Building a Private Shopify App for Phone and In-Store Order Entry

Most Shopify merchants want more customers buying online. This one had a different problem. A large share of their customers are senior citizens who buy recliner chairs and mobility products over the phone or in person. They're not going to the website to check out. They call, or they walk in.

So staff place orders on their behalf, every day, all day.

The workflow they'd built to handle this worked. But it was held together with the wrong tools, and it was starting to show.

What they were doing before

The merchant had set up Shopify customer accounts with a special "staff" tag. When a tagged account logged in, it unlocked a draft order workflow on the storefront. Staff used that to create orders for customers who'd pay later via a payment link, or on delivery.

It got the job done. But it created a few real problems:

• Storefront pages existed only for internal use, never visible to customers

• Theme assets were added for features customers would never see or need

• Every theme upgrade became more complicated because of the custom storefront modifications sitting underneath it

• The order entry flow wasn't built for someone doing this 30 times a day

The storefront is where customers shop. Using it as an internal order management tool is a workaround, not a solution. And workarounds accumulate debt.

What we built: a private app for internal order entry

We built a private Shopify app, separate from the storefront entirely, designed around the staff workflow.

Staff log into the app and create orders through an interface built specifically for this purpose. Nothing customer-facing, nothing borrowed from the theme. Just the tools they actually need.

The app includes Shopify's native resource pickers, so finding a product or pulling up a customer record is fast. The order creation flow is short by design. Fewer steps means fewer mistakes and less time per order when you're doing it all day.

Orders can be created for payment later via link, or flagged for Cash on Delivery. Both were part of their existing process. The app just handles them without requiring the storefront to be involved.

Why a private app and not an admin customization

Shopify admin customizations have limits on what you can build and how deep you can go. A private app gives full control over the interface and logic. It also means the storefront is completely untouched. No more internal-only theme code that has to be managed alongside customer-facing code.

Future theme upgrades are now a storefront concern only. The internal ordering tool is independent of all of it.

Extending it to Shopify POS

The merchant has physical retail locations too. Staff at those stores needed the same workflow.

We extended the app to work with Shopify POS. In-store staff can open the app from POS, scan product barcodes with their mobile device, and add items to a cart directly. Same interface, same order creation flow, same payment options.

One workflow across both channels. That matters when you're training staff and troubleshooting problems. Fewer tools, fewer things to explain.

What actually changed for the merchant

The storefront is clean now. No internal pages, no staff-only theme assets, no tagged customer accounts doing double duty.

Theme upgrades don't require auditing internal order logic anymore. That alone saves real time every time Shopify pushes a major theme update.

Staff have a faster order entry experience. The old flow had unnecessary steps because it was built on top of a customer checkout path. The new one is built around what staff actually do.

And both the online team and the retail stores are using the same tool. When something needs to change, it changes once.

Not every Shopify business looks like a Shopify business

This merchant's customers prefer the phone. That's not going to change, and it shouldn't have to. The question is whether the internal tools match the way the business actually runs.

Patching a storefront to handle staff operations is a common pattern. It works until it doesn't, and then it's messy to unwind.

A private app built for the specific workflow is cleaner from day one, easier to maintain, and doesn't create friction every time you want to update your theme.

If your team is doing operational work through the storefront because there wasn't a better option at the time, there's usually a better option now.

Need a workflow like this?

If your store's internal operations have outgrown what standard Shopify tools handle well, we've built this kind of custom work before:

• Private apps for internal order management

• Shopify POS extensions and custom flows

• Staff-facing tools separated from the customer storefront

• Draft order workflows and payment link integrations

• Custom admin UI for business-specific operations

Running a Shopify store that needs tools built around how your team actually works? Get in touch.