5 stars: There are so many options for optimizing your reading experience exactly the way you like it. I got it for the night mode, but it also includes a darkroom mode which is even easier on the eyes at night. This is free and completly free of ads?! There are good people in the world who just want to make the best app they can.
5 stars: I absolutely LOVE the feature of auto-crop on books, because I have a few that are nicely scanned, but with heavy margins for some reason. It would be cool to edit the PDF making the crops permanent, but that's not your market. I second the mention of
4 stars: Doesn't work well on the latest Android. There're viewport issues that others've already described, and then if you open a document via a file/cloud explorer, you often can't just close the document to reopen it, because that would just close the app altogether. There're also the
3 stars: The search function is badly broken after the latest update to version 2.7. Also the UI changes do more harm than good.
2 stars: After switching to another opened app and returning back, viewport becomes 2 times smaller or some artifacts are displayed, making reading quite difficult. I've used it for many years and it has been like a golden standard for reading docs to me, but now I'm removing, cause the bug has been for quite a long period of time and it doesn't look like it's gonna be fixed soon.
2 stars: I have been using this app since 2 years or more and had a nice experie...