Commerce, POS & Business Systems · Service 01 of 11

POS Software Development point-of-sale systems that keep selling, online or offline

O Clock Software, headquartered in Chennai, India, builds custom point-of-sale software for retail, food service and service businesses, on tablets, terminals and phones. Our POS systems keep working offline, sync stock and sales across outlets, and connect to online stores, ERP and loyalty systems. We also build and run our own Restaurant POS product.

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  • 2009Founded in Chennai
  • 1,000+Projects delivered
  • 12+Countries served
  • 100+Engineers in-house
  • 4.6★Google rating · 59 reviews

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What we build

POS Software Development: what we build

Point-of-sale systems for retail, food service and service businesses. Here are the six kinds of POS software development work we are asked for most often.

POS architecture

Four ways to build a POS system, and when each fits

The architecture decides what happens when the internet drops, how fast data reaches head office and how outlets are managed.

How we deliver

How we deliver POS Software Development

  1. 01

    Outlet visit

    Watch how orders and checkout really work at busy times.

  2. 02

    Workflow and hardware plan

    Screens, devices, printers and integrations agreed.

  3. 03

    Build and pilot

    Pilot in one outlet and fix what real use reveals.

  4. 04

    Rollout

    Outlet by outlet, with staff training and device set-up.

  5. 05

    Support

    Device support, updates and new features.

Technology

Technology for POS Software Development

Chosen per project for fit, maintainability and your team's skills.

POS apps

  • Kotlin
  • Flutter
  • React
  • Electron

Back office

  • Node.js
  • Laravel
  • PostgreSQL

Offline & sync

  • SQLite
  • Local queues
  • Conflict-safe sync

Hardware

  • Android POS terminals
  • Thermal printers
  • Barcode scanners
  • Card terminals
  • Kiosks

Straight answers

Is POS Software Development right for you?

We would rather recommend less than sell you more. Here is how we judge it.

A good fit when

  • You run several outlets or many terminals
  • Standard POS apps do not fit your workflow
  • Stock and sales must sync with online channels
  • Internet at outlets is unreliable

  • You run one outlet with a standard menu or range

    An off-the-shelf POS app is usually quicker to start.

  • You only need online selling

    See eCommerce Development.

  • Your problem is stock accuracy, not checkout

    Fix stock first; see Inventory Management Software or RFID Software Development.

Use cases by industry

POS Software Development by industry

The same capability, shaped by the data, rules and users of each sector.

Related work

Where we have shipped this

Platforms in production that use this capability. See all work

Related services

Often combined with POS Software Development

Solutions built on this service

Prefer engineers in your own team?

Our own products

The full service area

FAQ

POS Software Development FAQ

What does custom POS software include?

Custom POS software typically includes checkout screens, product and stock management, receipts, staff accounts and permissions, reports, hardware connections such as printers and scanners, and integrations with online stores, ERP and loyalty systems.

Can a POS work without internet?

Yes. We build offline-first POS systems where each terminal keeps working without internet and syncs sales and stock when the connection returns, with safeguards against duplicates.

Should we build a custom POS or buy one?

Buy an off-the-shelf POS for one or two outlets with standard workflows. Build a custom POS for many outlets, unusual workflows, or tight integration with your own online store, ERP or loyalty systems.

Which devices can the POS run on?

Our POS systems run on Android POS terminals, tablets, Windows machines, phones, handhelds and self-service kiosks, connected to printers, scanners and card terminals.

Can the POS connect to our online store?

Yes. We connect POS and online stores to a shared product and stock model, so in-store and online sales update stock in near real time.

How do you roll out a new POS across many outlets?

We pilot in one outlet during real trading, fix what staff and customers reveal, then roll out outlet by outlet with device set-up, menu or product data migration and staff training, keeping the old system available until each outlet is stable.

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