Rate Lab

Liquid logic shipping rates

by Pogodan · Launched: October 2025

5.0 (1) on Shopify Built for Shopify

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DIY Custom Carrier Service. Design your own shipping rates using our JSON/liquid editor.

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About Rate Lab

Rate Lab is a DIY Custom Carrier Service solution. You have full control over what rates are returned to checkout. If you're considering a custom carrier service, but don't want to build and maintain a custom app, this is the solution for you. Take full control of your Shipping Rates with Liquid rate logic Copy/paste common use cases from our sample library Available to all Shopify plans

Last verified: July 17, 2026 · Fresh

App details

Developer: Pogodan
Category: Orders & shipping
Pricing: Paid
Launched: October 2025
Rating: 5.0 (1) on Shopify

Key features

DIY Custom Carrier Service
Design your own shipping rates using our JSON/liquid editor

Integrations with:

Shopify Admin

4 plans · 7-day free trial

Basic Plan

$39/month

Grow Plan

$79/month

Advanced Plan

$149/month

Plus Plan

$299/month

Plans and prices as listed on the Shopify App Store.

Ratings & reviews

based on 1 Shopify App Store reviews

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I am hoping this will solve our problem of saving customers money on shipping by switching from UPS to fright at a certain quantity order. This was a great idea and setup by Pogodan.

— Ohio Earth Food Organic Fertilizer

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