Carty: Cart Upsell Cart Drawer

I was looking for an app that would allow me to shorten the customer's buying journey, with the ability to choose multiple products without leaving the collection page, and then have a pre-purchase summary with the option of quantities. All for free.
It's done with this app! The integration and the rendering are very Pro.
And if like me you want to enter the code to customize this or that element, Rita (team) is a listening and qualified information very above average. It's professional and very pleasant. I am a real customer (Marketer) :) and recommend this app !
Bruno