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MOBILE APP DEVELOPMENT

Mobile App Development Company in Kolkata

Android and iOS apps for Kolkata wholesalers, hospitals, schools and coaching institutes, jewellers, retailers and startups, in Bengali, Hindi and English.

Kolkata, West Bengal, India

Mobile App Development Company in Kolkata

What we do for businesses in Kolkata.

A retailer in Cooch Behar orders stock from a Burrabazar wholesaler after shutting his shop for the night. A patient in Agartala books a follow-up with a Kolkata cardiologist. A parent in Howrah checks a child's test score. A woman in Jadavpur pays this month's instalment into her jeweller's scheme. Each of these used to require a journey, a telephone call or a queue. A well-made app turns it into a minute on a phone.

Quavento Technologies builds mobile apps for Kolkata organisations. We create ordering apps for wholesalers and distributors, patient apps for hospitals, student and parent apps for schools and coaching institutes, scheme and loyalty apps for jewellers and retailers, shopping apps for consumer brands and first versions for startups. We build for Android and iOS, with Bengali, Hindi and English interfaces and the ability to work offline.

We work from Pune and collaborate remotely, visiting Kolkata for workshops and user testing when it will improve the product.

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What we deliver

Mobile App Development for Kolkata.

Android and iOS

One codebase for both where it suits.

Bengali, Hindi and English

Users choose their language.

Offline capable

Works in district towns and crowded markets.

Payments built in

UPI, cards and international payments.

Simple by design

Usable by every age and skill level.

Launch and upkeep

Store submission and maintenance handled.

Guide

What you should know in Kolkata.

Which Kolkata organisations should build an app?

Those with people who come back to them regularly. A wholesaler with hundreds of retailers, a hospital with patients on long treatment, a school with parents, a jeweller with scheme members, a sweet shop with loyal customers.

For them, an app turns repeated calls and visits into a few taps and gives the organisation an orderly record.

Where people interact rarely, a good mobile website is cheaper and reaches everyone. We will tell you which you need.

A useful test is to ask how often a typical user would open the app in a month. A retailer who orders every week, a parent who checks homework daily and a scheme member who pays monthly all pass that test. A customer who buys furniture once in five years does not.

How do you design for such a wide audience?

Users range from young professionals in New Town to shopkeepers in district towns and elderly parents in North Kolkata. An app must be clear to all.

We offer Bengali and Hindi alongside English, use large touch targets and familiar patterns and keep each task to a few steps. The app is kept small, since many phones are short of storage.

A prototype is tested with real users of different ages before development, and what we observe shapes the final design.

What do you build for wholesalers and distributors?

Retailers across Bengal, Bihar, Odisha and the north-east buy from Kolkata's markets. Travelling to place an order is costly and slow.

We build apps where a retailer sees stock, his own rates and his outstanding balance, places an order and receives dispatch details. Salespeople have an app for visits, orders and collections.

Because signal in smaller towns is uneven, orders can be prepared offline and sent when a connection returns.

Rates in many trades move daily, and disputes arise over what was quoted on the telephone. In the app, the rate shown at the moment of ordering is recorded against the order, which settles the matter and saves a good many awkward conversations.

What do you build for hospitals and clinics?

Patient apps for booking, queue status, reports, prescriptions, bills and video consultation. Doctors have a view of schedules and patient history.

For patients from other states and from Bangladesh, the app helps with pre-arrival registration, document checklists, accommodation guidance and follow-up consultations.

Family profiles let one person manage care for several relatives, and reminders help patients keep to their treatment.

For a family in Tripura or Bangladesh, the hardest part is not knowing what will happen on arrival. An app that shows the appointment, the documents to bring, where to stay nearby and the name of a coordinator who speaks Bengali removes much of that anxiety.

What do you build for schools and coaching institutes?

Parent apps with attendance, homework, test results, notices and fee payment. Student apps with recorded classes, notes, practice tests and performance analysis.

Teachers can post updates and mark attendance from their phones.

Parents who work long hours, or live outside the city, are kept informed without having to visit or telephone.

Many students travel long distances by local train to attend coaching. Recorded lectures and practice tests in the app let them make use of that time, and catch up on a class missed because of a cancelled train.

What do you build for jewellers and saree retailers?

Scheme members pay monthly instalments, track their balance and see maturity dates. New collections, the day's gold rate and appointment booking are included.

Saree and garment retailers can show new arrivals, especially before Puja and weddings, and offer video shopping.

Customers in other cities can shortlist with family and buy with the help of a familiar salesperson.

Before Dhanteras and the wedding months, scheme members begin to think about what they will buy. A preview of new designs in the app, with the option to reserve an appointment, turns that anticipation into a planned visit.

What do you build for sweet shops, restaurants and food brands?

Ordering apps with menus, delivery slots by area, pre-orders for festivals and loyalty rewards.

For sweet shops, pre-ordering for Puja, Bhai Phonta and weddings spares customers a queue and lets the shop plan production.

The business deals directly with its regulars and learns what they buy.

On the morning of Bhai Phonta or Bijoya, the queue outside a famous sweet shop can stretch down the lane. Customers who ordered and paid through the app the day before collect a packed box at a separate counter, and the shop serves far more people.

