The truth is that this ePub document reader is not one of the most complete nor the most powerful in relation to available options, but nevertheless its simplicity when managing the library and the friendly and minimalist interface makes it a very valid option to take a look from time to time at an epub, without worrying about anything else to read.
If we compare this reader with Kindle, the Kindle turns out to be more complete by offering cloud sync with your devices or your amazon purchases, however you cannot add the ePub you want directly, which is a disadvantage because it is so focused only on the amazon ecosystem.
If we do it with another application from the App Store, BookReader, the latter turns out to be also much more complete, read more formats apart from ePub And both in its handling and in reading and saving options it is better, but its downside is that it costs € 8,99 while Kitabu is free, so it already depends on your needs.
Simple but not too functional
The options of this reader go through being able to change the font size, the background color, management of the table of contents, copy and move documents from the finder to the library in addition to support multimedia files embedded in the files.
However on the other hand no search available, nor bookmarks, apart from not being able to see more than one document at a time and most importantly, it is limited to ePubs exclusively.
I think that if our needs do not cover more than reading books without too many pretensions or documents in ePub format, this may be a great candidate more than anything for its biggest claim, being free.
More information - Scida, an interesting app for owners of a Kindle
Source - mac.appstorm