Perfect piano

1. The lag sometimes show. The keys does not response. It seem like the ads causes it. Each time the ads refreshes, the key lags. Perfect piano is not so perfect after all. 

2. I have to create an android version soon. 

- simple key to sound with no lag

- no ask usb permission

- choose instrument

- choose soundfont 

- does not turn off when usb is inserted

- with least ads during play

Perfect piano is only 1 app. Ads income is capped. It focus on a few area

1. Keyboard play virtual and device

2. Learn contest with pre load songs. Step level to unlock. Score. 

3. Network play music