THACKER review for Trackr: Order Tracking UpSell

I have used this app time and time again. It's a wonderful feature to offer on an eCommerce site. Trackr's customer support is second to none. Consistently, over numerous sites, they have gone above and beyond to implement an array of requested customizations to fit very specific design standards of our theme–something that very few app developers will do. The result is a beautifully integrated app. An absolute A+++++