Adobe acrobat reader is very good and supportive app for me because many of the pdf files and sheet which I upload or I recieved from others through mail and msg are such in format that they not open easily in mobile function .
Adobe acrobat app is very useful for reading such files where u can open your file via adobe acrobat and can save that file in adobe acrobat folder and can also be shared to others via adobe acrobat sharing option .i am using adobes many software and apps and it helps me to complete various tasks .
Thank you