by Byward Labs

Take control of your shipping costs

4.9 of 5 stars(16 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…

Media gallery




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
    81% of ratings are 5 stars
  • 4 of 5 stars
    6% 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
    13% of ratings are 1 stars

Most recent reviews

I have now paid several months for an app $ 10 a month, which can do less than this free app. The settings are a little confusing at the beginning, at least if you read them in German, but the support has everything I did not understand very much quickly explained. am absolutely thrilled and can only recommend it!

see it in action at

Tiny Pete & Family™: The Last Responders™

It's shocking to me that this app is free. I've used numerous shipping apps on the Shopify platform, and even written my own custom shipping apps for some situations. The flexibility and power of this app is amazing, offering functionality that you'd typically find in apps costing $20+ per month. The app is well designed and does everything I need it to. It's good enough that I would have no problem paying for it.

Kiwi Best Buy

I needed a solution to be able to charge different weight-based shipping rates according to postcode.
At first, I thought it was going to be complicated so reached out to support and Philip was very helpful. It turned out being a very simple process to setup and I was just way overthinking it.
CustomShip is going to save us time and money.