here is an amazing app that simulate oriental Qanon or ganon or ghanoon musical instrument

also you will have Persian oriental Quarter flat tunes that you never find in other apps
if you search all of the markets , you will never find any app like this .
don't believe it ? . OK try it

the app features:
- real sounds that are recorder from real instrument
- 13 minor/majour/quarter flat accords
- 10 selectable tunes
- pitch ability with moving your finger on each note
- transpose from -20 to +20 percents
- with the user manual inside of the app

try it .