This companion app enhances the Tempest Game Clock (sold separately at tempestclock.com). This high-definition, full-color game clock utilizes your Android phone as its display. Designed exclusively for Tempest Game Clock owners, a premium, weighted chess clock with a patented rocker controller (not touchscreen), this app provides precise analog and digital timing. Customize your game with increments, delays, sudden death, or overtime settings. Ideal for chess, backgammon, Go, Scrabble, Othello/Reversi, checkers/draughts, and other board games. Tempest boasts a Tournament Mode, disabling phone/text functions during rated games, adhering to FIDE and USCF regulations. See it in action and order yours at tempestclock.com.