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Web Apps · Portals · Business Software

Custom Software & Web Application Development Company in Chennai

Quick answer: Custom software development is building an application around how your business actually works — instead of bending your process to off-the-shelf tools. Adszoo designs and builds web applications, portals, billing and inventory systems, dashboards and SaaS products for Indian SMEs, with a one-time build fee and an optional support retainer.

Get a free audit / consultationChat on WhatsAppCall +91 63690 50929

Why it matters

We don't just talk about software — we ship and run it. Our in-house products include Unizo (offline GST billing & inventory used by a construction material dealer), PropertyGenie (an AI-powered listing SaaS for real estate brokers), Smart Queue (a real-time restaurant waitlist with TV display) and a GPS-enabled civic grievance portal for an MLA constituency office. If you have a process running on Excel, WhatsApp and paper, we can turn it into software your team will actually use.

Who this is for

  • ✓ Traders, distributors & retailers
  • ✓ Manufacturers needing order/stock/dispatch tracking
  • ✓ Restaurants, clinics & service businesses
  • ✓ Startups building a SaaS or MVP
  • ✓ Government & civic offices needing public portals

Signs you need custom software

  • ✕Your team re-types the same data into Excel, Tally and WhatsApp every day.
  • ✕Off-the-shelf software forces workarounds — or charges per user every month.
  • ✕Owners can't see sales, stock or collections without calling someone.
  • ✕Customers or vendors need a portal, but you're emailing spreadsheets.
  • ✕You have a product idea (SaaS/app) and need a team that can build and launch it.

How Adszoo does it

Discovery & workflow mapping

We sit with your team, map the real process and agree on a scope that solves the expensive problems first.

UX that staff learn in a day

Keyboard-first counters, mobile-first field apps, Tamil/English interfaces — designed for the actual users.

Modern, reliable stack

React, Next.js, Node.js, Supabase/Postgres, SQLite for offline-first apps, Electron for desktop — chosen for your use case, not our habit.

Offline, cloud or hybrid

Shops with unreliable internet get offline-first software with backups; multi-branch businesses get secure cloud apps.

Integrations

Payment gateways (Razorpay/Cashfree), WhatsApp, SMS, email, GST reports, Excel import/export, POS and APIs.

Launch, training & support

Data migration, staff training, documentation and a support retainer so your software keeps improving.

What you get

  • ✓Requirement document & clickable prototype
  • ✓Web application / admin dashboard
  • ✓Role-based logins & audit logs
  • ✓Reports & Excel/CSV exports
  • ✓Payment, WhatsApp & email integrations
  • ✓Desktop (Windows) or cloud deployment
  • ✓Automated backups & security hardening
  • ✓User training & SOP documentation
  • ✓Source code ownership options
  • ✓Annual maintenance (AMC) plans

Our process

  1. 1

    Free consultation

    Understand the problem and decide if custom software is worth it.

  2. 2

    Scope & prototype

    Fixed scope, timeline and clickable prototype before development.

  3. 3

    Build in sprints

    Weekly demos — you see progress, not just invoices.

  4. 4

    Launch & train

    Data migration, go-live and hands-on training.

  5. 5

    Support & improve

    AMC with bug fixes, updates and new features.

Proof: work we've shipped

Construction · Building Materials · Software

KVM Agencies

Bilingual SEO website, e-commerce and custom billing software for a construction material supplier

Read case study →

Government · Civic Tech

Pallavaram Constituency Grievance Portal

Bilingual civic grievance and complaint-tracking portal for a Tamil Nadu MLA's constituency office

Read case study →

Healthcare · Telehealth

PriVio Health

Telehealth platform for private, at-home piles consultation and treatment

Read case study →

Construction · E-Commerce

KVM CMart

E-commerce platform for a construction raw material supplier

Read case study →

Let's talk about your growth

Book a free 30-minute call. We'll review your current website, rankings or process and tell you honestly what will move the needle — even if it's not us.

Related services & products

Get a free strategy call

Share a few details — we reply within a few working hours, usually on WhatsApp.

WhatsApp usCall +91 63690 50929

We never share your details. No spam — one call or WhatsApp to understand your needs.

Frequently asked questions

How much does custom software development cost in India?

A focused business web application for an SME typically costs less than people expect when the scope is tight — the price depends on modules, users, integrations and whether you need offline or cloud deployment. We give a fixed quote after a free scoping call, plus an optional annual maintenance plan.

How long does it take to build custom software?

A first usable version (MVP) of a business application usually takes 4–10 weeks. Larger systems are released in phases so your team starts using the most valuable modules early.

Do I own the source code?

Yes, source code ownership is available. Many SMEs prefer a licence plus AMC because it costs less upfront and includes ongoing updates — we offer both models.

Can you build software that works without internet?

Yes. We build offline-first desktop applications with local databases and automatic backups — our Unizo billing software works 100% offline on a Windows PC.

Do you provide support after launch?

Yes. We provide training, documentation and annual maintenance plans covering bug fixes, updates, backups and small enhancements, with support over WhatsApp and phone from Chennai.

Learn more on our blog