Chess clock
A chess timer on your phone
Lay your phone flat between the two players. Each half of the screen belongs to one player and is turned to face them. Tap your half when you finish your move: your clock stops and your opponent’s starts. The running side is bright, the waiting side is dim, and the numbers are big enough to read from your chair.
Black taps first to start White’s clock, just like on a real clock. Pause at any time with the button in the middle.
Time controls
Pick a preset or set your own time. The first number is minutes per player, the second is seconds added per move.
Bullet – 1+0, 2+1. Blitz – 3+0, 3+2, 5+0, 5+3. Rapid – 10+0, 10+5, 15+10. Classical – 30+0, 90+30. Different time for each player for handicap games.
Increment and delay
Fischer increment adds a fixed number of seconds after each move. Bronstein adds back the time you used, up to the limit. Simple delay waits a few seconds before your clock starts to run. Move counts are shown for each player, and the last ten seconds show tenths.
Questions
How do I use the chess clock?
Choose a time control and place the phone between the players. Black taps their side to start White’s clock. After each move, the player taps their own side.
What does 3+2 mean?
Each player has 3 minutes for the whole game and gets 2 extra seconds after every move.
What is the difference between increment and delay?
Increment adds time after each move, so your clock can grow. Delay gives a few free seconds at the start of each move but never adds to your total.
Can I give one player more time?
Yes. In custom settings set a different starting time for each side.