E-commerce App Development
E-commerce app development is the building of a mobile shopping app where customers browse products, add to cart, pay online and track orders — typically costing ₹1 lakh to ₹5 lakh in India. I'm Amit Kumar, founder of Cyber Defence and a CEH + CRTA certified developer based in Hisar, Haryana. I build secure Android and iOS shopping apps from one Flutter codebase, with a Razorpay or Stripe payment gateway, push notifications and a full admin panel included.
Last updated: 2026-07-08 · Written by Amit Kumar (CEH, CRTA), Cyber Defence, Hisar
What an e-commerce app gives your store
An e-commerce app is your shop in your customer's pocket. Unlike a mobile website, an installed app sits on the home screen, loads instantly, remembers the shopper, and — crucially — lets you send push notifications for offers, cart reminders and restock alerts that reach people directly instead of hoping they revisit your site. The core experience is simple and proven: browse a categorised catalogue, search and filter, view product details and photos, add to a cart or wishlist, apply coupons, pay securely, and track the order to the door. Behind that, you get a dashboard to manage products, prices, stock and orders. For a growing D2C brand, boutique or retailer, an app turns one-time buyers into repeat customers because you can reach them again for free. That repeat-purchase engine is the real reason to invest, not just having an app to match competitors.
What I build into every shopping app
Each build ships as a complete store, not a demo. The customer app runs on Android and iOS from one Flutter codebase: product catalogue with categories, search and filters, product pages with image galleries and variants (size, colour), cart and wishlist, coupon and discount handling, secure checkout, order history and live order status. Payments go through a real gateway — Razorpay, PhonePe, Cashfree or Stripe — supporting UPI, cards, net-banking and cash-on-delivery. Push notifications drive re-engagement: abandoned-cart nudges, sale alerts and delivery updates. On the business side you get a web admin panel to add and edit products, manage stock, view and update orders, run coupons and see basic sales reports. I can also wire in ratings, reviews and multiple delivery addresses. Together these make a store you can actually operate and grow, rather than a screen that only looks like a shop.
Technology, payments and how I keep it secure
The app is built in Flutter so Android and iOS come from one codebase, keeping cost down and both versions identical. The backend runs on Node.js or PHP with a MySQL or PostgreSQL database holding your products, orders and customers. Payments integrate with trusted Indian gateways — Razorpay, PhonePe, Cashfree — so money is handled by PCI-compliant providers, never stored raw by me. Push notifications run through Firebase. Security is where my CEH (Certified Ethical Hacker) and CRTA background is decisive: a shopping app holds customer addresses, phone numbers and payment sessions, so I enforce HTTPS everywhere, protect against injection and tampering, secure the checkout flow, lock the admin panel behind strong auth, and keep everything patched. A breached store leaks customer data and destroys trust overnight. I build so that doesn't happen — which for anything taking online payments is simply the price of doing it right.
Why brands across India choose Cyber Defence
I'm a named, certified developer you can verify, not a faceless agency or a marketplace seller who ghosts after the invoice. My CEH and CRTA credentials are real and checkable, my base is a real address at Red Square Market, Hisar, Haryana 125001, and my number answers. I don't post fake reviews or invented brand logos; I scope your store honestly and let the work speak. Running lean, my prices undercut big-city agencies while matching their quality. You deal directly with the person coding your app, so your catalogue rules, delivery logic and offers get built the way your business actually works — not misread through layers of account managers. And because payment security is my core expertise, your customers' checkout is genuinely protected, an edge most app shops can't honestly promise. For any Indian brand wanting fair pricing and real accountability on something handling money, that combination matters.
My process from catalogue to launch
We begin with a free call or WhatsApp chat about your products, how you take payments and how you deliver, and I give you an honest scope and fixed quote. After a partial advance, I map the shopping flow and screens for your approval before real coding. I build in stages and share installable test builds, so you place test orders on your own phone and feel the checkout early rather than at the end. We connect and test your live payment gateway in sandbox first, then go live once real transactions pass. I test on real Android and iOS devices, harden security and speed, then publish to the Play Store and App Store and set up your admin panel. You get full ownership — no lock-in. A standard shopping app typically takes 6–10 weeks depending on catalogue size and features.
Transparent pricing in Indian Rupees
Here's roughly what e-commerce app development costs with me. A starter shopping app — catalogue, cart, one payment gateway, basic admin and push — runs ₹1 lakh–₹1.6 lakh. A standard store app with product variants, coupons, wishlist, order tracking, reviews and a fuller admin dashboard lands ₹1.6 lakh–₹3 lakh. An advanced app with multiple sellers or vendors, loyalty points, subscriptions, or heavy custom logic reaches ₹3 lakh–₹5 lakh. Every price covers both Android and iOS from one Flutter codebase, the backend, payment integration and admin panel — not the app alone. These are honest ranges; the final figure is fixed once I understand your catalogue and features, and I explain what each rupee buys. Payment gateway fees are charged by the provider, not me. Optional yearly maintenance and store-account setup are quoted separately.
