Ranked in these QuestionsQuestion Ranking
Pro Efficient user interface
You get what you want by few interactions.
Pro Works great with diverse cloud services (e.g. Seafile) and saves changed documents on the fly in the cloud
Pro Very (very) good support
Feature Requests and bugs are nicely handled.
Can open more than one PDF at a time in tabs.
Pro PDF can be read from SD Card
Xodo does not copy the PDF files to the internal memory.
App can reflow any PDF for an enhanced reading on small terminals. The process is a bit slow but works for every PDF.
Pro No ads
The reader offers a lot of features for free with no ads.
Pro Great handling for S-Pen/Digitizer
Con Lag when reading
When switching pages, there can be some lag and a re-zoom of the page.