What is Reddit's opinion of Universal Book Reader?

From 3.5 billion Reddit comments

Yes! I like this epub reader:

https://play.google.com/store/apps/details?id=com.mobisystems.ubreader_west&hl=en

I like epub better than pdf because the reader will scale things to fit your screen and you can choose a light or dark mode. I cant stand zooming and scrolling through pdfs and being forced to waste battery with a bright white background.

Whoa, Readium always works... You definitely can't convert them either. These two apps/extensions are the ones suggested by The Black Library: 1) Mantano 2) UBReader Do either of those work?

If you have Android phone than you can use other apps as well like

UB Reader

UB Reader. Supports other types of ebooks as well.

I use Universal Book Reader, and it allows you to increase the text size and it reflows the text.

UB Reader, found it awesome for reading e-books.