Functional:
1) Read mode and control mode (single tap to switch)
2) Fixate pages by width, page will not move from rigth to left
3) Search text in book
4) Table of content
5) Night Mode
6) Search all books (PDF, DjVu) on device
7) Scroll pages by finger tap on screen
Full screen mode
9) Support e-reader keys like Nook, Kindle, Sony
10) File navigation
11) Recent Books
12) Light theme and black theme
13) Set screen orientation: Portrait, Landscape, Automatic
14) Bookmarks on page
15) Links History, back to page
16) Cut white document borders
17) Automatic Scroll, configure speed, play-stop on double tap (Best choose for Musicians)
18) Customize background and font colors
19) Support Intel Atom x86 CPU
20) Book and Page Thumbnails
21) Desktop widget for recent books
22) Send, Share documents and bookmarks
23) Import, Export Settings
24) Configurable search directories
25) Samsung multi-window mode support
26) Mode for musicians (Autoscrolling music notation, scores, speed change, stop, start)
27) Text selection
28) Copy, Share, Translate, find in dictionary selected text
29) Translate text in online dictionaries (Google Translate, Lingvo, Dictionary.com, Oxford, Longman, Cambridge, Macmillan, Collins, Merriam-Webster, 1tudien, Vdict)
30) Share page as Image (send it via Gmail, Viber, Skype, etc.)
31) Support custom style color and icons color
PRO Functional:
1) No Ads, No Internet permission
2) Filter Search result
3) Sort search result by Name, Path, Size (Ascending, Descending)
Android