I am looking for an app that will apply a 10 minute discount of 15% when a new visitor comes to my store. I've seen loads of countdown timer apps that have a Sale Ends timer, or reserve your cart timer, but I want one that applies a discount to all purchases for the first 15 minutes someone is on the site and the timer shows on the collection page, product page, cart and checkout. It needs to be customisable so that I can make it look classy and in keeping with my store design.
I found an app called discount Ninja, but it seems very complicated to set up and it crashed as soon as I started to use it.
Any suggestions would be appreciated
We composed a list of Shopify flash sales apps, I think it's exactly what you need.