One of the key dislikes is something you won't find among Apple users: the feeling (not always accurate, but genuine) that PDF requires Acrobat Reader to open and the much more expensive Acrobat Pro to do anything more than open.
Heaven and Earth designs, Paine Free Crafts, Charting Creations, Artecy, and many others Also many smaller designers that use Pattern Keeper compatible charting software works. But there's some caveats on that statement, as you'll see. Pattern Keeper works with, not all, but many chart designers. As you can see, GoodReader for iPad is in my top iPad app list and made its way to my list of best productivity apps for iPad. There is another App with lower price App Store - Save to Cloud. and share iCloud link for your friends to download. But GoodReader 4 will be getting the future updates from here on out. I can't offer a citation, but I work with a lot of individual and corporate computer clients so I think I can speak with larger-than-just-anecdotal/personal experience when I say that yes, PDF is disliked by a significant number of users. Since you could only get to the files you store in iCloud through the GoodReader app, it seemed like a bit risky to keep them there. The other reason is just for future-proofing: the current apps work now, and feature an identical interface, and are still available on the App Store. Was a boon when it came out, replacing more difficult postscript files. GoodReader PDF Editor & Viewer currently costs $2.99 for the base app, but that is as part of a current 50% discount offer. Version 3.7.0 includes some minor enhancements provided to make a better user experience.
Upgrading to the Pro Pack adds in split-screen for reading two documents side-by-side on an iPad, AES-256 encryption, and file synching, among other extras. Two weeks after receiving a significant update, GoodReader for iPad has been updated yet again. Unusually, the base app is one that requires purchasing instead of being free, though there is also an additional subscription element as well. It can even connect to cloud storage services, as well as data stores such as WebDAV, SMB, AFP, FTP, and SFTP. Forthcoming updates to Pages, Numbers and Keynote, its iOS and OS X office apps. The app is able to handle file management as well, collecting together files in one place, including those it cannot open itself. Apple is one of a growing number of companies looking to take advantage of the great spread of wireless access. Annotation tools include highlighting text and adding notes, as well as drawings, which can then be shared with others for collaboration purposes. You have reading tools like PDF Reflow, which can make the text of a document easier to read on smaller screens without needing to constantly scroll sideways. GoodReader has existed for over a decade, and is one of the best PDF-reading apps available today.