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I have both goodreadsr and PDF expert. They both have there advantages but I almost always use PDF expert for my annotating needs. Im a molecular biology graduate student so I work with a lot of PDFs. PDF expert is just smoother in the annotating area.

Plus they are always improving and adding features. Best supported app I have seen thus far.

Iannotate might be great, but they do not update the app near as often....at least as far as I have seen
 
I'm in the same boat. Tried looking for a free PDF annotator. None out there.

Let me rephrase that: There are a few out there, and they are decent.

Problems: yep!

  • Majority are not optimized for the retina, thus some of the texts does look a bit unsharp
  • They are trials. IE. you can have maybe 2 -4 "notebooks", which include PDFs

But since you want free, here are the ones on my iPad:

pdf-notes (Free)
DocAS Lite (lite) (it isn't showing the entire name on my iPad)
GoodNotes (Free)

Remember these are free, and "trial versions", so they won't be what you expect. I think the best of these is GoodNotes, but i have a textbook on it, and the rendering isn't instant. It takes maybe a second at most (it renders them quadrant by quadrant, but at a pretty good speed). Good Notes (Free), gives you two free notebooks (or PDFs)
 
JUST AN UPDATE:

The adobe PDF reader app has just been updated and now has the function to highlight, annotate, put sticky notes and more. This is for anyone else who is interested.

This is for anyone who is looking for a free solution to the OP. If you're looking for a paid app, I suggest GoodReader, I bought the app before Adobe did the update and found it to be very solid.

Hope this helps if you just so happened to stumbled upon this page.
 
Easy Annotate

Supports PDF highlighting, annotation, drawing.
Excellent dropbox support. Connect your account and all your PDFs are visible.

I use it myself as it allows for editing and viewing two PDFs simultaneously. Great for my research / study projects.
 
Easy Annotate

Supports PDF highlighting, annotation, drawing.
Excellent dropbox support. Connect your account and all your PDFs are visible.

I use it myself as it allows for editing and viewing two PDFs simultaneously. Great for my research / study projects.


You forgot to mention you're pitching your own app. If an intentional omission that'd be shilling.

We had the same problem. There simply was no app that could annotate and show two pdfs at the same time. Our solution was to develop our own app :D (not the easiest path, but sometimes you gotta do what you gotta do ;))

It launched just recently, is called Easy Annotate, and can be downloaded on the app store.
It solved our problem, so if you need any help, please let me know!
 
Jumping in since this thread was bumped to say that the updated iAnnotate app for iOS7 is amazing. I have it as well as Goodreader and I used to prefer the latter, but that has changed with iAnnotate's iOS7 app. Really great to see an app develop from such humble beginnings.
 
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