TL;DR: PDF Expert edits, signs, and converts PDFs on your Mac, and it’s only $79.99 for life (reg. $139.99).
Macs have a few basic tools to open PDFs, but you can’t do much more than look at them. If you want to fix typos or make bigger edits, you’ll need an app like PDF Expert. Right now, a lifetime subscription only costs $79.99 (reg. $139.99).
PDF Expert lets you edit PDFs as easily as any other file format. You can update a number, fix a sentence, or add a full paragraph without rebuilding the document. It can do the same thing with images, too. Messy files get cleaned up with tools to merge PDFs, reorganize pages, and compress a file that’s too big to email.
PDF Expert turns documents and images into PDFs and converts PDFs back into Word, Excel, PowerPoint, image, or plain text files you can keep editing in another app. The built-in OCR tool reads the text in a scanned PDF, so you can search and select the words on a receipt that used to be a flat picture. You can also search scanned contracts and old paper records for a name or a date. You can fill out and sign forms right on the page, and annotation tools let you highlight and mark up a draft before you send it back.
Edit your PDFs yourself.
Get a PDF Expert Premium lifetime subscription for Mac on sale for $79.99.

PDF Expert Premium Plan: Lifetime Subscription (Mac)See Deal
StackSocial prices subject to change.