# Custom Inventory Management Software UK

Source: https://dijituldevelopments.co.uk/inventory-management-software/
Updated: 2026-10-10

> dijitul developments builds custom inventory management software for UK wholesalers, retailers, manufacturers and online sellers. We track stock across locations, bins, batches and serial numbers, suggest purchase orders, and keep stock levels in sync with Shopify, WooCommerce, marketplaces and Xero. Every system starts with a free chat and is built to a fixed-price quote.

## Problems this solves

- The website says in stock, the shelf says otherwise
- Stock is counted in a spreadsheet that is wrong by Wednesday
- You oversell on one channel because another sold the last unit
- Reordering depends on someone noticing the shelf is empty
- Nobody can say what the stock is worth at month-end

## Key facts

- Every stock change recorded as a movement, so levels can always be explained
- Multi-location, bin, batch, expiry and serial number tracking
- Barcode scanning with phone cameras or handheld scanners
- Stock sync to Shopify, WooCommerce, OpenCart, Magento and marketplaces
- Reorder suggestions from stock levels, lead times and sales history
- Stock valuation and cost of sales posted to Xero, QuickBooks or Sage

## Why stock goes wrong

Stock levels drift for predictable reasons. Goods arrive and are put away before anyone books them in. A returned item goes back on the shelf but not into the system. An online order and a counter sale both take the last unit. A spreadsheet is overwritten by an older copy. Over weeks, small errors add up until nobody trusts the numbers and staff walk to the shelf to check.

Good inventory software fixes this with one rule: stock is never edited directly. Every change is a movement with a reason, a quantity, a location, a user and a time. The current level is the sum of the movements. When a number looks wrong, you can see exactly how it got there. Movements also give you history for free: what sold, when, from where, and how long each line sat on the shelf before it moved.

## What we track

We design the data model around what you hold and how you sell it:

- **Locations and bins**: several warehouses, shops or vans, each with bin or shelf positions to speed up picking.
- **Units of measure**: buy by the pallet, store by the box, sell by the each, with conversions handled automatically.
- **Batches and expiry dates**: for food, chemicals, cosmetics and anything with a shelf life, with first-expiry-first-out picking and recall tracing.
- **Serial numbers**: for equipment and electronics, so you know which unit went to which customer.
- **Kits and bundles**: sell a bundle, reduce each component.
- **Allocated and free stock**: stock reserved for confirmed orders is separated from stock available to sell.

## Scanning on the warehouse floor

Data entry at a desk is where errors creep in. We build mobile screens for goods-in, put-away, picking, transfers and stock takes that work with the camera on a phone or with rugged Android handhelds, which usually act like a keyboard and type the code into the focused field. Each scan is validated straight away: wrong product, wrong bin or wrong batch triggers a clear warning.

Built as a [progressive web app](https://dijituldevelopments.co.uk/progressive-web-app-development/), these screens install on the device without an app store and can queue scans in local storage if Wi-Fi drops at the back of the warehouse, syncing when the connection returns. Rolling stock takes, counting a few bins each day, replace the dreaded annual count for many clients.

## Selling on several channels

Overselling is the classic multi-channel problem. Your inventory system becomes the single source of stock truth: orders flow in from Shopify through its Admin GraphQL API, from WooCommerce, OpenCart or Magento through their REST APIs, and from marketplaces such as Amazon and eBay. Available stock is pushed back out to every channel after each movement, with a safety buffer per channel if you want one.

We have done this kind of work for a long time. Our early OpenCart work included bulk product loading and stock feeds, and our KashFlow and OpenCart integration kept stock and prices in sync between shop and accounts. The same principles apply now, with webhooks, queues and retries doing the heavy lifting. See [marketplace integration](https://dijituldevelopments.co.uk/marketplace-integration/) and [Shopify integration](https://dijituldevelopments.co.uk/shopify-integration/).

## Purchasing and valuation

Reorder suggestions use minimum levels, supplier lead times and recent sales velocity, so buyers get a list of what to order rather than discovering gaps. Purchase orders are emailed to suppliers, part-deliveries are booked in against them, and supplier invoices can be matched before posting to your accounting package.

For finance, the system calculates stock value using the costing method you choose, such as average cost or FIFO, and can post cost of sales and stock adjustments to Xero, QuickBooks Online or Sage through their APIs. Month-end stock valuation becomes a report rather than a project.

## Inventory as part of a bigger system

Inventory is often the first module of a wider [custom ERP](https://dijituldevelopments.co.uk/erp-development/), later joined by sales orders, production and despatch. It can also stand alone beside a package you already use. Either way, the project starts with a free chat, then scoping and a fixed-price quote, and you own the result. See our wider [bespoke software development](https://dijituldevelopments.co.uk/bespoke-software-development/) approach, or [get in touch](https://dijituldevelopments.co.uk/contact/).

## What we deliver

- Product, variant and unit-of-measure catalogue
- Stock movement ledger with goods-in, transfers, adjustments and despatches
- Mobile scanning screens for goods-in, picking and stock takes
- Purchase order management with supplier prices and lead times
- Channel stock sync and order import
- Stock valuation, ageing and reorder reports

Technologies: Laravel, PostgreSQL, Shopify Admin GraphQL API, WooCommerce REST API, Xero API, Redis

## FAQs

### Can it stop us overselling on Shopify and Amazon?

Yes. dijitul builds inventory systems that act as the single source of stock, importing orders from each channel and pushing available stock back after every movement. Optional per-channel buffers add a safety margin for marketplaces that update slowly.

### Do we need special barcode scanners?

Not necessarily. dijitul builds scanning screens that work with a phone camera for light use, or with rugged Android handhelds for busy warehouses. Most handhelds act as a keyboard, so they work with a web app without special drivers.

### Can it track batches and expiry dates?

Yes. We record batch numbers and expiry dates on goods-in, enforce first-expiry-first-out picking where needed, and can trace which customers received a given batch if you ever need to recall it.

### Will it post stock values to Xero?

Yes. dijitul can post cost of sales, stock adjustments and supplier bills to Xero, QuickBooks Online or Sage through their APIs, using the costing method you choose, so stock value in the accounts matches the system.

### How is inventory software priced?

dijitul does not publish prices. After a free chat we scope what you hold, how you sell and which systems need connecting, then give a fixed-price quote. Larger projects are split into phases, each priced separately.

## Pricing and contact

Every project gets a fixed-price quote after a free initial chat and a short scoping stage. You own the code and the data. Book a free chat: https://dijituldevelopments.co.uk/contact/ · 01623 650333 · info@dijitul.uk