ERP App Development
ERP app development is the building of a custom mobile ERP that unifies a company's operations — inventory, HR, finance, sales and more — into connected modules, typically costing ₹2 lakh to ₹8 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 ERP apps from one Flutter codebase, with the backend and a web admin panel included, so businesses across India run everything from one system instead of a dozen disconnected tools.
Last updated: 2026-07-08 · Written by Amit Kumar (CEH, CRTA), Cyber Defence, Hisar
What an ERP app actually unifies
ERP stands for Enterprise Resource Planning — one system that ties together the parts of a business that usually live in separate tools and spreadsheets. Instead of stock in one file, staff attendance in another, invoices in a third and sales in a fourth, an ERP puts them in connected modules that share one database, so a sale automatically reduces inventory, updates finance and reflects in reports without anyone re-entering data. A mobile ERP puts that power on phones, so owners, managers and field staff act on live numbers wherever they are — approve a purchase, check stock, view today's collection, mark attendance. The value is the connection: when modules talk to each other, you get a single, current picture of the business and stop losing time and accuracy to manual re-entry between systems. That end-to-end flow, built to how your company actually operates, is what an ERP app delivers.
The modules I build and how they connect
I build ERPs module by module so you pay for what you need and add more later. Common modules: Inventory — stock levels, purchase orders, suppliers, low-stock alerts, and automatic deduction on sales. Sales & CRM — leads, quotations, orders, invoicing and customer records. Finance & Accounting — invoices, payments, expenses, ledgers and financial reports. HR & Payroll — employee records, attendance, leave, and payroll. Purchase — vendors, purchase orders and goods receipt. Reporting — live dashboards across every module. The point is integration: a confirmed sale reduces inventory, posts to finance, and updates the dashboard automatically. On mobile you get role-based apps for owners, managers and staff (Android + iOS from one Flutter codebase), and a web admin panel to configure modules, users, permissions and master data. I can also integrate with your existing accounting software, payment gateways or a Tally export, so the ERP fits into what you already run rather than forcing a rip-and-replace.
Technology, integrations and security
The apps are Flutter (Android + iOS from one codebase); the backend is Node.js with a MySQL or PostgreSQL database built to keep modules consistent, so shared data stays accurate across inventory, finance and sales. Role-based access controls exactly what each employee can see and do. I integrate with what you already use — accounting tools, payment gateways, GST invoicing, or data exports to Tally — so the ERP connects into your stack instead of replacing everything at once. Security is central and it's my core expertise as a CEH (Certified Ethical Hacker) and CRTA certified developer: an ERP holds your financials, employee data, supplier terms and full operational picture — the crown jewels of the business — so I encrypt everything, enforce strong authentication and granular permissions, log activity, lock down the admin panel and keep dependencies patched. A breach of an ERP exposes your whole company at once. Most developers building line-of-business apps underweight this. I build the security to match how sensitive an ERP truly is.
Why businesses across India choose Cyber Defence
I'm a named, certified developer you can verify, not a faceless agency or a freelancer who disappears mid-build — and an ERP is exactly the kind of project where that matters, because it touches everything. 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 fake reviews or invented client logos; I scope your ERP honestly, module by module, and warn you against building everything at once. Running lean, my prices undercut agencies while matching quality. You deal directly with the person coding it, so your workflows, approval chains and reports get built the way your business truly runs — not forced into generic ERP screens. And because securing sensitive, business-critical data is my core expertise, your financials and operations are genuinely protected. For any Indian company wanting an ERP that fits, with honesty and real accountability behind it, that combination is rare and valuable.
My phased process from scoping to rollout
An ERP is too big to build blindly, so I do it in phases. We start with a free call or WhatsApp chat mapping your operations and which modules hurt most today, and I give you an honest scope and a phased, fixed quote — usually starting with one or two core modules rather than all at once. After a partial advance, I map data flows and permissions for your approval before coding. I build the first modules, share installable test builds, and let your team use them on real data early so we correct the fit before moving on. We roll out module by module, so you get value quickly and spread cost sensibly. I test thoroughly, harden security, publish the apps and set up your admin panel with full ownership and no lock-in. A first phase typically takes 8–12 weeks; a fuller ERP grows from there.
Transparent pricing in Indian Rupees
Here's roughly what ERP app development costs with me, and it's genuinely phased. A core ERP — one or two key modules like inventory plus sales, with role-based mobile apps and an admin panel — runs ₹2 lakh–₹3.5 lakh. A standard multi-module ERP covering inventory, sales/CRM, finance and HR with dashboards and integrations lands ₹3.5 lakh–₹6 lakh. A full enterprise ERP with many modules, complex approval workflows, deep integrations (accounting, GST, payments), multi-location and heavy custom logic reaches ₹6 lakh–₹8 lakh. Every price covers Android and iOS from one Flutter codebase, the backend and admin panel. These are honest ranges; the final figure is fixed per phase once I understand your operations, and I explain what each rupee buys. I recommend starting with core modules and expanding — you get value sooner and spread the investment. Optional yearly maintenance is quoted separately.
Custom ERP vs off-the-shelf (SAP/Zoho/Tally)?
