From the spec book to the bid.
Upload the documents. Chantro drafts the scope with the spec page where the documents give one, takes quantities off the drawings and prices them with your numbers.
The AI operating system for contractors
Chantro's AI reads your spec books and drawings and drafts the bid. Every project, crew and daily report lives in one place, and each clock-in becomes labor cost you can see.

01Today and with Chantro
You already know how to do each of these by hand. Here is what changes when the record is shared.
You check a draft instead of starting from a blank page.
Today: Read by hand with a highlighter, hoping nothing is missed
You see what each sub left out before you pick one.
Today: Retyped from emails and PDFs into a spreadsheet
The office reads each job's day and its risks in one digest.
Today: Written from memory at the end of a long day
Hours reach payroll without being typed twice.
Today: Paper sheets retyped in the office before payroll
You see a job going over budget before it is finished.
Today: Worked out near the end of the job, if there is time
02One system
Estimating, projects, field reports, time and people share one record, so far less gets typed twice.
Upload the documents. Chantro drafts the scope with the spec page where the documents give one, takes quantities off the drawings and prices them with your numbers.
Clock in on the phone or the web, switch projects with a tap, and keep the timesheet layout your crew already knows.
Type or talk. It answers from your own data and does the work, and the big things wait for your yes.
The day's tasks, crew and weather become a draft. The field lead confirms in one tap.
Pipeline, follow-ups and every call in one timeline. A won lead becomes a project.
Your people, their positions and what each one can see, kept in one place.
03Estimating
Five steps. AI drafts each one, you check it.
Drop in the spec book and the drawings. Chantro drafts the scope of work and shows the page each item came from wherever the documents give one.
It reads the schedules and labels on every sheet, with the sheet and a confidence for each quantity, and you choose what goes into the bill of materials.
Prices are checked against your own past estimates where they hold at least three prices for an item. Paste a sub's quote, it's parsed, and you level the bids side by side.
A draft schedule appears as a Gantt chart. Compress it or move it and the dates hold together.
A bid check looks for gaps before it goes out. Export a clean bid PDF with your company name, assumptions and exclusions spelled out.

04AI you can check
Chantro's AI reads, drafts and suggests. You stay in charge.
How Chantro uses AIScope items carry the spec page they came from (SOW p.14) wherever the documents give one, and drawing quantities name their sheet.
Deleting a task, project or calendar event, changes to people and app access, and edits to an estimate wait for your yes.
Price suggestions come from your own company's past estimates and stay inside your workspace.
05Time and labor
The crew clocks in, an approver checks the day, and approved hours become labor cost on the job and a file for payroll.
06For every role
What each role opens Chantro for. What a person can see follows their position on the org chart.
See every job, bid and hour.
Bid more work in less time.
Run the job from one place.
Less typing, more building.
Payroll without the paper chase.
Each company's data is kept apart in the database itself, not only in the app.
Six roles to start, with permissions you can set for every position.
Authenticator-app codes and control over every signed-in device.
See who changed what, and when.
Something else on your mind? Talk to us.
General and specialty contractors of every size who want estimating, projects, field reports and time in one system instead of spreadsheets and a handful of apps.
No. Start with what hurts most, usually estimating or timesheets, and add the rest as you go. You can add employees without giving them a login.
Spec books and other documents as PDF, drawings as PDF, DXF or images, sub quotes pasted in, and photos of paper timesheets, which draft a form for you to check. For AutoCAD .dwg files, export to PDF or DXF first.
No AI is. That is why Chantro shows its sources where it has them and asks before the big things. It drafts and does the routine work; you check it.
Yes. Every feature is in the web app, which opens in any phone browser. The field screens are built for phone width; wide ones, like the org chart and the schedule, are best at a desk. The native phone app is new and covers tasks, the calendar, the assistant and the Time tab. Ask us about getting it on your crew's phones.
No. Approved hours, with overtime and pay periods worked out, export to your payroll as a CSV.
Plans start at $149 a month with AI credits included. AI features use those credits; manual work never spends them, and you can see your usage at any time. See the plans or talk to us about your company.
Bring a spec book or a drawing set and we will walk you through what Chantro does with it.
Estimates, leads, projects, daily reports, timesheets and your team, on one shared record.