Compare two PDFs on iPhone and iPad

Compare helps you inspect two documents before accepting a revision.

Import both PDFs and give them distinguishable filenames.
Open Compare from the document workflow. Select the original as Document A and the revised document as Document B.
Run comparison and inspect each reported difference. Check the document labels before interpreting additions or removals.
Open the relevant original and revised passages to confirm the meaning. On iPad, use the available wider layout to inspect both sides.