Cartix Cart Discount + Upsell

Like it, don't love it. I'm not sure of the value of this and why it is a separate app to the very competent EG auto add to cart app. The concept is strong but the options limited and only work in the 'draw' not the full cart. When the 'draw' is out, the options are static and so it is difficult for a customer to scroll their cart on mobile as the static upsell covers most of the screen. I've stuck with it as I am using the EG auto app. If I had found this in isolation I wouldn't be using it until it is developed further.

It's really a perfect app. The only problem is there is no CSS guide or even a link to its default css file.