No. You can use Delivery Rates by Distance without having Store Pickup + Delivery installed. Delivery Rates by Distance is used purely to calculate rates based on distance. If you require a delivery calendar you can use Store Pickup + Delivery alongside Delivery Rates by Distance. They work great together!
Yes, the app will work with zipcodes, postal codes and postcodes from all counries.
As long as your plan includes access to the Carrier Calculated Shipping API the app will work perfectly. Please check with Shopify support to see if you have access. If you don't then you can either pay Shopify an additional $20 per month for Carrier Calculated Shipping API access, or switch to an annual plan and they'll include it for free.
Yes, we offer a 14-day free trial for all new installs.
There is no lengthy contract. You will be billed one month at a time. The charge will appear on your Shopify invoice. You are free to cancel anytime by clicking uninstall from your Shopify Apps page.
The app is currently priced at $10 USD per month.