title_body: Do non-Windows devices have equivalent of ClearType for ebook font rendering?
upvoted_answer: On devices that use eInk, there are no subpixels like the Red, Green and Blue subpixels that can be separately addressed on color screens. Hence there is no subpixel rendering as such on eInk devices (as stated by Sriram Peruvemba (chief Marketing Officer at  E-Ink Holdings).
  
  3rd generation iPAD has subpixel rendering according to the same article, but it is not supported by every application.