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Blitz: Fischer Chess Clock

A minimalist Fischer chess clock for Android.
New in version 2.0.1
• Fix bug where clock would reset if time ended during back gesture
A chess clock made for blitz
  • Defaults to 5+3 Fischer timing: 5 minutes + 3 seconds per move
  • FIDE-compliant: initial time for 5+3 is 5:03, not 5:00
  • Privacy-friendly: no ads, no permissions
Fast and intuitive controls
  • Touching anywhere on the screen switches to the next player
  • Time and increment are set by horizontal and vertical dragging
  • Haptic feedback is enabled by setting the ringtone to vibrate
  • Back gestures pause and reset the clock
Robust time implementation
  • Uses the most precise time source available on the device
  • Clock implementation tested with 100% code coverage
Free and secure
  • Open source with reproducible builds
  • Enables memory tagging on compatible devices
  • Meets Android 15 security requirements
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Versions

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