What do you build for tea and consumer brands?

Shopping apps with subscriptions, reordering, brewing guides and loyalty benefits suit brands whose customers buy repeatedly.

We advise honestly on whether an app is justified. For a brand with a modest base of customers, a fast website usually does more.

Where an app makes sense, it is connected to the online store, so that stock and orders are managed in one place.

A tea subscription works well in an app. The customer sets how much they drink, receives a fresh supply at that interval, can switch estates or blends to explore and pauses with a tap when travelling. The merchant, in turn, can plan purchases against known demand.

What do you build for startups?

Founders in education, health, logistics, finance and consumer services need to test an idea with real users before investing heavily.

We help define the smallest useful version, design it carefully, build it quickly and add analytics.

We suggest launching to a small group or one locality first, since early lessons are cheap to act on.

What do you build for field and delivery teams?

Sales staff, delivery crews and service engineers record visits, orders, deliveries and expenses on the move.

Location stamps and photographs provide verification, and the app works offline with later synchronisation.

Managers see progress without constant calls.

A distributor's delivery van covering shops from Barasat to Basirhat can follow a route planned in the app, record each drop with a photograph and collect payment against the correct invoice, so that the evening reconciliation takes minutes.

How do you handle Bengali and Hindi?

Text is written by native speakers in everyday language. Bengali in particular is written with care, because users here notice awkward phrasing.

Layouts allow for the different length and shape of each script.

Notifications follow the user's chosen language.

How do you handle payments?

We integrate UPI, cards and net banking through trusted gateways, with instant receipts and a history.

For users abroad, including families paying hospital bills or buying jewellery, international cards are supported.

Recurring payments, such as scheme instalments and school fees, follow current rules, with reminders before each debit.

How do you make apps work offline?

Signal is weak in crowded markets, in older buildings and in many district towns.

We store essential data on the device, let users complete their task and synchronise when a connection returns, with safeguards against loss or duplication.

During the monsoon, when networks falter, this matters in the city too.

What sits behind the app, and how is it secured?

A server side stores data, manages logins and applies your rules, with an admin panel for staff. It is connected to your billing, hospital or school system.

Data is encrypted, logins are secure and permissions are limited.

Health, financial and student information is handled with particular care.

How do you test and launch?

We test on a range of real phones, including budget models, on slow networks and with interruptions.

A small group of real users tries the app before release. We then handle submission to Google Play and the App Store.

Staff who introduce the app at the counter or front desk, with a simple poster and QR code, make the largest difference to adoption.

We test in the conditions users will actually face: on a crowded local train with a weak signal, inside an old building with thick walls and on a phone that is nearly out of storage. Problems that never appear in an office show themselves there.

How do you maintain and improve the app?

An app needs monitoring, fixes, updates for new operating systems and gradual improvement, covered by a maintenance plan.

We review ratings, comments and usage with you and agree what to change.

Before Puja and other peaks, we check capacity and avoid risky changes.

Committees, principals and owners change over the years. We document the system and provide an administrator's guide, so that whoever takes charge next can run it without depending on a predecessor's memory.

How long does it take, and what does it cost?

A focused first version usually takes three to five months.

Cost depends on features, platforms and integrations. We give a written estimate and explain hosting, store and maintenance costs in advance.

If you have a date to meet, such as the Puja season or an academic year, we plan around it.

What does a typical Kolkata app project look like?

Consider a hardware and electrical goods wholesaler supplying shops across North Bengal and Assam. Retailers telephone orders, rates are confirmed by voice and disputes about what was said are common.

We would build a retailer app in Hindi, Bengali and English showing stock, party-wise rates and outstanding balance, with offline ordering, and a salesperson app for visits and collections, linked to the billing system.

Orders would be accurate, retailers could order at any hour and the owner would see sales and dues by territory.

How do you work from Pune?

Workshops, reviews and demonstrations are held by video, and test builds are installed on your own phone.

We visit for user testing and training when it is valuable.

A named contact keeps you informed.

How do we begin?

Tell us who will use the app and what it should help them do. We will suggest a scope and provide an estimate.

A short design phase is often the best first step.

The first conversation is free.

How we work

How a project runs.

Typical stages. Exact timelines are confirmed in your written proposal.
  1. 01

    Discovery

    1 to 2 weeks

    Users, tasks and environment understood.

  2. 02

    Design

    2 to 4 weeks

    Screens and prototype created and tested.

  3. 03

    Development

    2 to 4 months

    App and backend built with regular test builds.

  4. 04

    Testing and launch

    2 to 3 weeks

    Device testing and store submission.

  5. 05

    Support

    Ongoing

    Maintenance and enhancement.

Pricing & engagement

How do pricing and engagement work?

App projects begin with discovery and design, followed by staged development and a maintenance plan. Store and hosting costs are explained beforehand. You own the code and data. Share your idea and we will respond within one working day.

FAQS

Mobile App Development Company in Kolkata: common questions

Three to five months for a first version.

It depends on features. We provide a written estimate.

Yes.

Yes, where needed.

No. We are based in Pune.

Yes.

Yes.

Yes.

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