Perfect PDF Editor

Perfect PDF Editor is a power and user-friendly application for viewing, editing and creating PDF files across platforms and devices. The application can edit page content and create new pages, process links, bookmarks and outline structure in your PDF files. The multiview (multiple files in own windows) and different UI themes (including contrast themes and night-reading mode) are available!

Please have a look at the features of Perfect PDF Professional: this app offers much more functionality, but does not include features to edit static content on the pages. Possibly it fits your needs more closely. Besides, Perfect PDF Ultimate could be interesting: this app with the richest set of features.