Thread by @S_Ordibehesht

@JafarNajafov I just tested Stirling PDF (), and it is not as you indicate: it is a cloud suite, which implies that it is a (free) plain PDF reader unless one signs in to its website. When trying to sign in with Google, one is informed that by doing so
1/3stirling.com/app/signup

@JafarNajafov Stirling PDF will be given access to one's personal information. In other words, all the advertised functionality (including even changing the background colour) becomes available only after signing in to its cloud service. In this respect, as a stand-alone PDF
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@JafarNajafov reader, it is inferior to the free Sumatra PDF ().
3/3sumatrapdfreader.org/free-pdf-reader

@JafarNajafov PS) Stirling PDF advertises itself as "A privacy-first cloud suite", while "privacy" and "cloud" are clearly two antithetical notions. There is no such thing as a free lunch.

@JafarNajafov PPS) One more point: Adobe Acrobat Pro (which is not free, as you indicate) requires signing in to one's Adobe account for license verification; however, it allows users to work offline, with all tools - except the AI tool/assistant - remaining fully functional. Adobe also
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@JafarNajafov allows users to use the same personal license on different computers, so long as Adobe determines that they belong to the same person.
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