STUDENT APPDemo01
Order from any canteen.
Choose canteen, browse menu, pay by UPI, track your order live, collect with a 4-digit OTP.
DESKTOP • STUDENTLAUNCH DEMO →
12 min saved per lunch · UPI native · OTP verified · live queue
Kitchen openCampus Edition · Live
Multi-tenant canteen management for colleges.
Give students fast, cashless ordering while admins get real-time orders, analytics, and per-college billing. One system for every campus counter.
Any canteen, one trayStudents move between active campus counters without changing accounts.
UPI to kitchen in secondsPayment confirmation and order state stay visible across every portal.
Live queue, no refreshKitchen tickets, pickup codes, and admin views update from one source.
Code pickupA short pickup code replaces paper tokens and counter shouting.
~0min
saved per lunch
~0ms
realtime sync
0%
Tray commission
Live order
Lunch order
Kitchen openPaneer RotiAdded ✓
Masala ChaiAdd
SamosaAdd
Added to tray
Paneer Roti · ₹80
01 / The system
Three portals,one source oftruth.
One database, three purpose-built views. What a student orders is what the kitchen prepares, which is what the admin monitors. No lag, no re-sync, no mystery. Open any portal below — fully live, no sign-up.
KITCHEN VIEWDemo02
Run the live queue.
New tickets land instantly, prep timers count down, OTP handover clears the order — no paper, no shouting.
TABLET • KITCHENLAUNCH DEMO →
ADMIN CONSOLEDemo03
See the whole operation.
Live orders, daily revenue, menu edits, staff access, full audit log — one screen, every metric.
DESKTOP • ADMINLAUNCH DEMO →
Trust & Security
Built for trust, backed by code.
Tray is designed as a secure, decentralized campus platform. You own your data, control your revenue flow, and run your operations with confidence.
02 / Campus Edition
One campus.
Many counters.
Every canteen on campus in one system. Students see everything. Staff see only their counter. Admins manage their canteen. No overlap, no confusion, no wrong orders.
Aditya Engineering College · active canteens
🍽️
ACTIVEMain Canteen
Ground floor · North block
🏠
ACTIVEHostel Mess
Residential block
🏛️
ACTIVENorth Block
Academic wing
🌙
LATE NIGHTNight Canteen
Open till 11 pm
system role access mapping
StudentAll active canteens
Browse every canteen on campus, order with UPI, track live prep status, and collect with a 4-digit OTP.
Kitchen staffAssigned canteen only
Manage the live preparation queue. See and process tickets for their counter only, eliminating confusion.
Canteen adminOne canteen — full control
Configure menus, adjust pricing, manage counter staff, and audit live daily sales for their specific outlet.
Campus adminWhole campus — analytics
Cross-canteen reporting, total revenue rollup, campus-wide staff permissions, and central performance metrics.
02b / Adaptivity
Dine in or takeaway
before you order.
Like a QSR handoff screen: choose how you eat, get an honest ETA, then pay. Tray adapts copy and pickup for counter vs table.
TAKEAWAY
🏃♂️Class Break Handoff
3 min ETA
Order placed from lecture hall. Your food is prepared and ready at the counter exactly as the bell rings.
Adaptability simulator
03/Realtime
Add a special.Watch it land everywhere.
The kitchen adds a dish — it appears on every student phone in under 300 ms. One source of truth, three portals, no refresh.
1
Kitchen update
New item or menu change saved
2
DB write
Single source of truth updates
3
Realtime fanout
WebSocket channel broadcasts
4
Every portal
Student + kitchen + admin live
From the kitchen
“We stopped shouting over the crowd. The board calls the order; they show a code. Lunch ends on time.”
04/How it works
Phone to plate,in eleven minutes.
01
Choose canteen
Browse active canteens on your campus.
SELECTING02
Browse menu
Live availability, prep times, veg/non-veg.
CART03
Pay by UPI
Single-use QR. Webhook confirms in seconds.
PAID04
Track live
Queued → preparing → ready in ~250 ms.
PREPARING05
Collect w/ OTP
Four-digit code at counter. Staff marks complete.
READY05 / Built with
A boring stack,
on purpose.
Everything runs on a free tier until you have real users. No exotic infra. No lock-in surprises.
Next.js 15
Framework · App Router
TypeScript
Language · strict mode
Tailwind v4
Styling · design tokens
Supabase
DB · Auth · Realtime
Postgres + RLS
Data · multi-tenant
Razorpay
Payments · UPI
Vercel Edge
Hosting · CDN
Supabase Realtime
Live · WebSocket
Coming SoonMaster Control Centre
Master Control Centre
Multi-Canteen Director Console
Ship it
Run lunch without the rush.
Three screens. Zero printed tokens. Every order tracked, every payment confirmed, every handover verified. Deploy on a free tier and go live today.