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Industries · Grocery & supermarkets

Software development for grocery stores and supermarkets

Take grocery orders online and pick them accurately from the same shelves your walk-in customers use.

Grocery and supermarket software screens: storefront catalogue in a browser, picker app on a phone and a seller orders card
Illustrative preview

At a glance

The short version

What it is

Store-connected grocery software: online ordering, picker apps, weighed items, substitutions, slot or express delivery and POS stock sync.

Rows of red apples, oranges and lemons neatly stacked in a supermarket fresh produce section
How it works
  1. Customer app
  2. Picker app
  3. Customer
  4. Order system
  5. 2 more
Runs on
  • Android
  • iOS
  • PWA
  • Website
  • Admin
Who it's for

For supermarkets, grocery chains, kirana networks and hyperlocal grocery startups that fulfil orders from stores or dark stores.

Cost depends on
  • Fulfilment model
  • POS integration
  • Catalogue scale
and 1 more factor

Flutter and the related logo are trademarks of Google LLC. We are not endorsed by or affiliated with Google LLC.

How to start

Tell us what you need in your own words. You talk to the developers who would build it and get a written, line-item estimate.

Get a project estimate

Grocery is the hardest kind of retail to take online

A grocery basket has dozens of items, many perishable, some sold by weight and a few likely to be out of stock by the time the order is picked. Customers expect delivery within a promised window, and margins leave little room for re-deliveries.

We build grocery software that starts with operations: accurate store stock, picker apps that handle weighed items and substitutions, delivery slots matched to capacity, and payment flows that settle the final bill correctly when weights change. The customer app and website sit on that foundation, designed for fast repeat ordering on budget phones.

Challenges

What makes grocery e-commerce difficult

  1. Out-of-stocks after ordering

    Shelf stock differs from system stock, so items go missing at picking and customers receive short deliveries.

  2. Weighed and loose items

    Vegetables, fruit and staples are ordered by estimate but billed by actual weight.

  3. Perishables and expiry

    Dairy, bakery and fresh produce need expiry checks and cold handling.

  4. Delivery economics

    Small baskets and failed deliveries make every routing decision matter.

  5. Pickers versus shoppers

    Pickers compete with walk-in customers for the same shelves at peak hours.

Store-to-doorstep grocery capabilities

  • Weighed-item billing

    Variable-weight barcodes and scale integration, with the final bill adjusted after picking.

  • Substitution rules

    Customers pre-approve substitutes; pickers propose alternatives in-app for approval.

  • Picker app with zone routing

    Pick lists sorted by aisle or zone, barcode verification and crate labelling.

  • Slot and express delivery

    Capacity-based delivery slots alongside quick delivery within a set radius.

  • Repeat baskets and subscriptions

    One-tap reorder of usual items and daily milk or bread subscriptions.

  • POS and stock sync

    Online stock drawn from store POS inventory with safety buffers, synced continuously.

How it works

How a grocery order moves from app to doorstep

Picking, weighing and substitutions are part of the flow, so the final bill matches what arrives at the door.

  1. Customer app

    Step 1: Customer fills a basket

    Usual items are one tap away, and search understands local names, so dhaniya finds coriander.

  2. Customer app

    Step 2: Delivery slot or express chosen

    Only slots with picking and delivery capacity left are shown; express delivery appears within the set radius.

  3. Picker app

    Step 3: Picker collects aisle by aisle

    The pick list is sorted by aisle, each item is scanned, and loose produce is weighed on the store scale.

  4. Customer

    Step 4: Customer approves a substitute

    If an item is missing, the picker proposes an alternative in the app and the customer accepts or declines it.

  5. Order system

    Step 5: Final bill adjusted

    Actual weights and substitutions update the bill, and any difference is refunded or collected before delivery.

  6. Delivery partner

    Step 6: Delivery partner delivers

    Labelled crates are handed over, the customer tracks the delivery live and confirms it with an OTP.

  7. Store POS

    Step 7: Store stock stays in sync

    Online sales reduce POS stock, so walk-in and online shoppers see the same shelf.

