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Shopify stores, themes and apps, built for one store.

A store set up from scratch, a custom Liquid theme or a Hydrogen storefront, or a private app for the thing the App Store does not do. B2B catalogs and price lists fed from your ERP, discounts and shipping with Functions and checkout extensions on Plus, and migrations off retired Scripts. Fixed price, everything in your Partner account.

From $1,500 · From 10 business days · 30-day warranty
LiquidOnline Store 2.0HydrogenShopify FunctionsCheckout UI extensionsAdmin and Storefront APIRemix and Node

Everything we do on Shopify

Pick one or several. The quote names which of these it covers and what it does not. Anything else is a written change request with its own price.

New store builds

Catalog, collections, payments, shipping, markets and the launch checklist.

Custom themes

Liquid and Online Store 2.0 sections from your Figma file or our design. Speed score checked on real pages.

Read the guide

B2B pricing

Company profiles, catalogs and volume pricing on any plan, fed from your price list by a custom app. Contract pricing per company and discount Functions on Plus.

Read the guide

Checkout extensions

Extra fields, file uploads, validation, VAT exemption, gated checkout.

Scripts to Functions

The behavior your store had before Scripts stopped on June 30, 2026, rebuilt on Functions.

Read the guide

Admin tools

Bulk actions, reports and approval flows inside the Shopify admin.

Connectors

ERP, accounting, warehouse and 3PL sync, two-way.

Moving to Shopify

From WooCommerce, Magento, Wix or BigCommerce. Products, customers, order history and a redirect map, on a development store while the old one keeps selling.

Moving to WooCommerce

The other direction too. We build the WooCommerce store, move the data, and map every old URL, so rankings and bookmarks survive.

Read the guide

Subscriptions

Shopify Subscriptions or a subscriptions app set up with the selling plans your products need, and subscriptions moved in where the gateway lets the saved cards follow.

Speed

A slow theme measured, then fixed at the cause: apps, sections, images, scripts, in that order.

Your Partner account

Theme and app live in your account from the first commit.

Not included by defaultPublic App Store listings, marketing apps, content and photography.
When we say noIf a Theme Store theme fits your catalog, or an App Store app covers your list for $20 to $100 a month, the quote says so.

Shopify development, from $1,500 fixed

From 10 business days. Half to start, half when you accept the delivery on staging. Change requests are written up as new quotes. If you want us to stay after launch, retainers from $249 a month keep it updated, backed up and watched.

Get a fixed quote

How a project runs

No sales call. A form, a quote, a build, a warranty.

Start with a brief
Day 0

Brief

Two or three sentences on what you need built.

Takes two minutes
Day 2

Fixed quote

Scope, price, delivery date, and what is not included. Or a straight answer that a plugin or a theme will do.

Two business days
Week 1 on

Build and test

Weekly progress on a staging copy. Automated tests plus a manual pass on real orders.

One project at a time
Launch

Release and warranty

Live with you. Anything in our work that misses the quote in the first month is fixed without an invoice.

30 days included

Questions about Shopify development

Does this need Plus?

Depends on the job. Store builds, themes, B2B company profiles with up to three catalogs, and custom apps that use the Admin API run on any plan. Custom apps that use Shopify Functions, checkout UI extensions on the checkout steps, unlimited catalogs and per-company pricing are Plus features. The quote says which side your list falls on.

Theme Store theme or custom?

A Theme Store theme is right when your catalog fits its templates. Custom is right when the design exists already, the product page needs its own logic, or the theme you have is slow and you have run out of settings to change. Most custom themes land between $4,500 and $9,000.

Can a custom app work with an existing wholesale app?

Usually. But two systems setting prices is the failure we get called in to fix, so the quote will probably recommend replacing it.

Who hosts the app?

A small Node service on your hosting or ours, quoted as part of the build. No per-order fees.

Can you move us from WooCommerce or Magento, or off Shopify?

Both directions. Products, customers, order history and the redirect map come across. Paid apps and custom code are rebuilt, not copied. Customer passwords never move, and saved cards on Shopify Payments cannot leave Shopify, so we plan the switch around both.

Tell us what you need built.

Two or three sentences is enough. No sales call.

  • A written quote within 48 hours
  • Or a straight answer that a plugin or a marketplace theme will do
  • Replies within one business day
support@appbuff.net

What happens next

1We read the brief and look at the store, if there is one.
2Then a written quote, or a plugin or theme recommendation, within two business days.
3You accept, we start within a week.
1What do you need built?

2Your details

Written quote within 48 hours. Existing stores are worked on as a staging copy, never live.

1What is it about?

2Your message

Replies within one business day, Monday to Friday. Warranty issues on live stores are looked at the same day.