Hmm, I also use it on a 3rd gen iPad and found it fairly responsive. I didn't buy all the tools immediately, though. I tested them and bought a few as-needed.

Hmm, I also use it on a 3rd gen iPad and found it fairly responsive. I didn't buy all the tools immediately, though. I tested them and bought a few as-needed. I don't have the writing one (can't see a use for it). Perhaps it just doesn't suit your workflow. I still find the app remarkable in how much it makes me grab my iPad to sketch my thoughts. There's a distinct lack of friction to using Paper that allows it to take over for real paper.