Okular vs StarForce Reader

Okular has no write-up on Specifiction yet; its figures are above.

StarForce Reader is a free application for viewing PDF, EPUB, SFPDF and PCDOC files; on mobile devices it can also play protected videos. Its reading tools include tabs, searches for text and titles, and a saved last reading position, along with activation and deactivation controls for protected documents. Downloads are listed for Windows, Linux, RED OS, macOS, Android and iOS. On Windows, the first opening of a protected document activates it and ties it to that computer’s software and hardware setup. Whether printing is possible depends on the publisher’s settings, and moving an activation to another computer may be disabled. On Android, removing the app also removes the protected-document license, so another activation is needed after reinstalling to view that document. The maker describes installation as free of promoted third-party utilities. For support, StarForce provides a feedback form and recommends SF Helper to help diagnose problems with protected applications. Its maker, Protection Technology, LLC, says it has developed software solutions since 2000.