Platforms

Apps for shoppers, pickers and store managers

  • Mobile

    Android app

    Apps for Android phones and tablets, tested on budget and mid-range devices and published on Google Play or privately.

  • Mobile

    iOS app

    Apps for iPhone and iPad, built to Apple's guidelines and released through TestFlight and the App Store.

  • Web

    Progressive web app

    Installable web apps with offline support and notifications, useful when an app-store listing isn't essential or phones have little storage.

  • Web

    Website

    Marketing and content websites: fast, search-friendly pages with a CMS your team can update without a developer.

  • Back office

    Admin dashboard

    Back-office panels for operations, support and finance teams: orders, users, content, reports and permissions.

Technology

Grocery platform technology

  • Mobile

    Flutter

    Build Android and iOS apps from one shared codebase, so you launch on both platforms faster with a consistent experience.

    Used for

    • Mobile apps
    • Delivery apps
    • E-commerce apps
    • Booking apps
  • Backend

    Node.js

    Runs the server side of apps: fast, scalable back ends that power your app, website and integrations.

    Used for

    • App back ends
    • Live order tracking
    • Chat and notifications
    • Payment processing
  • A reliable database for the records your business runs on: orders, payments, bookings and stock, kept accurate and easy to report on.

    Used for

    • Orders and customers
    • Payments and ledgers
    • Stock and inventory
    • Bookings
  • Data

    Redis

    Keeps frequently used data in fast memory, so apps stay quick on busy days and live features like order tracking feel instant.

    Used for

    • Faster apps
    • Live order status
    • Shopping carts
    • Job queues and alerts
  • Payments & maps

    Google Maps Platform

    Adds maps, address search, live tracking and travel-time estimates to delivery, ride and field apps, so orders reach the right door.

    Used for

    • Live delivery tracking
    • Address search
    • Store locator
    • Distance-based fees
  • Payments & maps

    Razorpay

    Lets customers in India pay by UPI, cards, netbanking or wallets, and handles subscriptions, refunds and payouts to sellers or partners.

    Used for

    • UPI payments
    • Cards and netbanking
    • Subscriptions
    • Payment links
  • Cloud & DevOps

    Firebase

    Ready-made building blocks for mobile apps, such as push notifications, phone OTP login and crash reports, so you launch sooner.

    Used for

    • Push notifications
    • Phone OTP login
    • Crash reports
    • Real-time updates

Flutter and the related logo are trademarks of Google LLC. We are not endorsed by or affiliated with Google LLC.

Plain-English glossary

Grocery terms, in plain English

Dark store
A small warehouse laid out like a store but closed to walk-in shoppers, used only to pick online orders. It is quicker to pick from, but it adds rent and stock, so many grocers start by picking from the store.
Variable-weight barcode
A barcode printed by the weighing scale that carries the item and its actual weight or price. Scanning it at picking or billing charges the exact amount for loose produce.
Substitution
Replacing an out-of-stock item with a similar one the customer has approved. Handled in the app, it avoids short deliveries without surprising anyone at the door.
Safety buffer
Units held back from online sale so the app never promises the last few items on the shelf. It absorbs the gap between system stock and reality, which cuts items missing at picking.
ONDC
The Open Network for Digital Commerce, a government-backed network that lets your store be found through many buyer apps. You keep your own operations; orders arrive through a seller network participant.

Product preview

The apps your shoppers, pickers and store managers use

Illustrative screens from a store-connected grocery build.

  • Grocery and supermarket software customer app catalogue on a phone, showing fresh fruits and vegetables with prices
    Customer app. Shoppers add loose produce by approximate weight and see what is in stock at their nearest store, with their usual items one tap away.
  • Grocery and supermarket software picker app pick list on a phone, with 4 entries
    Picker app. Pickers work through a list sorted by aisle, scan each item, weigh loose produce and propose a substitute for anything missing.
  • Grocery and supermarket software store manager app order list on a tablet, with 4 orders and their status
    Store manager app. Store managers see every online order by slot and status, and move pickers to where the queue is building before deliveries run late.
  • Grocery and supermarket software admin dashboard in a web browser, with key figures and a chart
    Admin dashboard. Head office compares orders, substitution rates and on-time delivery across stores, which shows where stock accuracy or picking needs attention.
Illustrative preview

Sample screens: names, prices and figures are examples, not client data.

