Fatty dragon released for free on appstore finally, pls try it and give me a feedback 
ios https://itunes.apple.com/it/app/fatty-dragon/id821697877?mt=8
google play
https://play.google.com/store/apps/details?id=com.livio3d.FattyDragon
That fly sound is just annoying, and not in a fun way. Won’t comment on the flappy bandwagon of unimagination. It’s pretty though.
I like it - graphics are good. Not a bad flappy clone. You could also have added enemies that shoot things at the dragon for the player to avoid. It also seems like that one spot with the 2 spikes at the bottom and 1 at top is too difficult. That might frustrate someone like me, as I usually quit games like that after I can’t achieve it after trying 2 or 3 times.