page turns and short rests count; a long break does not. At the end you see both numbers: the minutes heard, and the time spent.

Made for parents of music students:
- A daily goal per player, set to whatever the teacher asked for
- A timeline of every session: when the playing happened and when it went quiet
- The teacher's assignments (pieces, scales, études) with a weekly target
- This week drawn as notes on a staff: a filled note for every day the goal was met
- A streak, and stickers to earn along the way
- Several players on one phone
- A practice sheet for the teacher, as a PDF or a spreadsheet, with a line for a parent's signature

Nothing leaves the phone. The sound is checked on the phone as it happens and thrown away, and there is no account to make. One honest limit: music from a speaker sounds like practice too.