by Byward Labs

Take control of your shipping costs

4.9 of 5 stars(28 reviews)

Control your shipping costs

Rules can limit on product, geography, weight and more!

Infinite combination of rules

Carefully crafted rules ensure peace of mind when managing shipping costs

Easy and intuitive setup

Quickly get your store up to speed using simple and easy to understand rules

About CustomShip


CustomShip is an international app built specifically for global merchants working in various currencies and languages!

We support English, French, Japanese, German, and Spanish with plans to add support for more.

Finally, you can customize shipping rates based on the specific product, weight, shipping destination, or price with unlimited possibilities.

Whether you charge an extra handling fee to ship to Hokkaido or you provide free local delivery in Fukuoka, we’ve got you covered! Don’t ship lithium batteries by air? You can set that option as well with CustomShip. The possibilities are endless so you don’t have to lose money on shipping or get stuck not being able to deliver an item to a customer.

CustomShip can help you do many things:

  • Set shipping rates for individual products
  • Restrict shipping to specific zip codes or prefectures
  • Customize shipping pricing by product, weight, price, location
  • Different shipping rules for small and heavy items

And much more…

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4.9 of 5 stars

The overall rating reflects the current state of the app. It accounts for all app reviews but prioritizes the most recent ones.
  • 5 of 5 stars
    89% of ratings are 5 stars
  • 4 of 5 stars
    4% of ratings are 4 stars
  • 3 of 5 stars
    0% of ratings are 3 stars
  • 2 of 5 stars
    0% of ratings are 2 stars
  • 1 of 5 stars
    7% of ratings are 1 stars

Most recent reviews


Best shipping app ever. Perfect for custom rates. The support was also great, they helped me to set up a complicated rate. Thanks.

Windy City Aquariums

This helped me customize my shipping rates exactly how I wanted it! Now I don't have to worry about under or overcharging for certain items, or restrict certain shipping methods for certain items. Took a while to get the hang of it but overall an amazing app. I don't know why Shopify doesn't have something like this already built into their shipping system. THANK YOU SO MUCH FOR MAKING THIS APP FREE!!! <3

Cat in the Box LLC

I can not believe this app is free. I don't have a complicated shipping set up, but as simple as it is, I couldn't get the built-in features in Shopify to accommodate me. I didn't want to pay a monthly fee for a shipping app. This app really allows you to have a lot of flexibility in establishing shipping settings -- where you ship, how you charge, and under what circumstances you charge. It seems a little daunting at first, but it's really very simple to use once you spend 5 minutes looking at the instructions!! More importantly, customer service is EXTREMELY responsive. I've used paid apps that have less customer service than this free one.