This is horrible app, it doesn't work properly at all and it is sloooow as hell. And design and functionality would be better done by 8 year old. It looks so cheap and bad. I would not recommend.
This countdown timer is pretty useful except for you are forced to have the timer on all products or only one selected collection. You can't choose individual products that you really having a sale or if you are marketing individual products that require urgency. The time you choose (aka 4 hours) will be shown on all products. You can't individually have any other different times. Time goes down even if nobody is viewing the product pages either.