Chess Timer is a free iPhone app developed by DAVID CROOKS SOFTWARE DEVELOPMENT LIMITED. It is a simple dual timer designed for over-the-board chess and other two-player games. With Chess Timer, you can place your phone flat on the table next to the chess board and easily keep track of time during your game.

The app features a single clock that runs at a time. By tapping the clock face, you can stop one clock and start the other player's clock, ensuring fair and accurate timing during the game. This makes Chess Timer not only suitable for chess, but also for other competitive two-player board games like Scrabble, shogi, or go.

Chess Timer also offers pro features for enhanced gameplay. You can add extra time every turn using one of three methods: Fischer, Bronstein, or a simple delay. With the Fischer method, time is added to the clock at the end of each turn. The Bronstein method adds time at the end of each turn, but never more than the turn time. Finally, the simple delay method includes a delay before the clock starts each turn.

Additionally, Chess Timer allows you to set an overtime limit for each player. Penalty points are given for the amount of overtime used, making it suitable for games like Scrabble where time management is crucial.

Overall, Chess Timer is a straightforward and efficient app for managing time during over-the-board chess and other two-player games. Its intuitive interface and pro features make it a valuable tool for players who want to focus on their game without worrying about timekeeping.