Most complete FB2 format support: styles, tables, footnotes
Additional fonts support (.ttf)
Can read books from zip archives
Automatic reformatting of .txt files (autodetect headings etc.)
Styles can be customised in wide range using external CSS
Android specific
Page flipping animation.
Built-in file browser, quick recent books access Day and night profiles (two sets of colors, background, backlight levels) Brightness adjustments by flick on left edge of
screen
Background texture (stretched or tiled) or solid color
Paperbook-like page turning animation or "sliding page" animation
Dictionary support (ColorDict, Fora Dictionary, Aard dictionary)
Customizable tap zone and key actions
Place additional textures to /sdcard/.cr3/textures/ -- to be used as tiled page backgrounds
Place additional textures to /sdcard/.cr3/backgrounds/ -- to be used as stretched page backgrounds (/cr3/ directory can also be used instead of /.cr3/, and internal SD or internal storage instead of /sdcard/)
TTS (text-to-speech) support Select text using double tap (optional)