Very useful and extremely feature-rich!

After checking out the free version, I purchased the bundle that includes their frontend countdown timer.

Perfect for setting global special deals for holidays, and having this on set-and-forget for years to come.

Also terrific for per-product specials, like on certain days of the week, on certain times, a happy hour, etc.

Extremely easy to use and very feature rich.

Their product badges Pro plugin for products is also useful to showcase the discount savings in %, while typical WC product meta displays regular and discounted in Dollar amount.