Measurement sheets on paper, so the RA bill to your client goes out weeks late.
Measurement book to RA bill
Length, breadth, depth and nos on site, against the BOQ. The client's bill takes what was measured since the last one, with GST.
Measurement sheets to the RA bill for your client, labour contractor bills with retention and advances, muster roll and labour payments, GST on every bill, and a Tally export for your CA.
DPRs and photos from every site the same evening, each contractor's bill checked against measured work, and budget against actual for every project. No registers, no chasing updates.
How it works
What the supervisor does on the phone, and what the owner sees that evening. No register to collect, no one to call.

Morning
The supervisor picks the site and marks each worker present, half day or absent. One tap marks the whole gang.

Midday
Measured work goes in against the work order or BOQ item, with the date and the period it covers. Nothing to copy into a sheet later.

Evening
Weather, crew on site and what got done, with the day's photos, saved as the DPR before the supervisor leaves.

7 pm
The owner opens the DPRs for all projects and sees what each site did today, without a single phone call.
Swipe for the rest of the day
"My site people won't use an app." The screens are short forms with big buttons, Mezura OS runs on the phone they already carry, and Staff never see a rupee figure.
Real screens from our demo company, Ambit Infrastructure. Try it as the site engineer, no sign-up needed.
30-second tour
BOQ, measurement book, RA bill and forecast margin, in the real app on our demo project. Sound on.
Why Mezura OS
Enter a quantity once. It goes from the measurement book to your client's bill, your labour contractor's bill and your margin.
Sites report in by themselves, contractor bills are checked against measured work, and spend is tracked against budget.
Measurement sheets on paper, so the RA bill to your client goes out weeks late.
Length, breadth, depth and nos on site, against the BOQ. The client's bill takes what was measured since the last one, with GST.
Labour contractor bills, advances and retention worked out again in Excel.
A work order for each labour or petty contractor, and bills from their measured work, with retention, advance recovery, TDS and GST.
Labour paid from a register that nobody can check later.
Attendance marked on site, wages worked out from it, advances recovered, and every payment on record.
You find out what happened on site by calling the supervisor.
Crew on site, work done and photos from each project, on your phone the same evening.
Contractor bills paid on their word, checked against nothing.
Each contractor's RA bill comes from the measurement book, with retention and advances held back, and goes through your approval limits.
Overruns found when the project closes, not while it runs.
Committed and spent against budget for every project, with a warning when cost runs ahead of billing.
Features
Seven parts that share the same records, so a number entered in one shows up in the others.
Your starting point
Why it matters: quantities are entered once and can be traced from the bill back to the site.

Your commercial workflow
Why it matters: fewer repeated calculations, and every bill’s status in one list.

BOQ item
RCC M30 in columns and slabs
1,200 m³ at ₹7,500 = ₹90,00,000
Measured this month
160 m³
640 m³ to date, 480 m³ billed before
Bill to the client
₹12,00,000
160 m³ × ₹7,500, + ₹2,16,000 GST at 18%
Deductions
− ₹84,000
Retention 5% ₹60,000 · TDS 2% ₹24,000
Receivable
₹13,32,000
Part paid: ₹8,00,000 in, ₹5,32,000 outstanding
Margin on this work
₹2,24,000 · 18.7%
Against ₹9,76,000 subcontract cost (160 m³ × ₹6,100)
Sample project, illustrative figures. Rates, retention and TDS are set per contract in Mezura OS.
The differentiator
Why it matters: you see a job going wrong while there is still time to act, not after it closes.

Purchases and commitments
Why it matters: you know what is on order, what has arrived and what you owe suppliers.

Off the notebook and onto the phone
Why it matters: what happens on site reaches the office the same day, not at the month-end meeting.

Where each project stands
Why it matters: you see which site is slipping, and why, while there is still time to catch up.

Your people, and what each one sees
Why it matters: owners see everything without every detail reaching every user.

Customers
Pricing
Every user is included on every paid plan, and Free covers three. Archived projects are free.
Swipe to compare plans
Getting started: send us your BOQs and lists in Excel and we import them, run one project for a billing cycle, and we train your office and site teams. Setup is free on yearly plans.
Trust
FAQ
Anything else, ask us on a call.
The trial includes every feature, whichever plan you pick. After it, pay for the plan you chose, or carry on with Free, which covers one project and three users. You are never charged automatically, and nothing is deleted either way.
Today's prices are for the first 25 companies to pay, on any plan. That is 25 places in total, shared by every plan, not 25 per plan, and the count on the pricing cards is live. Once they are taken, new companies pay the later price shown on each card. You keep the founding price for as long as you renew without a break.
Every project that isn't archived, including ones on hold or completed. Archive a finished job to free its slot; you can bring it back whenever a slot is free.
You choose a plan in the app and get a GST tax invoice straight away. Pay by UPI or bank transfer and the plan switches on when we confirm it. Yearly plans renew yearly at the same price, monthly ones monthly. Founding member prices stay as long as you renew without a break.
Email info@mezuraos.in or message us on WhatsApp, and a person replies within one working day, Monday to Saturday, 10:00 to 19:00 IST. Step-by-step guides are in the help centre, and we move your existing Excel data in with you at the start.
No. Your ledgers, GST returns and books stay in Tally. Mezura OS keeps the project side, measurements, RA bills, labour bills and payments, and exports your client bills, contractor bills and payments to Tally as vouchers for your accountant.
No. Mezura OS runs in the browser on phones, tablets and computers, so site teams use the phone they already have.
Start free for 30 days, or book a walkthrough at a time that suits you.
Rather type than talk? Message us on WhatsApp.
Built by Mohd Zafar Kadri, who spent nearly three years running project execution at a Mumbai construction firm.