App development company in Kolkata
We build web apps and mobile apps that replace the spreadsheets and chat threads a growing business runs on: orders, bookings, members, payments and a dashboard for the owner. One Kolkata company, built in small phases, with a fixed price in writing before we start.
Written by Atif Adnan. Last updated 2026-10-30.
Who we build apps for
Businesses that track orders, patients, students, members or leads in WhatsApp and Excel and have started to lose things; owners who want staff accountability and a daily view of the business; and companies that want a customer app or a member portal under their own brand. If a task is repeated every day by hand and goes wrong when one person is away, it is usually a good candidate for an app.
What we build
- Web apps: dashboards, order and booking systems, member areas, admin consoles and internal tools that run in a browser on any phone or computer
- Installable web apps: a web app that sits on the phone home screen like an app, with no app store needed
- Android and iOS apps: when you need the phone itself, for example for voice, notifications or the camera
- Payments and subscriptions: one-time and recurring payments, receipts and member login
- Alerts and integrations: Telegram, email and WhatsApp messages when something needs attention, and links to your website and your WhatsApp set-up
Web app, installable web app or native app: which one do you need?
This is the first decision, and it changes the cost. A web app is the quickest and most affordable way to put a process online and works on every device. An installable web app adds a home-screen icon. A native Android or iOS app is worth it when the app depends on the phone itself, or when your customers expect to find you in an app store.
We tell you which fits your case before any code is written, and we do not recommend the heaviest option when a lighter one will do. A common route is to begin with a web app and add a native app later, once they know which screens people use.
What decides the cost of an app
Two apps that look alike on the surface can differ a lot in price, because the cost follows the work underneath. When you compare quotes from any app development company in Kolkata, check that each one covers the same list:
- Who uses it and with what rights. Staff, managers, customers and partners each see different things, and each role has to be built and tested.
- Screens and workflows. The number of screens and how many steps each process has.
- Platforms. One web app, or also Android, or also iOS.
- Payments. One-time payments are simpler than subscriptions, refunds and receipts.
- Connections. WhatsApp, SMS, email, accounting or an existing system each need set-up and testing.
- Data you already have. Moving data out of spreadsheets takes planning and clean-up.
- Languages. A second language means translated screens, and Arabic or Urdu need a right-to-left layout.
Built in small phases, so you see value early
We do not ask you to wait for a big launch. The first phase is a small, useful version that your team can use within weeks. You use it, we fix what is awkward, and then we add modules, integrations and reports as you need them. Each phase has its own fixed price in writing, so you control the spend and can stop or change direction after any phase.
Plain-language scoping, owner-friendly apps
Before any code, we sit with you and draw how the work flows today and where it breaks. The result is a short scope in plain language, not a technical document you cannot judge. The finished app has simple, mobile-first screens with help text in the admin, so that a non-technical owner can run it. Your data stays yours and can be exported at any time.
How to choose an app development company in Kolkata
Whoever you pick, ask these questions first:
- Can I see apps you built that are live and in real use?
- Will I get scope, timeline and price in writing before work starts?
- Who owns the code, the data and the accounts after launch?
- How is the first phase scoped, and can I stop after it?
- What happens when something breaks a month after launch, and who answers?
- Who will I actually speak to, and how fast do they reply?
Registered office in Kolkata, clients everywhere
Registered office: 147 Chittaranjan Avenue, Kolkata 700007. You can call or message us on WhatsApp and we reply the same working day. We work with businesses across India, the Gulf and the UK, so the process runs by call, WhatsApp and shared documents. Looking at the full set of services? See the Web and Mobile Apps page, or all six digital services.
How it works
From brief to delivery
Map the workflow
We sit with you and draw how work flows today and where it breaks.
Phase one
A small, useful first version you can use within weeks, with a fixed price in writing.
Use it and refine
Your team uses it, and we fix what is awkward.
Grow it
Add modules, integrations and reports as you need them.
Our work
Apps and platforms we have built
AssistMe
Send a voice note. AssistMe logs the payment, sets the reminder and summarises your business.
See the project WhatsApp marketing platformRIOS
A WhatsApp marketing platform that sends campaigns, answers with AI, and shows who clicked, replied and bought.
See the project Subscriptions, members and paymentsAI Masterclass
A paid learning community with online subscriptions, member login, referrals, scholarships and an admin console.
See the projectPublished projects only. See all our work
Questions about app development in Kolkata
How much does it cost to build an app in Kolkata?
It depends on who uses the app, how many screens and workflows it has, whether you need Android, iOS or only the web, payments, and what it connects to. We do not publish a price list. After a free 20-minute call you get a fixed price in writing, with scope and timeline, before any work starts, and we build in phases so you control the spend.
Do I need a mobile app, or is a web app enough?
For many businesses a web app that works well on a phone is enough, and it costs less and is quicker to launch. A native Android or iOS app makes sense when you need features that depend on the phone itself or when customers expect to find you in an app store. We tell you which fits before we start.
Do I need to be in Kolkata to work with you?
No. Most of the work happens by call, WhatsApp and shared documents, so clients work with us from across India, the Gulf and the UK. Our registered office is at 147 Chittaranjan Avenue, Kolkata.
Who owns the app and the data?
You do. Your data stays yours and can be exported at any time.
Can you build the app together with a website and WhatsApp?
Yes. We also build websites and WhatsApp marketing, so the app, the website and the WhatsApp channel can be connected: a booking or order on the website can reach the app, and the app can send alerts to WhatsApp, email or Telegram.
Have you built apps before?
Yes. Our published projects include AssistMe, a voice-first business assistant available as an Android app and as a chat, RIOS, a WhatsApp marketing web app for teams, and AI Masterclass, a members and subscriptions platform. You can read about each in our work section.
Free Business Audit
Tell us where you are
Takes one minute. We reply the same working day, usually within hours.
- A plain-language review of your website, search presence and WhatsApp set-up
- The one or two things to fix first
- A fixed-price plan if you want our help, no pressure if you do not
Prefer to talk? Chat on WhatsApp or book a free call.