Blitz: Fischer Chess Clock

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 the screen switches to the next player • Horizontal and vertical dragging set the time and increment • 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 • Free software with reproducible builds • Meets Android 15 security requirements • Enables memory tagging on compatible devices