A restaurant POS that installs like an app, with WhatsApp bills

A typical small restaurant in India runs on five disconnected tools: a billing machine at the counter, a separate tablet for Swiggy and another for Zomato, handwritten kitchen tickets, and a WhatsApp group for regulars. Each one works on its own, and none of them talk to each other.

In the lunch and dinner rush that breaks down in predictable ways. A delivery order is missed because the tablet was on silent. The kitchen cooks a dish twice because a paper ticket was copied. A guest asks for the bill on WhatsApp and the cashier types it out by hand. At closing, nobody knows the day's real takings until the cash, card, UPI and platform payouts are added up on paper.

The owners we spoke to did not want more software. They wanted fewer screens: one system that runs on the phones, tablets and PC they already own, that a new waiter can learn in an afternoon, and that does not need an IT person to install or update.

We designed RestroTech around the five people who touch an order, each with their own screen and their own permissions.

One platform brings every order into a single kitchen queue: counter and table orders on the POS, guests ordering from a QR code at the table, a self-order kiosk, the restaurant's own online ordering page, and Swiggy and Zomato orders, received through UrbanPiper or entered in seconds from the partner app.

The owner's dashboard opens on what matters during service: money taken today, orders and average bill, what is on the pass, and how full the floor is. Everything updates live, without refreshing the page.

Each order is split into tickets by kitchen station, so the beverage counter only sees drinks and the grill only sees grill items. Tickets move from New to Accepted, Cooking and Ready with one tap, and every screen in the restaurant, including the waiter's phone and the POS, sees the change instantly over Socket.IO.

The floor plan shows every table's state by colour (free, seated, reserved, cleaning) with how long guests have been seated, and reservations and the waitlist sit next to it so the host can seat walk-ins without double-booking a table.

Most of the engineering time went into a handful of problems that only show up in a real restaurant at peak hour.

At checkout the cashier types the guest's WhatsApp number and the bill goes out as a PDF from the restaurant's own number. The same number is remembered against the guest, so repeat visits, loyalty points and order history build up without a separate sign-up.

Reports cover daily sales, sales by item and category, popular and slow items, payment methods, discounts, peak hours, food cost and a GST summary. Any report can be printed, exported to Excel, PDF or CSV, or emailed to the owner on a schedule.

We chose a PWA instead of separate store apps. It installs from the browser onto a phone, tablet or counter PC, opens full screen like any app, and updates for every restaurant the moment we ship a change, with no app-store review in between.

One codebase serves the owner's dashboard, the waiter's phone, the kitchen screen, the kiosk and the guest's QR menu. On a phone the same screens switch to a bottom navigation bar and larger touch targets, so a waiter can run a table one-handed.

The trade-off is honest: RestroTech needs an internet connection to take orders. For a restaurant that is a smaller risk than it sounds, because a mobile hotspot keeps service running if the broadband drops.

RestroTech went live with its first restaurant, a sandwich restaurant in Surat, in October 2026. Orders from the counter, QR tables, the kiosk and delivery platforms now arrive in one kitchen queue, bills reach guests on WhatsApp, and the owner sees the day's takings and closes the day's cash from the dashboard.

Each role has a short captioned tutorial video, so new staff can learn the screens on their own. The interface works in English, Hindi, Gujarati, Marathi and Tamil, so each person can use it in the language they are most comfortable with.

We would design the kitchen and customer-facing screens for real counter conditions even earlier: glare, gloves, noise and one free hand. The fixes we made after watching real use, such as a faster takeaway flow and a clearer ready-order display for guests, mattered more than any new feature.

We would also bring the WhatsApp set-up into the first day of onboarding. Owners valued bills on WhatsApp more than almost anything else, and it is the feature that makes guests notice the change.