Shopping app vs Shopify/mobile website: which do you need?
Be honest about your stage before you build. If you're just starting and unsure of demand, a Shopify store or a responsive mobile website is cheaper, faster to launch and enough to validate sales — I'll tell you to start there rather than overspend. A native shopping app earns its cost once you have repeat customers and want to reach them directly: push notifications, one-tap reordering, saved details and faster loading turn casual buyers into loyal ones in a way a website can't match, because you're no longer competing for their attention every visit. Shopify's app add-ons rent you an app-like shell with monthly fees and limits; a custom app you own outright and control fully. Rule of thumb: prove the business on a website or Shopify first, then invest in a custom app once repeat orders make that direct customer channel worth owning.
E-commerce App Development Pricing (India)
| App Type | What You Get | Timeline | Price (INR) |
|---|---|---|---|
| Starter shopping app | Catalogue, cart, one payment gateway, push, basic admin | 6–7 weeks | ₹1 lakh–₹1.6 lakh |
| Standard store app | Variants, coupons, wishlist, order tracking, reviews, admin dashboard | 8–10 weeks | ₹1.6 lakh–₹3 lakh |
| Advanced / multi-vendor app | Multiple sellers, loyalty, subscriptions, custom logic | 12–16 weeks | ₹3 lakh–₹5 lakh |
| Payment gateway + admin panel | Included in every build (provider fees separate) | With app | Included |
| Yearly maintenance (optional) | Updates, fixes, OS-version & gateway support | Ongoing | From ₹25,000/yr |
Frequently Asked Questions
How much does e-commerce app development cost in India?
An e-commerce app in India typically costs ₹1 lakh–₹1.6 lakh for a starter shopping app, ₹1.6 lakh–₹3 lakh for a standard store with variants, coupons and order tracking, and ₹3 lakh–₹5 lakh for a multi-vendor or advanced app. Every price covers Android + iOS, the backend, payment gateway integration and an admin panel. You get a fixed quote after a free scoping call.
How long does it take to build an e-commerce app?
A starter shopping app usually takes 6–7 weeks. A standard store with variants, coupons, reviews and order tracking takes 8–10 weeks, and a multi-vendor or advanced app can take 12–16 weeks. I share installable test builds so you place test orders as it's built. Timelines depend on catalogue size and how quickly you provide product data and approvals.
Do I need a shopping app or is Shopify / a mobile website enough?
If you're validating demand, start with Shopify or a responsive mobile website — cheaper and faster, and I'll say so honestly. Build a custom app once you have repeat customers: push notifications, saved details and one-tap reordering turn them into loyal buyers a website can't reach as easily. Prove the business first, then invest in an app you fully own.
Which payment gateways can you integrate?
I integrate trusted Indian gateways — Razorpay, PhonePe, Cashfree — and international ones like Stripe or PayPal, supporting UPI, cards, net-banking, wallets and cash-on-delivery. Payments are handled by the PCI-compliant provider, so sensitive card data is never stored raw. Gateway transaction fees are charged by the provider, not me. I'll recommend the best fit for your product type and average order value.
Will the shopping app work on both Android and iPhone?
Yes. I build with Flutter, so one codebase produces both an Android app and an iOS app that behave identically, and you don't pay twice. Both update together. If you want to launch on Android first to test the market and add iOS later, I can do that without rewriting the core app.
Can I manage products, prices and orders myself?
Yes. Every store I build includes a web admin panel where you add and edit products, set prices and variants, manage stock, view and update orders, run coupons and see sales reports — all without touching code. The admin panel is part of the quoted price. It's what lets you run the shop day to day instead of calling a developer for every change.
Can customers get notifications about offers and their orders?
Yes. Push notifications are built into every shopping app I make. You can send sale alerts, new-arrival and restock notifications, abandoned-cart reminders, and automatic order-status updates from placed to delivered. This direct channel is a big reason apps outperform websites for repeat sales — you reach customers on their home screen instead of hoping they return to your site.
Is customer and payment data secure in the app?
Yes — security is my core expertise as a CEH and CRTA certified developer. I enforce HTTPS, protect against injection and tampering, secure the checkout flow, lock down the admin panel and keep everything patched. Card payments run through PCI-compliant gateways, so raw card data is never stored by me. For any app taking online payments, this level of security is essential, not optional.
Do I own the app and its source code?
Yes, fully. On launch I hand over the complete source code, backend, payment integration and admin panel, and publish under your own Play Store and App Store accounts. There's no lock-in — the store is yours to keep, move or extend with any developer later. You own what you paid to build; you don't rent it from me.
Shopping app banane mein kitna kharcha aur time lagta hai? (Cost and time?)
Ek starter shopping app ₹1 lakh se shuru hoti hai aur 6–7 hafte leti hai; variants, coupons aur order tracking wali standard app ₹1.6–3 lakh aur 8–10 hafte. Isme Android + iOS dono, payment gateway (Razorpay/PhonePe), push notifications aur admin panel shaamil hai. Pura source code aapka. Free baat ke liye WhatsApp 75175 72000 par message karein.
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