Interval timer 30 seconds rounds /15 seconds rests [30 minutes]

Interval timer with beeps every 30 seconds rounds and 15 seconds rests, for thirty minutes.
For workouts with rests.
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[@GC-wn3dw]

Thank you

[@vbgwerdplay7476]

What is generally meant by 30seconds ON and 15 seconds OFF, and is the off the same as a rest? What is a round?

[@MrMonkey987]

30 seconds of work, 15 seconds break, a round is both of those combined. I guess