Would a countdown timer consume too many Bubble working units?

Questions
1

I want to implement a count down timer on my bubble web app. To do so, I have to create a custom state of type date and then I run a workflow every 1 second that subtracts 1 second from the custom state’s date,.

I’m a little concerned this would use too many working units bc there’s a workflow running every 1 second. Am I right about this?

2

That can all be done client side. Except for getting the date you’re counting down or up to, there’s no WU consumption for such a thing.