NEED RECOMMENDATION ON MUSIC READER APP FOR IOS DEVICES e.g. I-PAD

I, and almost everyone I know and jam with who uses song sheets, use LinkeSOFT Songbook on Android, iOS or PC. It works with page-turner pedals, has the option to auto-zoom songs to one page, transposes keys on the fly, scrolls if required, displays chord diagrams for many instruments if required and loads more. Personally I find PDF's much less flexible and versatile.

Thank you for the help and recommendations. I purchased ForScore for Ipad. Now I am trying to get the page to flap automatically. I entered Mike Lynch's tabs as they are written in huge font size so some songs are 5 pages long. Unfortunately , he did not include any of the beats on his sheet music and these are pdf so I don't know if it will make any different. I will read some more on the ForScore instruction. You would think this is the basic feature , it should be easy.