
The whole day, on one screen.
- Every doctor's live queue, with who's next
- Add a walk-in with a name and a number
- Mark a patient urgent and they go first
- Find anyone by name or booking code
- A notification when the queue changes
Zevi, by Opsyfy
Zevi is the appointment and queue system built for Indian clinics. Patients book from your clinic's link and hear from you on WhatsApp. Reception runs the whole day's queue from one Android phone. The doctor calls the next patient with one tap.


Why we built Zevi
Nobody can tell patients when they'll be seen, so they come early and wait. The room fills up, tempers rise, and reception spends the morning answering the same question.
A walk-in at 10:05 pushes back the patient who booked 10:00. Patients learn that a booked slot means nothing, so they stop booking.
Between patients, someone is calling a name down the corridor, or waiting for a patient who stepped out. Minutes lost, many times a day.
How it works
A single doctor's morning, from the patient booking the night before to the doctor being called away. Every step is something Zevi does today.
Ramesh opens the clinic's booking link, picks Dr. Iyer and 10:20 tomorrow, and books for his mother from his own WhatsApp number. The confirmation arrives on WhatsApp.
Today's bookings are already in the queue, in order. Nothing to copy from a register.
Name and WhatsApp number. Zevi puts her on Standby, so she fills the next open gap instead of pushing back people who booked. A daily walk-in limit keeps booked slots safe.
Ramesh is told the turn is near and replies that they're ten minutes late. Reception sees the answer next to the name.
Zevi decides who goes in: urgent cases first, then the patient whose slot it is, then someone from Standby to fill a gap. Nobody has to argue about it.
The screen shows whether the “your turn” alert reached the patient's phone. If it didn't, it says so plainly: call the name.
The patient moves to Standby and gets another chance, and the next person goes in. Miss the turn twice and they're off the day's list. The doctor isn't left waiting.
The doctor is called away. The rest of the shift is cancelled in one step, and every patient booked in it gets a WhatsApp message, instead of a waiting room full of people finding out at 3 PM.
One app, three jobs
The front desk, the doctor and the clinic owner each get their own view in the same Android app. Everyone sees the same queue, live.



For patients
Every clinic gets its own booking link. Share it on WhatsApp, print it at the desk, put it on Google Maps.
Made for India
Not a hospital system cut down to size. Zevi starts from the small and mid-sized OPD: one desk, a few doctors, a lot of walk-ins.
They're part of the day, not an exception. Standby and a daily walk-in limit let them in without breaking the booked queue.
Morning and evening shifts run as separate queues, so the evening never inherits the morning's mess.
Runs on any Android 10 or newer phone or tablet. No computer, no hardware, no token machine.
The staff app and the booking page both work in English, Hindi and Marathi.
Patients already use it. Confirmations, changes and turn alerts reach them where they already are.
Encrypted in transit, a PIN or fingerprint on every staff phone, never sold and never used for ads.
About Opsyfy
Opsyfy is an Indian software company. Our first product is Zevi, because the queue is where every clinic struggles in the same way, every single day.
We build alongside the clinics that use Zevi. We sit at their front desks, watch a real OPD, and fix what we see. That's why Zevi has Standby, a walk-in limit and the “call the name” warning: each one came from a real morning at a real clinic.
Founder & CEO
Leads product and the company. Spends his time between the code and the clinics that use it.
LinkedIn ↗CMO, Clinic Partnerships & Sales
Works with clinic owners and doctors from the first conversation to the day their OPD goes live.
LinkedIn ↗Technical Advisor
Shapes the architecture behind Zevi, so the queue stays fast and reliable as more clinics join.
LinkedIn ↗Get started
Tell us how your OPD runs today. It takes about three minutes.
Rather talk first? Message us on WhatsApp or email sales@opsyfy.in.
Questions
No. Patients book from your clinic's link in any phone browser and get their messages on WhatsApp. Only your staff use the Zevi app.
Any Android phone or tablet running Android 10 or newer, and an internet connection. No computer, printer or token machine.
Yes, that's what it's built for. Walk-ins go on Standby and fill gaps between booked patients. You choose how many walk-ins a shift can take, so booked patients keep their slots.
Outpatient clinics with one or more doctors: general physicians, paediatrics, dental, dermatology, eye, ENT and multi-speciality OPDs. If patients wait to see a doctor, Zevi helps.
It depends on how many doctors you have and whether you want every patient message on WhatsApp. We share clear pricing on the first call, before you commit to anything.
Data is encrypted in transit, staff phones are locked with a PIN or fingerprint, and only your clinic's staff can see your clinic's data. We never sell it or use it for ads. Read our privacy policy.
Yes. Write to us and we'll delete your clinic's data within 28 days. See how to delete your data.