thiran open on a laptop at a construction site at sunset
0.00 m
Run length · 9.88 m
Added to the Register
Supply diffusers × 48
Found with Find Similar
What changed
Rev B → Rev C · 9 changes
Live Markup
3 people in this session
thiran
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Mark up. Measure.
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For everyone on the project

Everyone who marks up a drawing.

Site team reviewing a drawing in thiran
Consultant marking up a drawing in thiran
Engineer marking up a mechanical drawing in thiran on a tablet on site
What changed
Rev B → Rev C · 9 changes
Supply diffusers × 48
Added to takeoff
Photo pinned
Grid C4 · facing north-east
See it work

Pick a job. See how easy it is.

thiran with a drawing open
1

Less repetition. More progress.

It reads the drawings. You just check and keep.

What changed

Every change listed as Changed, Added or Removed. Keep it or dismiss it.

Automatic legends

A key of the symbols on the sheet.

LEGEND · M-201
Supply diffuser
Revision cloud
Supply duct

Approval stamps

Consultants approve, approve as noted or reject, then sign. Right on the drawing.

Harbourview MechanicalApprovedApproved as notedRevise and resubmitRejectedM. Okafor, Lead mechanical engineer24/10/2026 · P-1024 Harbourview Offices

Markup layers

Add a layer from the Layers panel beside the drawing to group markups by trade or reviewer, then hide or lock it.

The Layers panel beside a drawing

The scale, set for you

Read from the view titles when you open a drawing. Change it any time, give a snapshot its own scale, and keep it on layers.

Live Markup

Mark up together, live.

Share a drawing or your screen, talk and chat, and bring in anyone from inside or outside the company in one click. Every session’s markups and conversation are kept to go back to.

Share drawingsShare screenTalk and chatInvite anyoneSession history
A Live Markup session in thiran
M. Okafor · has the pen
S. Patel · on site
A. Nguyen · consultant
Sharing screen · R. Chen
+ Invite · link copied for an outside consultant
S. PatelCan we confirm access before the pour?
M. OkaforYes, note added on A-0510.
A. NguyenLooks good from our side.
Session saved · markups and chat kept to go back to
The complete toolkit

Every tool, right where you need it.

Save your own defaultsTool LibrarySnap to drawingKeyboard shortcuts
Your drives

Open and save where your files live.

Google DriveGoogle DriveOpen and save back
OneDriveOneDriveOpen and save back
Document tools

Every PDF job, built in.

Security

Your files, your device.

Files stay on your device
“Was this you?” sign-in alerts
Lockout after failed sign-ins
Pricing

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Choose annual or monthly, set your number of devices and see your price. The more devices, the bigger the discount.

Prices in USD, GST included for Australian customers. See the Terms of Use.

Saving 17% · US$39.80 a year
Number of devices
1
Volume discount7%Saving vs monthlyUS$0.00 / yearPrice per deviceUS$185.07 / year
TotalUS$2,220.84 per year
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On site

Mark up on site, as easy as pen on paper.

thiran on a tablet with a basement plan open
Construction supervisorPencil draws, a finger pans.
ConsultantPhoto pins from the phone camera.
EngineerTouch buttons to finish a measurement.
ArchitectPinch to zoom. Big sheets stay sharp.
FAQs

Good questions.

Questions
Answer

Open a drawing. Watch it measure.

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