Be honest about your business before spending on an ERP. Off-the-shelf ERPs — Zoho, Tally, SAP, and similar — are proven, quick to start, and the right choice if your processes are standard and their modules fit; I'll tell you to use one rather than build. They cost recurring per-user fees, expect you to adapt to their way of working, and can be hard to bend to unusual workflows. A custom ERP costs more upfront and takes longer, but it fits your exact operations, integrates with the specific tools you already run, avoids growing per-user fees, and you own it outright. The deciding question is whether standard software fits your workflow or fights it. For a common, standard operation, buy off-the-shelf. For a business whose processes are its edge and don't fit generic screens, a custom ERP you own usually pays back. I'll give you the honest verdict for your case.
ERP App Development Pricing (India)
| ERP Scope | What You Get | Timeline | Price (INR) |
|---|---|---|---|
| Core ERP (1–2 modules) | e.g. inventory + sales, role-based mobile apps, admin panel | 8–12 weeks | ₹2 lakh–₹3.5 lakh |
| Standard multi-module ERP | Inventory, sales/CRM, finance, HR, dashboards, integrations | 4–6 months | ₹3.5 lakh–₹6 lakh |
| Full enterprise ERP | Many modules, approval workflows, deep integrations, multi-location | 6–9 months | ₹6 lakh–₹8 lakh |
| Backend + admin panel | Included in every build (integration/gateway fees separate) | With app | Included |
| Yearly maintenance (optional) | Updates, fixes, OS-version & integration support | Ongoing | From ₹60,000/yr |
Frequently Asked Questions
How much does ERP app development cost in India?
A custom ERP app in India typically costs ₹2 lakh–₹3.5 lakh for a core ERP with one or two modules like inventory and sales, ₹3.5 lakh–₹6 lakh for a multi-module ERP covering inventory, sales, finance and HR, and ₹6 lakh–₹8 lakh for a full enterprise ERP with deep integrations and workflows. Every price covers Android + iOS, the backend and an admin panel. You get a phased, fixed quote after a free scoping call.
How long does it take to build an ERP app?
Because ERPs are phased, a first phase of one or two core modules usually takes 8–12 weeks. A standard multi-module ERP covering inventory, sales, finance and HR takes 4–6 months across phases, and a full enterprise ERP with deep integrations can take 6–9 months. Building module by module means you get working value early instead of waiting for everything at once.
Should I build a custom ERP or use SAP/Zoho/Tally?
Use off-the-shelf ERP like Zoho or Tally if your processes are standard and their modules fit — I'll say so honestly. They cost recurring per-user fees and expect you to adapt to them. Build custom when your workflows are your edge and don't fit generic screens, you need specific integrations, or you want to own it with no growing per-user fees. The deciding question: does standard software fit your workflow or fight it?
Which modules can the ERP include?
Common modules are Inventory (stock, purchase orders, suppliers, low-stock alerts), Sales & CRM (leads, quotations, invoicing), Finance & Accounting (invoices, payments, ledgers, reports), HR & Payroll (employee records, attendance, leave, payroll), and Purchase. All share one database so a sale automatically updates inventory, finance and dashboards. I build the modules you need first and add more later, so you don't overbuild.
Can the ERP integrate with my existing accounting or Tally?
Yes. I integrate with tools you already run — accounting software, payment gateways, GST invoicing — and can set up data exports to or from Tally, so the ERP connects into your stack rather than forcing a full rip-and-replace. This lets you modernise gradually. The exact integration is scoped once I understand which systems you use and how data should flow between them.
Why should I build the ERP in phases instead of all at once?
An ERP touches your whole business, so building everything at once is expensive, slow and risky. Building phase by phase — starting with the one or two modules that hurt most — means you get working value in weeks, your team adapts gradually, we correct the fit before expanding, and you spread the investment. I recommend this honestly even though a single big build would invoice sooner, because phased rollouts succeed far more often.
Will the ERP work on both Android and iPhone?
Yes. I build with Flutter, so one codebase produces both Android and iOS apps that behave identically, and you don't pay twice. Owners on iPhones, managers and field staff on Android all use the same system with role-based access, and versions update together. The web admin panel works in any browser for back-office configuration and reporting.
Is my business and financial data secure in the ERP?
Yes — and an ERP holds your most sensitive data, so this is critical. As a CEH and CRTA certified developer, I encrypt everything, enforce strong authentication and granular per-role permissions, log activity, lock down the admin panel and keep dependencies patched. A breach of an ERP exposes your whole company at once, so I build the security to match how business-critical it is — something most line-of-business app developers underweight.
Do I own the ERP and its source code?
Yes, fully. Across every phase I hand over the complete source code, backend and admin panel, and publish under your own store accounts. There's no lock-in and no growing per-user licence — the ERP is yours to keep, run, extend or move to another developer later, and your business data stays on infrastructure you control. You own what you paid to build, not rent it from me.
Business ke liye custom ERP app banane mein kitna kharcha lagta hai? (Cost of a custom ERP app?)
Ek core ERP — ek-do modules jaise inventory aur sales, mobile apps aur admin panel ke saath — ₹2 lakh se shuru hota hai; inventory, sales, finance aur HR wala multi-module ERP ₹3.5–6 lakh. Isme Android + iOS dono, backend aur admin panel shaamil hai. Main phased tareeke se banata hoon taaki aapko jaldi value mile. Free baat ke liye WhatsApp 75175 72000 par message karein.
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