Challenge
Inventory drifts between store and web.
Agnotic approach
Event-driven sync with a single source of truth and reservation logic keeps stock consistent.
Retail Software
Custom Retail Software Development
We design and build custom software for retail — POS, inventory, and store operations integrated with eCommerce and ERP — so stock, sales, and customers stay in sync across every channel instead of drifting apart.
EMV / PCI DSSOmnichannelREST & WebhooksGS1
Trusted by global innovators
What custom retail software involves
Modern retail runs on many systems — POS, eCommerce, inventory or ERP, payments, and CRM — and the winners make them behave as one. Custom retail software fits your specific operation: the store formats, channels, and processes you actually run, rather than a rigid product that assumes someone else's retail.
The engineering challenge is real-time consistency and integration. Inventory races between channels, registers go offline, and each platform models orders differently. We build retail applications with an event-driven backbone, a canonical order and product model, and reconciliation for the edge cases retail always produces — so the software keeps store and web genuinely in sync.
Architecture
See how we design retail software — a canonical product/order model, event-driven sync across channels, and payment reconciliation.
Common failure modes
Retail software pitfalls — and how we handle them
Challenge
Registers go offline and sync late.
Agnotic approach
Offline-tolerant queuing and idempotent replay so transactions reconcile without double-counting.
Challenge
Each system models orders differently.
Agnotic approach
A canonical order and product model that every platform maps to.
Challenge
Payments and sales don't reconcile.
Agnotic approach
Automated reconciliation between POS, processor, and finance with an exception queue.
Custom Retail Software Capabilities
The application surface we build for retail operations.
POS & checkout
Custom point-of-sale and checkout tuned to your store formats and flows.
Omnichannel sync
Real-time product, price, order, and stock sync across store, web, and marketplaces.
Inventory & operations
Inventory, replenishment, and store-operations apps on a shared data model.
Payments & reconciliation
EMV/PCI-aware payments with automated settlement reconciliation.
Where it runs
Custom retail software we build
Omnichannel inventory
One live stock picture across store, web, and marketplaces.
Order orchestration
BOPIS, ship-from-store, and endless-aisle flows.
Custom POS
Checkout tuned to your store formats and hardware.
Store operations
Apps for tasks, replenishment, and associate workflows.
Customer & loyalty
Unified profiles and loyalty across channels.
Retail reporting
Consolidated sales and inventory reporting across stores.
Retail software that keeps channels in sync
Retail projects break on inventory races and offline sync, not a single API. We build for real-time consistency.
Real-time
Cross-channel sync
2–3 mo
Typical first release
Offline-tolerant
Registers keep working
Standards we build against
Retail software standards
EMVPCI DSSOAuth 2.0WebhooksGS1REST / JSON
Our Process
How we deliver custom retail software
Channel mapping, real-time sync, and reconciliation treated as the real work.
1.
Discovery & system map
We map your POS, eCommerce, inventory, payments, and CRM and set the source of truth.
Channel-mapped
2.
Model & sync design
A canonical product/order model with event-driven sync across channels.
Event-driven
3.
Build & test
Validated against real edge cases — offline registers, returns, and concurrent sales.
Edge-tested
4.
Rollout & support
Phased rollout across stores with reconciliation dashboards and support.
Supported
Why Partner With Us
15-Minute Scoping CallWhy teams trust us with retail software
Software that keeps channels in sync and lasts.
Payments-aware
EMV/PCI-conscious payments with reconciliation, so money ties out.
Retail depth
Fluent across POS, eCommerce, and ERP — we know where omnichannel breaks.
Real-time focused
Event-driven sync for near real-time consistency, not batch exports.
Full-stack fluency
From checkout UX to ERP integration, built as one system.
Frequently Asked Questions
A focused first release — a custom POS or an inventory-sync app — typically ships in 2–3 months, with broader platforms phased across stores. Integration with eCommerce, ERP, and payments drives the timeline more than the app, so we scope from your real stack.
Ready to build retail software that stays in sync?
Tell us your stores, channels, and systems. We will return a realistic, integrated retail software plan.
contact@agnotic.com
Partnerships
contact@agnotic.com