A clock that gets out of the way
Open straight into the clock. Choose players and a time control, then start the game with a tap.
Chess / Timekeeping
CLK-01
A chess clock with a little more history.
CLK-01 is made for over-the-board chess: set the time, choose the players, and put one phone between the two sides. It keeps the clock simple while giving your games somewhere to go afterward.
About CLK-01
Made for the way you use it.
CLK-01 brings a dedicated chess clock together with player profiles and the records that grow around regular games. It is designed for casual play at home, with friends, or among a small group.
Players and rivalries
Create player profiles, track records overall or by color, and see head-to-head results between rivals.
More than one game
Keep a full game history, award a House Champion title, and organize casual tournaments.
Inside the app
Thoughtful details. Practical tools.
Time controls
- Built-in time controls from 5 minutes to 1.5 hours.
- Increment presets including 3|2, 5|3, 10|5, 15|10, and 90|30.
- Create custom controls, including uneven starting times for handicaps.
Records and events
- Player cards with photos or chess-piece placeholders.
- House Champion title changes hands when the current champion is beaten.
- Swiss, single-elimination, and round-robin tournament formats.
- Tournament Champion title; players can display up to three titles.
CLK-01 is intended for casual, over-the-board play. It is not a certified clock for rated or official competition and is not affiliated with FIDE, US Chess, Chess.com, or Lichess.
A Lohm Lab product
Simple by intention.
Free to use, with no ads and no accounts. The app works offline; player data and game records stay on your device. Vibration is the only permission.