Yes, this app requires the Shopify Carrier Service API feature. It's included in your plan if you are on Shopify Advanced or Shopify Pro plans. If you are on the Shopify plan, it's free with annual plans or $20 on monthly plans — contact Shopify to add Carrier Service API for you. If you are on Shopify Starter or Basic plan, you will need to upgrade your plan to use this app.
We offer a 14-day free trial so that you can check if the app suits your workflow and does what you need.
The app works everywhere that Shopify does.
Charging a minimal transaction fee allows us to accommodate businesses of all sizes from small startups to multinationals.