Portosic OS X4

The Portosic OS X4 was released in 2012 by Theorysonic.

Features

 * Twovai, a typography- and geometry-focused design language.
 * Retained flat UI to make TS-UGOS FT-style as Portosic OS X3.
 * Touch ID recognition.
 * Slow-motion videos with recording and editing.
 * USB 3.0 support.