Kilarity Custom Shipping
A Shopify app that brings shipping rates optimized for Japan to your checkout. Set rates per prefecture, and for about 150 inhabited remote islands with no postal codes required, on every Shopify plan.
Kilarity
Freelance Web Developer
Ryuya Shingaki’s Website.
Products
Works
-
PRODIG Inc.
- E-Commerce
- Website
2023 -
Ongoing support for building and improving websites for used-smartphone e-commerce, trade-in, and repair services.
-
TIRE STATION THINK Inc.
- Website
- Ads
2019 -
Ongoing support for website development, improvements, and Google Ads management.
-
Kashimura Holdings Inc.
- Website
2018 -
Ongoing support for improving and maintaining the corporate website.
* Honorifics omitted
Service
E-commerce site development and improvement
From building e-commerce sites, mainly with Shopify, to ongoing improvements and operational support — I can handle just about anything, including advanced customizations such as custom apps beyond theme work.
Websites and owned media
Building, improving, and operating websites with WordPress or a headless CMS architecture powered by Sanity — I can handle just about anything.
Shopify app development
I develop Shopify apps as my own original products. On July 13, 2026, I released Kilarity Custom Shipping, a Shopify app for customizing shipping rates, optimized for Japan and its many remote islands.
Kilarity Custom Shipping | Shopify App Store (opens in a new tab)
About
Learn more about Ryuya Shingaki and Kilarity here.
Contact
Feel free to get in touch about e-commerce sites, websites, or anything else web-related.