Essential Upsell & Cross Sell

Update: They recently updated their ToS and now require full access to customer personal information and all orders for last 60 day. I take my customer data protection serious and do not see why they need this info. Moving to 1 star and unnstaling. Here is what the ToS is :

View personal data
Customers
Name, email address, phone number, physical address, geolocation, IP address, browser and operating system
View store data
View orders
All order details for the last 60 days

I 100% recommend this app for cross-sell. This app is simple and effective. I have been using it for the cross-sell functionality and it has led to a purchase of the cross-sell every time!