Now onboarding the first 10 AC workshops in Chennai. Book a setup visit
Job cards, GST bills and dues in one app your front desk will use. Free for 14 days.
Built inside GM Car A/C Service, a working Chennai workshop
Built for car AC workshops. Also used by general car garages.
GST, handled
Your GST registration decides what you hand over. Pick yours and watch the same AC job turn into the right bill.
The document follows the GST treatment on your garage record. It is not a choice at the counter, so the same job cannot be billed two different ways.
How non-GST billing worksSame state: CGST and SGST, half the rate each. Other state: the full rate as IGST.
Tax invoice. CGST ₹205.20 and SGST ₹205.20. Total ₹2,690.
Sri Ram Auto Works
Ambattur, Chennai 600 058
GSTIN 33AAAAA0000A1Z9
Tax invoice
GM/2627/0142| Work | Qty | Price | Taxable |
|---|---|---|---|
| AC gas refill and leak test998714 · 18% | 1 | ₹1,450.00 | ₹1,450.00 |
| Cabin air filter8421 · 18% | 1 | ₹680.00 | ₹680.00 |
| Workshop consumables38200000 · 18% | 1 | ₹150.00 | ₹150.00 |
Sample document from invented records. The garage and the customer are not real.
One screen. Register the car, tick the catalogue work, check the document, issue and hand over.
Try the run
ONE JOB, CHECK-IN TO PAID
Every step writes to the same record. Pick one to see what the counter and the floor actually get.
CHECK-IN
Search the plate at the counter. Open a job card with the complaint and the odometer.
JOB CARD
Waiting, in bay, ready, delivered. One technician owns the job; technicians can take or release work from My Work.
ESTIMATE
Send an approval link. The customer approves or declines once, without signing in.
INVOICE
Your registration decides the paper: tax invoice, bill of supply or plain bill. CGST and SGST in your state, IGST outside it.
PAYMENT
Cash, UPI, card or bank, in full or in parts. The UPI QR asks for the balance due, not the bill total.
Each car gets one job card from check-in to delivery, with a status the whole desk can see.
Job cardsJob lines turn into the invoice. Nothing is re-typed at the counter.
GST invoicesPart payments and dues stay on the record, aged by days, ready to share on WhatsApp.
Payments and duesMy Work shows each technician their assigned jobs, front-desk actions and shift handovers.
My WorkParts are held against the job. Billing a part removes it from stock; low stock shows first.
Parts inventoryExport CSV, GSTR-1, HSN summary and the sales register whenever your accountant asks.
Reports and exportsDUES, PARTS AND THE DRAWER
Unpaid balances by age, parts held for jobs, and the cash drawer counted against the day. The figures below are samples.
DUES BY AGE · SAMPLE
₹96,950outstanding, sample
Part payments count. The WhatsApp message carries the balance and your UPI ID; the counter QR asks for the amount still due.
See payments and duesPARTS · SAMPLE
Receive a supplier bill, adjust a count, keep suppliers. Technicians never see purchase cost.
Explore parts inventoryDAY CLOSE · SAMPLE
Roles
Actual application screens from the development gallery. Garage names, people and figures are synthetic; these are not customer results. See every screen.
Pricing
Per garage. 14 days free, no card needed.
Free setup visitA free 30-day Garage Master setup visit at your workshop.
Book a setup visit₹499/ month
Billed monthly
₹1,299/ month
Billed monthly
Questions garage owners ask
No. Garage Master runs in a browser on the counter computer, a tablet or a phone. Share a bill as a link on WhatsApp, or print it on the printer you already have.
Each garage's records are isolated at database level. You can download everything you entered as files, and close the account, from inside the app.
Not yet. You need an internet connection today. Saving technician updates for when the signal returns is coming soon. Billing will still need a connection.
Not yet. The screens are in English today. Tamil and Hindi are coming soon.
No. A garage with no GSTIN issues a plain bill under a heading you choose. A composition dealer issues a bill of supply. Neither charges GST.
Your data stays. Pick a plan to keep billing.
Not yet. Running more than one branch from one account is coming soon.
UNDER THE SCREENS
A button can be hidden. A rule in the database cannot be skipped. The rules that protect your money and your customers sit where every screen has to pass them.
01 · YOUR GARAGE ONLY
Each row carries its garage. The database refuses a read or write from another garage, whatever the screen asks.
02 · SERVER-SIDE TOTALS
Tax and totals are worked out on the server. The database checks the total again, to the paisa, before a bill is issued.
03 · FINAL MONEY RECORDS
An issued invoice or an expense is cancelled with a reason; a payment is reversed. Credit notes and refunds keep the trail.
04 · YOUR EXPORT
The owner downloads a CSV for each kind of garage record, plus GSTR-1 files, an HSN summary and a sales register for the accountant.
Car AC or general car service: pick a pack at sign-up and edit every price. Your logo and name on every invoice and WhatsApp message.
A ready AC service list, gas priced per 100 g, compressor estimates approved by link.
Periodic services, brakes, batteries and washes, ready at sign-up.
Yearly care plans with renewal reminders.
For garages that service fleets on monthly statements.
Fourteen days free. No card needed. Your first bill can go out this afternoon.