Power Reader: Great For Powering Through Books от Attila Houtkooper

UPDATE: The latest version has additional settings for EPUB files that increase the font size and override the font type.

Features include:
* Speed Reading: For fast reading hit the ▶ button;
* Supported formats: both EPUB and PDF files;
* Override font-family and text size;
* Overview: Persistent table-of-contents highlighting the current chapter;
* Relaxing evenings: Supports automatically switching to dark mode;

An overall great way to read books at your leisure or power through those interesting reads.