Custom Retail Inventory Management Software

The spreadsheet buying cycle is a choice, not a constraint

Most multi-location retailers arrive at their buying process from the same direction: they added locations faster than their system could keep up, so the buying team started maintaining stock positions in spreadsheets because the platform couldn't be trusted. Most off-the-shelf retail platforms track total quantity rather than variant-level quantity across locations, so a retailer with twelve colours and six sizes per style spread across eight stores watches the numbers drift. Custom inventory management software models your actual product hierarchy, style, colour, size, location, and keeps every position accurate after every sale, receipt, and transfer, with reorder automation following naturally from accurate stock data.

  • Variant-level stock tracking across every location with real-time accuracy after every transaction

  • Automated reorder point rules that generate purchase orders without manual buying team intervention

  • Full purchase order lifecycle from supplier catalogue through goods receipt and invoice matching

  • Supplier cost management with margin reporting and price variance alerts

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The problem

Sound familiar?

  • Stock levels in the system that don't match what's on the shelf because the current platform can't handle variant-level tracking across locations?

  • Buying team manually building purchase orders in spreadsheets because the system has no reorder point automation?

Short answer

RaftLabs builds custom retail inventory management software for multi-location retailers with complex SKU mixes. The software covers variant-level stock tracking across locations, purchase order creation and approval, automated reorder points, goods receipt, invoice matching, and supplier cost management. A custom system is the right choice when off-the-shelf platforms cannot model your product hierarchy or automate your replenishment logic accurately. Most retail inventory projects ship in 12 to 14 weeks at a fixed cost.

Key takeaways

  • Real-time POS integration deducts sold variants from location stock the moment a sale rings through, rather than nightly batch reconciliation that lets overselling creep into click-and-collect.
  • Safety stock and reorder points use a proper formula (Z-score, demand standard deviation, lead time) so coverage adjusts automatically as demand patterns shift, not a static number set once and forgotten.
  • Supplier lead time variability is tracked alongside the nominal figure, so replenishment accounts for a supplier who delivers in 9-21 days, not just their stated 14-day average.
  • ABC/XYZ classification and demand forecasting direct buying team effort and safety stock investment at the SKUs that actually drive the business.

Trusted by

Vodafone logo
Aldi logo
Nike logo
Microsoft logo
Heineken logo
Cisco logo
Calorgas logo
Energia Rewards logo

Retail inventory delivery, by the numbers

products shipped
100+
industries served
24+
cost delivery
Fixed
week delivery cycles
12-14

The spreadsheet buying cycle is a choice, not a constraint

Custom inventory management software models your actual product hierarchy and keeps every stock position accurate after every sale, receipt, and transfer, so reorder automation can follow naturally from accurate data.

Capabilities

What we build

  • 01
    SKU and variant management

    Product hierarchy matched to how your buying team works, with GS1 SGTIN encoding for item-level RFID tracking.

    Built with
    GS1 · RFID
  • 02
    Multi-location stock tracking

    Real-time POS-integrated deduction and ABC/XYZ classification directing buying effort to the SKUs that matter most.

    Built with
    Shopify · Square
  • 03
    Purchase order management

    Lead-time-variability-aware ordering, Zebra ZPL label generation at receipt, and automated invoice-variance flagging.

    Built with
    SAP · NetSuite
  • 04
    Reorder point automation

    Formula-based safety stock and EOQ calculation, with seasonal demand forecasting adjusting reorder points ahead of known peaks.

    Built with
    LightGBM · Prophet
  • 05
    Wastage and shrinkage tracking

    ABC-weighted rolling cycle counts with reason-coded write-offs and time-of-day shrinkage correlation reporting.

  • 06
    Supplier and cost management

    Landed-cost margin reporting and supplier performance tracking across fill rate, lead time, and return rate.

How we work

From scope to live inventory system

  1. Week 1
    01

    Location and SKU complexity scoping

    We map your location count, SKU complexity, current system, and where the buying team's biggest pain points are. You leave week 1 with a written scope document and a fixed-price quote.

  2. Weeks 2-5
    02

    Product hierarchy and replenishment design

    Variant model, safety stock formulas, and POS/ERP integrations designed against your actual buying process.

  3. Weeks 6-11
    03

    Build and integrate

    Stock tracking, purchase orders, and reorder automation built in parallel, tested against real sales data.

  4. Final 2-3 weeks
    04

    Launch and team training

    Buying and store teams trained on the new workflow before full rollout.

Why us

Why retailers choose RaftLabs

  • 01
    Senior engineers build what they scope

    The engineers who assess your buying process also build the solution. No bait-and-switch, no offshore handoff after the contract is signed.

  • 02
    Fixed price before development starts

    We scope the work, calculate the cost, and lock it in writing before any development starts.

  • 03
    9 years and 100+ products shipped

    Clients include Vodafone, T-Mobile, Aldi, Nike, Cisco, and Lockheed Martin. Track record building retail and supply chain platforms.

  • 04
    Modelled to your buying team's mental model

    The product hierarchy matches how your team actually thinks about product, not just what's technically correct.

  • 05
    Real-time deduction, not nightly batch

    Stock positions update the moment a sale rings through, preventing overselling in click-and-collect.

Have an inventory management project?

Tell us your location count, SKU complexity, current system, and where the buying team's biggest pain points are. We'll scope the right system and give you a fixed cost.

Talk about your inventory management project

Related services

Custom Retail Inventory Management Software, scoped in one call.

Tell us what's broken. Within one business day you get a straight take on cost, timeline, and the right first step. No deck, no pressure.

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Frequently asked questions

No artificial limits on attribute depth, variant count, or SKU volume. We've built for retailers with 200+ variant combinations per style and 50,000+ active SKUs. We model the hierarchy to match how your buying team actually thinks about product, by style, category, supplier, or season.

Stock allocation works at the variant and location level. When a goods receipt arrives centrally, the buying team allocates quantities to each store based on demand history and current stock position. For retailers shipping direct from supplier to store, the receipt is recorded at the store level instead.

Yes. Common integrations include Xero and QuickBooks for cost of goods data, and ERP systems including SAP, Microsoft Dynamics, and NetSuite. We also integrate with POS systems for real-time stock deduction at the point of sale rather than nightly batch.

Stock on hand by variant and location, sell-through rate, shrinkage by reason code, open PO status, supplier fill rate, and ABC/XYZ classification with demand forecasting for the next four and eight weeks, all exportable to your BI tool.

Work with us

Tell us what you need. We'll tell you what it would take.

We scope Custom Retail Inventory Management Software in 30 minutes. You walk away with a clear cost, timeline, and approach. No commitment required.

  • Scope and cost agreed before work starts. No surprises. No obligation.
  • Working prototype within 3 weeks of kickoff.
  • Pay by milestone. You see progress before each invoice.
  • 60-day post-launch warranty. Bug fixes, UI tweaks, and deployment support. No retainer.
  • All conversations are NDA-protected.

Go deeper

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