What are the best speed-reading apps for Android?

Librera is a free application for comfortable reading of all book formats: PDF, EPUB, EPUB3, MOBI, DJVU, FB2, FB2.ZIP, TXT, RTF, AZW, AZW3, HTML, XPS, CBZ, CBR, TIFF and OPDS Catalgos with free books Library ✔ search all books, all documents and create a library of them ✔ Select folders to search ✔ search books by title, author, series, genre ✔ Display by authors, genres, series Librera is a free application for comfortable reading of all book formats: PDF, EPUB, EPUB3, MOBI, DJVU, FB2, FB2.ZIP, TXT, RTF, AZW, AZW3, HTML, XPS, CBZ, CBR, TIFF and OPDS Catalgos with free books The program is small (14MB), thoughtful and easy to customize to your preferences. Our reader will replace all other book readers, because we added thousands of user's wishes and continue to improve it. Now you do not need to search for a reader for books, documents, music, comics. ★ Librera - 10+ million users ★ Librera protects your eyesight and will remind you to take a break if you like to read for a long time. Interface ✔ modern design ✔ Change the theme color ✔ Night or daytime themes ✔ Display books as a list or grid ✔ Change the size of book covers ✔ Search in the library ✔ List of favorites books ✔ List of recent books ✔ Notes and bookmarks to all books Unique mode for musicians ● Automatically scrolls notes at any speed ● fast transition between previous and next fragments of sheet music sheet ● return to the first page ● notes and drawing ● bookmarks to the required pages