[rfog]

I've tried a lot of PDF viewers/annotators for Android, but they all have the same problems: no real and working dark and/or inverted mode. There are some that allow you to invert the colors of the PDF, but the outside of the viewer is white or fairly bright grays (like XODO), and others simply don't have the option to invert the text (and/or images). What I mean is white letters and a black background when the default PDF has a white background and black letters.

Among the most common I have tried:
- XODO (you have to pay to have a really dark background), sometimes it doesn't save the changes in the clouds
- ezPDF (does not read from clouds)
- MoonReader+ (does not support standard PDF annotation)
- KOReader (does not support standard PDF annotation)
- The one that comes integrated with Samsung tablets and MS Office, as well as OneDrive and Google...

(I don't mind paying for an app, but not a subscription just so I can choose a more comfortable theme for my eyes.)

Does anyone know of a decent viewer? Thank you