Short answer: An e-commerce app lets customers browse your catalog, add to cart, pay online and track orders from their phone — with push notifications that bring them back to buy again. Cyber Defence, a Hisar-based company led by full-stack developer Amit Kumar (CEH, CRTA), builds Android, iOS and web e-commerce apps for businesses across India from ₹40,000, with flat pricing and full code ownership.
What is an e-commerce app and who needs it?
An e-commerce app is your store in your customer's pocket. Unlike a mobile website that a customer has to search for each time, an app sits on the home screen, loads instantly, remembers the cart, and can send push notifications about offers and order updates. For repeat-purchase businesses, an app dramatically lifts customer retention and average order value.
It suits retail brands and D2C sellers, grocery and kirana stores, restaurants and cloud kitchens, fashion and electronics sellers, pharmacies, and any business that wants direct sales without paying heavy marketplace commissions on every order. If you are tired of losing 20-30% margin to marketplaces, your own app is how you own the customer relationship.
Why an app beats relying only on marketplaces
- No per-order marketplace commission eating your margin.
- You own the customer data and can market to them directly.
- Push notifications bring customers back for free.
- Your brand, your rules, your checkout experience.
- Repeat buyers convert faster in an app than on any website.
Key modules and features
We build e-commerce apps module by module so you launch with what matters and add advanced features as you grow.
| Feature | What it does | Why it matters |
|---|---|---|
| Product catalog | Categories, variants, images, search & filters | Customers find products fast |
| Cart & checkout | Add to cart, saved cart, quick checkout | Fewer abandoned carts |
| Payments | UPI, cards, net banking, wallets, COD | Every customer can pay their way |
| Order management | Order placement, status, tracking, history | Fewer "where is my order" calls |
| Push notifications | Offers, abandoned-cart nudges, order updates | Free repeat sales |
| User accounts | Login, addresses, wishlists, reorder | Faster repeat purchases |
| Offers & coupons | Discounts, promo codes, loyalty points | Higher conversion |
| Admin panel | Manage products, orders, inventory, customers | Run the whole store yourself |
| Delivery & logistics | Shipping integration, delivery tracking | Smooth fulfilment |
| Analytics | Sales, top products, customer behaviour | Decide with data |
Push notifications are your cheapest sales channel
Once a customer installs your app, a push notification costs you nothing and lands directly on their phone. A well-timed "your cart is waiting" or "flat 15% today" push routinely recovers sales that a website would simply lose. We build notification tools into every app so you can market without paying for ads every time.
Android, iOS or both?
Most Indian businesses start with Android because that is where the majority of users are, then add iOS as they grow. We build cross-platform apps so a single codebase serves both Android and iOS, keeping your cost and maintenance lower, and we pair the app with a web store and an admin panel so you sell everywhere from one system.
Our development process
- Free discovery call: we learn your products, margins and target customers.
- Scope & flat quote: a written feature list with a fixed price.
- UI/UX design: app screens designed and approved before build.
- Sprint build: working builds you can test every 2 weeks.
- Payments & testing: gateway integration and thorough QA.
- Store launch & support: Play Store/App Store publishing and post-launch support.
Honest pricing
E-commerce app development ranges from ₹40,000 to ₹4,00,000 depending on scope. A focused single-platform app with catalog, cart, payments and order tracking sits at the lower end. A full marketplace-grade app with multiple vendors, loyalty, advanced analytics and both Android and iOS native builds sits at the higher end. Complex custom software and platforms start at ₹1,00,000+, scoped after a free call.
- Flat written price agreed before we start.
- 100% code ownership — no per-order or per-month platform rent.
- App-store SEO/ASO and security built in.
- EMI options available.
Custom app vs ready-made platforms
Hosted platforms and app builders charge a monthly fee plus a cut of your sales, cap your design, and keep your customer data on their servers. A custom app is a one-time build you own outright, designed to your brand, with no commission on any order.
| Factor | Ready-made platform | Custom (Cyber Defence) |
|---|---|---|
| Commission on orders | Often a % per order | None — you keep the margin |
| Recurring cost | Monthly rent + fees | One build + optional support |
| Design freedom | Template-limited | Fully your brand |
| Customer data | Platform owns it | You own it |
| Ownership | Vendor | You own the code |
How long does it take to build?
A focused single-platform e-commerce app with catalog, cart, payments and order tracking typically goes live in 6 to 10 weeks, while a full marketplace-grade app with multiple vendors, loyalty and native Android and iOS builds takes longer. We work in sprints and give you test builds every fortnight so you experience the app on a real phone early, and we handle Play Store and App Store publishing as part of the launch rather than leaving you to fight store approvals alone.
Return on investment for your store
Your own app repays its cost fastest for repeat-purchase businesses. Every order that would have gone through a marketplace saves you the 20 to 30 percent commission those platforms charge, so the app pays for itself after a few hundred orders. Push notifications turn one-time buyers into repeat customers at zero marketing cost, lifting lifetime value. Owning the customer data means you can run your own offers instead of renting audiences through ads. And a fast, branded checkout reduces cart abandonment compared with a slow mobile website.
- Keep the margin you currently pay marketplaces as commission.
- Drive free repeat sales through push notifications.
- Own your customer data and market to it directly.
- Lift conversion with a fast, branded app checkout.
Integrations we support
We connect the tools an online store depends on: payment gateways for UPI, cards, net banking and wallets, shipping and logistics partners for delivery tracking, SMS and WhatsApp for order updates, and your inventory or billing system so stock and accounts stay in sync. Because you own the code, adding a new payment provider, a new courier, or a loyalty programme later is straightforward and never blocked by a platform's limits.
Why choose Cyber Defence
We are a Hisar, Haryana app and web development company serving businesses across India remotely. Founder Amit Kumar is a full-stack developer and certified security professional (CEH, CRTA), so your payment flows and customer data are secure by design. We are ISO-certified and GeM-registered, which reassures serious buyers.
See our app development company in Hisar, web development in Hisar, software development company in Bangalore, and IT company in Delhi. Planning something bigger? Read our custom software development guide, and if you also need back-office systems see our inventory management software and billing software development posts. We also run technology courses.
FAQ
How much does e-commerce app development cost in India?
E-commerce app development at Cyber Defence ranges from ₹40,000 to ₹4,00,000 depending on scope. A single-platform app with catalog, cart, payments and tracking sits at the lower end; a multi-vendor marketplace with native Android and iOS costs more. You get a flat written quote first.
Do you build for both Android and iOS?
Yes. We build cross-platform apps from a single codebase that serves both Android and iOS, and we pair them with a web store and admin panel so you sell everywhere from one system.
Which payment methods can customers use?
We integrate UPI, cards, net banking, wallets and cash on delivery, so every customer can pay in the way they prefer, with secure gateway integration.
Can I send push notifications and offers?
Yes. Push notifications for offers, order updates and abandoned-cart nudges are built in, giving you a free channel to bring customers back and lift repeat sales.
Do I own the app and the customer data?
Yes. You get 100% code ownership and full control of your customer data, with no per-order commission and no monthly platform rent.
Do you work with businesses outside Haryana?
Yes. We are based in Hisar and build apps remotely for businesses across India, with Play Store/App Store publishing, training and ongoing support.
Ready to launch your own e-commerce app and stop paying marketplace commissions? Call Cyber Defence at +91-75175-72000 for a free discovery call and a flat, written quote.