Mobile first
The clock is designed to work cleanly on a phone between two players.
Free tool
Silicon Clock
A digital chess clock for training games, physical-board sessions and quick practice. Choose a rhythm, start the game and keep both players focused on the board.
What it is for
A simple clock for real games.
Physical-board friendly
Use it beside a real board without opening a full tournament platform.
Known rhythms
Train with familiar controls such as 1+0, 3+2, 5+3 and 15+10.