POS system that can't handle your product variants, locations, or tender types without manual workarounds at checkout?
Loyalty and POS on separate systems so staff manually look up points and customers have no real-time balance?
Custom Retail POS Software Development
Custom POS software for multi-location retailers, specialty retailers, and retail tech companies -- built for your product variants, tender mix, and loyalty integration rather than the median retailer the off-the-shelf platforms were designed for.
We build POS systems that handle complex product catalogues, multi-tender splits, loyalty earning and redemption at the till, and offline operation when connectivity drops -- all without the workarounds that slow down every checkout.
Multi-tender checkout handling card, cash, gift card, voucher, and split payments in one transaction
Real-time inventory deduction at point of sale with low-stock alerts across all locations
Customer lookup and loyalty earning and redemption integrated directly at the till
Offline transaction processing when connectivity drops, with automatic sync on reconnect
RaftLabs builds custom retail POS software for multi-location retailers, specialty retailers, and retail tech companies. A custom POS is the right choice when your product variants, tender types, or loyalty integration exceed what Square or Lightspeed can support without manual workarounds. Most retail POS projects ship in 12--14 weeks at a fixed cost with full source code ownership.
100+Products shipped
·24+Industries served
·FixedCost delivery
·12-14Week delivery cycles
When off-the-shelf POS becomes the problem
Square and Lightspeed are built for common retail use cases. If you sell clothing with size and colour variants, run multiple locations with separate stock pools, accept gift cards and loyalty vouchers alongside card and cash, or need a loyalty programme that actually integrates with the till rather than sitting next to it, you will spend a lot of time working around the platform rather than through it.
The cost of those workarounds is real. Staff slow down every checkout to handle the exception. Managers reconcile discrepancies between what the POS recorded and what the loyalty system shows. Inventory counts drift because the POS can't track stock at the variant and location level. These are not edge cases -- they are the daily reality of running a serious retail operation.
A custom POS is scoped to your product structure, your tender mix, your loyalty programme, and your location setup. The result is a system where checkout is fast because it handles every transaction correctly, not just the simple ones.
What we build
Transaction processing
Barcode scan and item lookup with support for your full product and variant catalogue. Multi-tender checkout in a single transaction: card, cash, gift card, voucher, and split payment across any combination. Discount application at line level or basket level with configurable rules and cashier permissions. Returns and exchanges handled without creating a separate manual process. Receipt printing, email, and SMS receipt options. Fast transaction flow designed for queue-clearing speed at peak periods -- not just for the simple sale.
Inventory sync at point of sale
Real-time stock deduction at the variant and location level on every transaction. Low-stock alerts displayed at the till or sent to the buying team when a SKU falls below a configured threshold. Automatic reorder trigger sent to your purchasing system or buying team when reorder points are breached. Backorder and pre-order handling so customers can buy a product not currently in stock at that location. Stock reservation for click-and-collect orders pulled from the correct location's inventory. The inventory accuracy that means your stock reports match what's on the shelf.
Customer and loyalty integration
Customer lookup at checkout by phone number, email, loyalty card, or QR code scan from a mobile app. Points earning calculated and applied automatically on transaction post -- no manual staff entry. Points redemption at the till with cashier confirmation and live points balance display on the customer-facing screen. Tier status visible at checkout so cashiers can acknowledge top-tier customers without checking a separate system. Customer purchase history accessible during the transaction for personal service. The loyalty integration that makes every checkout a loyalty touch point rather than a points-entry chore.
Multi-location and cashier management
Till assignment and cashier session management with individual login, cash float declaration, and session close. Cashier permissions configured by role: discount limits, void authority, override capability. Stock transfer requests initiated from the POS when a customer wants an item available at another location. Consolidated reporting across all locations from a single management view. Location-specific promotions and pricing rules configurable centrally and applied at each store automatically. The multi-location control that gives you one version of the truth across every site.
Offline mode
Local transaction processing when internet connectivity drops -- customers check out at normal speed with no error messages. Transactions queued locally and synced to the central system when connectivity returns. Conflict resolution for inventory movements that occurred offline at multiple locations simultaneously. Loyalty points held in a pending state and credited automatically on sync. Offline mode status visible to cashiers so they know when they are operating locally. The resilience that means a connectivity issue never causes a queue or a lost sale.
End-of-day and reporting
Cashier reconciliation with expected cash versus declared cash and discrepancy flagging. Sales reporting by product, category, tender type, and location for the current day, week, or custom period. Void and discount reporting with cashier attribution for loss prevention review. Hourly transaction volume for staffing and queue management decisions. Export to accounting or BI tools in standard formats. The reporting layer that takes minutes to review, not an hour to compile -- delivered automatically at end of day without manual assembly.
Frequently asked questions
Off-the-shelf POS platforms handle standard retail well: simple product ranges, card and cash, single-location stock. Custom POS makes sense when you have complex product variants the platform can't model correctly, loyalty programme integration that goes beyond a basic points tally, tender types the platform doesn't support natively such as multi-voucher splits, or multi-location inventory that needs real-time accuracy at the variant level. If your staff spend time working around checkout limitations every day, the cost of a custom POS is usually recovered within the first year in time saved and errors avoided.
We build POS software that runs on standard retail hardware: Windows-based tills, Android tablets, and iPads. Receipt printer support covers Epson, Star Micronics, and most ESC/POS compatible printers. Barcode scanner support covers USB, Bluetooth, and 2D imager scanners. Customer-facing display support for dual-screen setups. Payment terminal integration via SumUp, Stripe Terminal, Adyen, or your existing payment provider's SDK. We confirm hardware compatibility during project scoping based on your existing hardware or your preferred procurement route.
The POS connects to the loyalty engine as a real-time service call at checkout. When the cashier looks up a customer, the POS retrieves their current points balance, tier status, and any available rewards. On transaction completion, the POS sends the transaction total and line items to the loyalty engine, which calculates points and applies any redemptions. The customer sees their updated balance on the receipt or customer-facing screen. If you have an existing loyalty platform, we build the POS integration against its API. If you need a loyalty platform built alongside the POS, we scope both together so they work as a single system from the start.
A custom retail POS covering transaction processing, inventory sync, cashier management, basic loyalty integration, and end-of-day reporting typically takes 10 to 14 weeks from requirements sign-off to go-live on a pilot location. Multi-location rollout, complex loyalty integration, and offline mode add time depending on the scope. We scope precisely before committing to a timeline. Pilot location goes live first -- we run it there for two to four weeks before rolling out to your full estate so issues surface in a controlled environment, not across all locations at once.