Work

Hyperlocal grocery sample project

  • Delivery app development

    Illustrative sample

    Hyperlocal grocery delivery platform

    An illustrative platform for neighbourhood grocery stores: slot or express delivery, store picking, batched delivery runs, and payment by UPI or cash on delivery.

    • Retail
    • Mobile + web platform

    Runs on

    • Android
    • iOS
    • Cross-platform
    • Admin

    Built with

    • Flutter
    • NestJS
    • PostgreSQL
    • Redis
    • AWS
    • +1 more

Cost drivers

Grocery software cost drivers

  1. Fulfilment model

    Store picking, dark stores and quick delivery each need different stock and picker logic.

  2. POS integration

    Reliable stock from your existing POS is the most important, and most variable, integration.

  3. Catalogue scale

    Thousands of SKUs with images, weights and GST rates need good import and clean-up tools.

  4. Delivery operations

    Your own riders need a delivery app and dispatch; third-party partners need integration.

Estimates are written from your scope, with the effort and assumptions behind each line item.

How pricing works

Services

Services for this industry

The design and engineering services our in-house team combines on projects in this sector.

  • Mobile app development

    Native and cross-platform Android and iOS apps, from first release through regular store updates, built by our in-house designers and engineers.

  • E-commerce development

    Online stores, shopping apps and B2B ordering portals on Shopify, WooCommerce or custom stacks, wired to Indian payments, couriers and GST invoicing.

  • Flutter development

    Android and iOS apps from one Dart codebase, built by engineers who know when Flutter is the right call and when native code is needed.

  • Custom software development

    Software shaped around how your business runs, from approvals and inventory to billing and reports, replacing spreadsheets and disconnected tools.

  • Admin panel development

    Back-office dashboards built around your team's daily tasks: order queues, approvals, catalogue management, payouts, reports and audit logs.

  • API development

    Secure, documented REST and GraphQL APIs, plus integrations that connect your apps to payment, logistics, GST, messaging and business systems.

FAQ

Frequently asked questions

How do you handle items sold by weight?

Loose items are listed with an approximate weight or pack size, and the customer is charged an estimate at checkout. At picking, the scale prints a variable-weight barcode or the picker enters the actual weight, and the final bill adjusts. For prepaid orders the difference is refunded or collected, and we design the flow so customers see the change clearly before delivery.

Can we fulfil online orders from our existing supermarket?

Yes, and many grocers start that way. Online stock is drawn from the store's POS inventory with a safety buffer, pickers use an app to collect items during quieter hours or across the day, and orders are staged for dispatch. As volumes grow, some businesses move fast-selling items to a dedicated picking area or a dark store, and the software can support both setups.

Should we offer quick delivery or scheduled slots?

It depends on your stock depth, delivery radius and order density. Quick delivery needs a compact catalogue, dense demand and dedicated pickers and riders, which raises operating cost. Scheduled slots let you batch orders by area and pick from a full supermarket range. Many grocers offer both: express delivery for a limited range nearby, and slots for larger weekly baskets.

Will the grocery app work well on low-end phones?

We treat that as a requirement. We keep the app small, compress product images, cache the catalogue for repeat visits and design checkout to recover from dropped connections. Search tolerates spelling variations and local names, so dhaniya finds coriander. Before release we test on older, budget Android devices on slow networks, because that's what many of your customers will use.

How does ONDC fit into a grocery business?

ONDC lets your store be discovered through buyer apps on the network while you keep your own operations. To join, you work through a seller network participant or become one, and your catalogue, stock and order status must flow to and from the network. We can build that connection into your grocery backend so ONDC orders are picked and delivered alongside orders from your own app.

Next step

Bringing your grocery store online?

Tell us how many stores, SKUs and daily orders you expect. We'll propose a phased build and fulfilment setup.

Or reach us directly

Mon–Sat, 10:00–19:00 IST