Looking for a free or low-cost PDF editor? You can edit PDF files, add annotations and much more -- all on your iPhone or iPad -- with our top picks.
Adobe Acrobat Reader (download for iOS) may be the go-to app for viewing, annotating, collaborating on, filling out, signing and storing PDF documents.
For free, PDF Expert 6 (download for iOS) lets you review, highlight, fill out, sign and password-protect PDFs on your iOS device. For a one-time payment of $9.99, the app allows you to make edits, such as changing PDF text and images and erase any sensitive data, using its amazing array of editing tools.
Goodnotes 4 (download for iOS) is part note-taker, part PDF annotator -- all for $7.99.
Take auto-sized-to-fit handwritten notes that are easy to read and easily searchable later or smoothly draw perfect shapes with the app's high-res digital ink, confident that they'll be synced on all your iOS devices. Then comment to your heart's content on PDFs or fill out and sign forms in the app.
As its name implies, GoodReader (download for iOS) is an excellent PDF reader app that lets you quickly read, mark up, edit and, in three taps, sign PDF documents -- big and small for $4.99. The text-to-speech feature that reads files out loud to you is a great bonus.
iAnnotate 4 (download for iOS) lets you peruse, mark up, sign and share PDFs and additional file types. As its name might suggest, iAnnotate specializes in annotation, allowing users to mark up documents in a variety of ways, with a pen, highlighter, note, photo, voice recording and a variety of drawing shapes. Then it allows you to compress them, so they can't be changed when shared and read by external PDF readers. You can also capture and convert web pages to PDFs for easy annotation and create brand new PDFs from scratch in the app.
The free Wondershare PDFelement (download for iOS) app helps you read, fill out, edit, mark up, convert, create and sign PDF files on your iOS device. You can even snap a photo of a document and convert it into a PDF to share with others.
Xodo PDF Pro (download for iOS) allows you to quickly read, annotate, comment on, fill out, sign and manage your PDFs -- all for free.