Instructional Guide
Choose the guide for the task you want to do. Each one explains the controls, gives worked examples, and answers practical questions—separate from the tools themselves.
Choose a clock or timer guide
World clock
Read local time with seconds, add city clocks, compare dates, and understand current UTC offsets and server alignment.
Read the clock guide →Tabata and intervals
Set rounds, work and recovery, add preparation, and calculate the total with or without a final rest.
Read the Tabata guide →Gym sets and rep tempo
Build an exercise routine, pace lift–hold–lower phases, plan set recovery, and understand time under tension.
Read the Gym guide →