We are a local store in Argentina with the dream of growing up and expand our business, but for most needs we had, shopify's lack of south american services resources wasn't making things easy. That was untill we gave Ship.System a try. After lots of fails by every other app in the shopify's market, Ship.System managed to adapt custom carrier rules to our very speciffic needs, and with the extraorinary support from Jonathan it has been faster and smoother than we ever imagined.
The App is solid in every aspect, even interface is very clear and friendly. If ever your store needs support for carrier services, Ship.System will be no doubt the definitive tool for you.

I searched the app store for a solution to our shipping needs for one that would accurately calculate weight, size and cost for combined products of different dimensions. We also needed integration with Canada Post, which is our most used carrier. After wasting time trying out others that turned out not to work or couldn't accept product dimensions in units under 1 inch, I was afraid this one would be the same. Happily, Ship Systems does just what we want! Another bonus is that the office staff were able to figure out how to use it while processing orders without any help.
I can't say enough about how excellent the support has been! Jonathan replied quickly to my support requests and went above and beyond to correct my issues. He even helped with workarounds for some Shopify deficiencies and came up with a solution to our need for free shipping for one product.
I highly recommend this app for Canadian users.

so we as a business had a problem that our main product gets sold as a box of thirty. however we offer 3 other variants of the products and they are sold singularly, so there was no real way to organise a accurate price on products of different sizes and different order values, Jonathon app, allowed me to enter my product sizes, and automatically calculates the order and sync to the carrier rates, so your end user gets a true price, but one of the biggest advantages was a link was provided so our packing team can access the data and its gives a graphical representation of how to pack the box in the way it has quoted for, cutting down on packing mistakes but also improving speed of the packing, this was an issue we was not looking forward to having to tackle, and has been made easy, thank to Jonathon, we are not linked in any way although he has helped us ongoing ly during this process im just a firm believer of giving good reviews when its warranted :)