Sales pop-up boosts conversions: Add the Sales Pop-up social evidence app now to show the latest Sales popups & stock countdown timer on your shop to boost excitement & Sales. Sales pop-ups for social proof: Sales pop-ups allow you to see recent sales alerts, creating confidence and social proof that will encourage visitors to purchase. A stock countdown timer that displays new transactions & latest orders will encourage tourists to buy now, using urgency, shortage, and fear of losing out, i.e.