Shipping logic and rate control

Public Shopify App

Rate Lab

If you want a custom carrier service, but don't want to deal with deployments and management for a custom app, then Rate Lab can help. Take full control of your Shipping Rates with our DIY JSON/Liquid editor.

Shopify App Store Docs

Rate Lab is built for shipping scenarios where the default tools are too rigid. It helps stores handle more nuanced rate logic and delivery behavior without jumping straight to a fully bespoke shipping app.

For some teams, that is enough. For others, it becomes the foundation for a broader managed shipping workflow.

All apps & tools

Managed Shopify Functions delivery

Function Lab

Customer-specific shipping perks

Member Shipping

Ready to take a look?

Tell us a bit about what you need and we'll point you at the right app or help you adapt it.

Shopify App Store Docs