This companion app enhances the Tempest Game Clock (sold separately at tempestclock.com). A premium, tournament-grade weighted game clock, it utilizes your Android phone as a vibrant, high-definition display. This app is exclusively for Tempest Game Clock owners: a high-quality, traditional chess clock featuring a patented precision rocker controller (not touchscreen). It provides clear analog and digital timing options, accommodating increments, delays, sudden death, and overtime settings. Ideal for chess, backgammon, Go, Scrabble, Othello/Reversi, checkers/draughts, and other board games. The Tempest boasts a dedicated TOURNAMENT MODE, disabling all phone/text functions during rated games, adhering to FIDE and USCF regulations. View the clock in action and order yours at tempestclock.com.