Tempest

This companion app enhances the Tempest Game Clock (sold separately at tempestclock.com). This high-definition, full-color Android app transforms your phone into the display for a unique, tournament-style, weighted game clock. Designed exclusively for Tempest Game Clock owners, this app provides precise analog and digital timing with customizable options including increments, delays, sudden death, and overtime controls. Ideal for chess, backgammon, Go, Scrabble, Othello/Reversi, checkers/draughts, and other board games. The Tempest's Tournament Mode disables all phone and text functions during rated games, adhering to FIDE and USCF regulations. View the clock in action and order yours at tempestclock.com.