01 / MEASURE
Turn drawings into quantities.
Calibrate against a known distance, then create linear, area, and count takeoffs. Save an editable project and export quantities or marked-up PDFs.
Construction takeoff · Maintenance of traffic
Takeoff plus traffic control on your Mac.
Measure quantities and draft maintenance-of-traffic (MOT) layouts in one Mac workspace, starting with your PDF plans.
Available now on the Mac App Store. Requires macOS 14 or newer.
One set of tools.
Construction takeoff and maintenance-of-traffic (MOT) plan drafting for Mac.
02 / DRAFT
Build out the traffic plan.
Place MOT and temporary traffic-control symbols (signs, cones, drums, barricades, arrow boards, pedestrian control), notes, and hatched work areas alongside your plans. Review each layout against the requirements of your project and reviewing authority.
Built for Mac
Centerline is a Mac app for construction takeoff and maintenance-of-traffic plan drafting.
Construction takeoff
Turn drawings into quantities with linear, area, and count takeoffs.
Maintenance of traffic
Use the MOT / TTC Library to place traffic-control symbols and add notes or work areas.
Your plans stay local
Centerline does not automatically upload your plans. You choose which files to open, save, export, or share.
Pricing
One set of tools. Two billing options. Free download.
$9.99 / month
Both plans include the same takeoff and MOT tools.
$79.99 / year
Billed upfront annually.
An active subscription is required to use the editor. U.S. App Store pricing; Apple displays the final price at purchase. Subscriptions renew automatically unless canceled through your Apple Account. Optional AI requires your own API account; cloud hosting is separate.
Common questions
What are the system requirements?
macOS 14.0 or later. Available on the Mac App Store.
How do I restore or cancel a subscription?
Use Centerline > Subscription to restore purchases or manage your plan. Restore using the same Apple Account that made the purchase. Apple handles billing and cancellation; you can also manage or cancel through your Apple Account settings.
How do I keep my work editable?
Save a Centerline project as well as any exported PDFs or reports. Canceling a subscription does not delete your local projects.
Are AI and cloud services included?
AI suggestions require your own Perplexity API credential and may incur separate charges. Cloud publishing requires a compatible server; hosted cloud service is separate.
Does Centerline certify my MOT layout?
Centerline is a drafting and measurement tool. Verify scales and quantities before use. MOT layouts and symbols require review against the applicable project and agency requirements; Centerline does not certify compliance or provide an engineering seal.